Federal Capture Intelligence

Top EPA environmental consulting contractors (NAICS 541620)

Contract actions: October 1, 2021 – October 4, 2026 Updated October 5, 2026 Environmental Protection Agency agency guide NAICS 541620 · Environmental Consulting Services
Latest 12 months
$267.9M
Net obligations · Down $83.5M vs. $351.4M preceding
Prime contractors
61
With positive obligations in the latest 12 months

Research the EPA federal contracting market for environmental consulting under NAICS 541620. Compare top federal contractors and market share, reported contract obligations and spending trends, funding-office attribution, recent award activity, contract types, competition, and procurement methods, and potential recompete research leads.

Contract obligation trends for EPA environmental consulting

Federal records show $1.8B in net obligations across 3,436 awards in EPA environmental consulting from Oct 1, 2021 through Oct 4, 2026. This market accounts for 16.3% of $11.0B in agency-wide net prime contract obligations over the period shown. Latest 12-month net obligations decreased 23.8% from $351.4M to $267.9M. 14 prime contractors accounted for at least 80% of positive obligations in that latest period.

Fiscal-year activity

FY27 is year-to-date through Oct 4, 2026; earlier years show complete fiscal-year totals.

FY27 year-to-date: $0 versus −$403K through the same date in FY26 (Not comparable).
Net obligations · complete fiscal yearNet obligations · FY27 YTDContract actions
View fiscal-year data table
Fiscal yearNet obligationsContract actionsCoverage
FY2022$300.6M3,282Complete
FY2023$366.2M3,609Complete
FY2024$506.0M3,764Complete
FY2025$352.6M3,692Complete
FY2026$267.5M2,582Complete

Market at a glance

All reported prime contract awards
All-period net obligations
$1.8B
3,436 awards · 173 prime contractors
Latest 12-month movement
−23.8%
$267.9M vs. $351.4M
Leading eight prime share
64.3%
Share held by the eight leading prime contractors in the latest 12 months
View agency share, denominators, and set-aside reporting
Agency context
16.3% of $11.0B in agency-wide net obligations.
Set-aside share when reported
39.5% of 258 awards with reported set-aside status.
Set-aside reporting
102 set aside · 156 no set-aside · 3,178 not reported

What changed in the last 12 months?

Oct 5, 2025–Oct 4, 2026, compared with Oct 5, 2024–Oct 4, 2025.

Competitive shifts

WESTON SOLUTIONS INC lost the most market share
24.1%→0.2%−23.9 percentage points
The contractor now ranks #39 by positive obligations, based on 239 reported actions.
TOEROEK ASSOCIATES, INC. climbed the most in the contractor rankings
#32→#6Up 26 places
The contractor accounts for 4.8% of positive obligations across 136 reported actions.

Buyer demand

Reported obligations through OFFICE FOR WATER (OW) (FUNDING) increased
$63.5M→$121.6M+$58.0M
Latest-period activity spans 238 awards across 14 prime contractors.
Reported obligations through OFC FOR AIR RAD (OAR) (FUNDING) decreased
$58.0M→$16.9M−$41.1M
Latest-period activity spans 186 awards across 17 prime contractors.

Award activity

WESTON SOLUTIONS INC recorded the largest deobligation action
−$36.1MJul 15, 2026 action
Reported under PIID 68HE0925F0018 by REGION 9 (FUNDING OFFICE). Award net obligations after the action: $13.9M.
View supporting award
View 3 additional material changes

Market structure

Top-five contractor share decreased
58.8%→51.8%−7.0 percentage points
Contractors outside the top five now account for 48.2% of positive obligations.

Competitive shifts

RESEARCH TRIANGLE INSTITUTE recorded the largest net deobligation
$5.7M→−$2.9M−$8.5M
The contractor now is unranked by positive obligations, based on 12 reported actions.
4 contractors were first observed in this market during the latest 12 months
$3.0MLatest 12-month obligations
Contractor-level obligations and first-observed dates appear below. “First observed” applies only to this market and the period shown.
View 4 contractors
ContractorLatest 12 months
How these findings are calculated

Findings are selected from matched-period changes in obligations, share, rank, funding offices, concentration, reported set-asides, material award actions, and agency-peer outliers. Related signals are combined, and only material evidence-backed changes are shown. Review the full methodology.

Federal contract obligations by funding office

See how positive obligations were attributed across funding offices in the 12 months ending Oct 4, 2026.

44.7% of positive obligations were attributed to OFFICE FOR WATER (OW) (FUNDING). That represents $121.6M, up $58.0M from the preceding 12 months.

Latest 12-month share of positive obligations; the gray segment represents all other reported offices.

  1. OFFICE FOR WATER (OW) (FUNDING)44.7% · $121.6M · up $58.0M
  2. OFC LANDEMERG MGMT (OLEM)(FUNDING)13.5% · $36.6M · up $6.1M
  3. OFC FOR AIR RAD (OAR) (FUNDING)6.2% · $16.9M · down $41.1M
  4. OFC CHEMSFTYPOLLPREV(OCSPP) (FUND)6.1% · $16.7M · up $11.1M
  5. REGION 10 (FUNDING OFFICE)4.0% · $10.9M · up $1.9M
  6. All other reported offices25.4% of positive obligations
View reported office rankings, comparisons, and evidence

USAspending assigns each award to a funding office. That office may differ from the requiring activity, program office, contracting office, individual buyer, or actual customer.

  1. Reported funding office

    OFFICE FOR WATER (OW) (FUNDING)

    #1Up 1 from #2

    Latest 12 months

    $121.6M

    44.7% of positive obligations

    Versus preceding 12 months

    +$58.0M

    14 active prime contractors · 238 awards

    View office comparison and evidence

    Reported obligations increased 91.4% from $63.5M to $121.6M. The office’s share of positive obligations moved from 18.1% to 44.7%, a change of +26.6 percentage points.

    The latest period contains 463 actions across 238 awards and 2 newly active prime contractors. The preceding period contained 16 active prime contractors and 291 awards.

    Leading award-level changes

  2. Reported funding office

    OFC LANDEMERG MGMT (OLEM)(FUNDING)

    #2Up 2 from #4

    Latest 12 months

    $36.6M

    13.5% of positive obligations

    Versus preceding 12 months

    +$6.1M

    19 active prime contractors · 165 awards

    View office comparison and evidence

    Reported obligations increased 19.8% from $30.6M to $36.6M. The office’s share of positive obligations moved from 8.7% to 13.5%, a change of +4.8 percentage points.

    The latest period contains 284 actions across 165 awards and 2 newly active prime contractors. The preceding period contained 22 active prime contractors and 210 awards.

  3. Reported funding office

    OFC FOR AIR RAD (OAR) (FUNDING)

    #3Rank unchanged

    Latest 12 months

    $16.9M

    6.2% of positive obligations

    Versus preceding 12 months

    −$41.1M

    17 active prime contractors · 186 awards

    View office comparison and evidence

    Reported obligations decreased 70.8% from $58.0M to $16.9M. The office’s share of positive obligations moved from 16.5% to 6.2%, a change of −10.3 percentage points.

    The latest period contains 344 actions across 186 awards and 3 newly active prime contractors. The preceding period contained 15 active prime contractors and 210 awards.

  4. Reported funding office

    OFC CHEMSFTYPOLLPREV(OCSPP) (FUND)

    #4Up 9 from #13

    Latest 12 months

    $16.7M

    6.1% of positive obligations

    Versus preceding 12 months

    +$11.1M

    13 active prime contractors · 56 awards

    View office comparison and evidence

    Reported obligations increased 199.3% from $5.6M to $16.7M. The office’s share of positive obligations moved from 1.6% to 6.1%, a change of +4.5 percentage points.

    The latest period contains 192 actions across 56 awards and 5 newly active prime contractors. The preceding period contained 10 active prime contractors and 74 awards.

  5. Reported funding office

    REGION 10 (FUNDING OFFICE)

    #5Up 5 from #10

    Latest 12 months

    $10.9M

    4.0% of positive obligations

    Versus preceding 12 months

    +$1.9M

    9 active prime contractors · 82 awards

    View office comparison and evidence

    Reported obligations increased 21.7% from $9.0M to $10.9M. The office’s share of positive obligations moved from 2.6% to 4.0%, a change of +1.5 percentage points.

    The latest period contains 107 actions across 82 awards and 2 newly active prime contractors. The preceding period contained 10 active prime contractors and 84 awards.

  6. Reported funding office

    REGION 2 (FUNDING OFFICE)

    #6Up 3 from #9

    Latest 12 months

    $9.6M

    3.5% of positive obligations

    Versus preceding 12 months

    +$546K

    9 active prime contractors · 24 awards

    View office comparison and evidence

    Reported obligations increased 6.0% from $9.1M to $9.6M. The office’s share of positive obligations moved from 2.6% to 3.5%, a change of +1.0 percentage points.

    The latest period contains 42 actions across 24 awards and 3 newly active prime contractors. The preceding period contained 7 active prime contractors and 18 awards.

  7. Reported funding office

    REGION 6 (FUNDING OFFICE)

    #7Down 2 from #5

    Latest 12 months

    $9.1M

    3.3% of positive obligations

    Versus preceding 12 months

    −$8.2M

    7 active prime contractors · 16 awards

    View office comparison and evidence

    Reported obligations decreased 47.5% from $17.2M to $9.1M. The office’s share of positive obligations moved from 4.9% to 3.3%, a change of −1.6 percentage points.

    The latest period contains 26 actions across 16 awards and 1 newly active prime contractor. The preceding period contained 9 active prime contractors and 21 awards.

  8. Reported funding office

    REGION 5 (FUNDING OFFICE)

    #8Down 2 from #6

    Latest 12 months

    $8.8M

    3.2% of positive obligations

    Versus preceding 12 months

    −$3.6M

    17 active prime contractors · 96 awards

    View office comparison and evidence

    Reported obligations decreased 29.2% from $12.4M to $8.8M. The office’s share of positive obligations moved from 3.5% to 3.2%, a change of −0.3 percentage points.

    The latest period contains 192 actions across 96 awards and 3 newly active prime contractors. The preceding period contained 17 active prime contractors and 119 awards.

  9. Reported funding office

    REGION 8 (FUNDING OFFICE)

    #9Up 2 from #11

    Latest 12 months

    $7.4M

    2.7% of positive obligations

    Versus preceding 12 months

    −$816K

    11 active prime contractors · 31 awards

    View office comparison and evidence

    Reported obligations decreased 9.9% from $8.2M to $7.4M. The office’s share of positive obligations moved from 2.3% to 2.7%, a change of +0.4 percentage points.

    The latest period contains 48 actions across 31 awards and 3 newly active prime contractors. The preceding period contained 10 active prime contractors and 45 awards.

  10. Reported funding office

    REGION 4 (FUNDING OFFICE)

    #10Up 4 from #14

    Latest 12 months

    $7.3M

    2.7% of positive obligations

    Versus preceding 12 months

    +$2.0M

    12 active prime contractors · 46 awards

    View office comparison and evidence

    Reported obligations increased 37.0% from $5.4M to $7.3M. The office’s share of positive obligations moved from 1.5% to 2.7%, a change of +1.2 percentage points.

    The latest period contains 56 actions across 46 awards and 3 newly active prime contractors. The preceding period contained 16 active prime contractors and 72 awards.

  11. Reported funding office

    OFC ENFCOMPL ASSU (OECA) (FUNDING)

    #11Down 4 from #7

    Latest 12 months

    $5.8M

    2.1% of positive obligations

    Versus preceding 12 months

    −$6.4M

    6 active prime contractors · 30 awards

    View office comparison and evidence

    Reported obligations decreased 52.3% from $12.2M to $5.8M. The office’s share of positive obligations moved from 3.5% to 2.1%, a change of −1.3 percentage points.

    The latest period contains 72 actions across 30 awards and 1 newly active prime contractor. The preceding period contained 7 active prime contractors and 54 awards.

  12. Reported funding office

    REGION 7 (FUNDING OFFICE)

    #12Down 4 from #8

    Latest 12 months

    $5.4M

    2.0% of positive obligations

    Versus preceding 12 months

    −$5.5M

    8 active prime contractors · 153 awards

    View office comparison and evidence

    Reported obligations decreased 50.4% from $10.9M to $5.4M. The office’s share of positive obligations moved from 3.1% to 2.0%, a change of −1.1 percentage points.

    The latest period contains 180 actions across 153 awards and 3 newly active prime contractors. The preceding period contained 7 active prime contractors and 164 awards.

  13. Reported funding office

    OFC OF FINANCE & ADMIN (OFA)(FUNDING)

    #15New to the positive-obligation ranking

    Latest 12 months

    $2.9M

    1.1% of positive obligations

    Versus preceding 12 months

    +$2.9M

    7 active prime contractors · 12 awards

    View office comparison and evidence

    Reported obligations rose from $0 to $2.9M. The office’s share of positive obligations moved from 0% to 1.1%, a change of +1.1 percentage points.

    The latest period contains 39 actions across 12 awards and 7 newly active prime contractors. The preceding period contained 0 active prime contractors and 0 awards.

  14. Reported funding office

    REGION 9 (FUNDING OFFICE)

    No positive-obligation rank

    Latest 12 months

    −$3.9M

    0% of positive obligations

    Versus preceding 12 months

    −$91.5M

    21 active prime contractors · 181 awards

    View office comparison and evidence

    Reported obligations moved from $87.6M in net obligations to $3.9M in net deobligations. The office’s share of positive obligations moved from 24.9% to 0%, a change of −24.9 percentage points.

    The latest period contains 287 actions across 181 awards and 5 newly active prime contractors. The preceding period contained 31 active prime contractors and 187 awards.

    Leading award-level changes

Contract types, competition, and procurement methods

From Oct 5, 2025 through Oct 4, 2026, 616 awards had positive obligations totaling $368.9M. Np was the leading reported procedure, accounting for 46.0% of positive obligations. Awards with a reported parent IDV accounted for 99.3%.

Leading award type
74.5%
Delivery Order
Leading reported procedure
46.0%
Np
Reported parent IDV
99.3%
of positive obligations had a reported parent IDV
Median reported offers
1
144 of 616 awards reported offers · Limited reporting

Buying method changes

Compared with Oct 5, 2024–Oct 4, 2025. Based on 616 current awards and 837 preceding awards with positive net obligations.

Reported full-and-open obligation share
32.8%
Down from 92.3% in the preceding period
How to read these changes

Directional color and the Up or Down labels show historical movement only. Green does not mean favorable and red does not mean unfavorable; neither predicts a future procurement method.

Same-NAICS comparison

Compared with the NAICS 541620 peer median, parent-IDV obligation share is 20.9 percentage points higher, reported full-and-open obligation share is 2.9 percentage points higher, delivery-order obligation share is 12.0 percentage points higher, and median positive award obligations are 40.8% higher.

MeasureThis marketPeer medianDifference
Parent-IDV obligation share99.3%78.3%+20.9 pts
Reported full-and-open obligation share32.8%29.8%+2.9 pts
Delivery-order obligation share74.5%62.5%+12.0 pts
Median positive award obligations$181K$129K+40.8%
Peer cohort and comparison limits

The peer median gives each of the 12 eligible agency markets equal weight. The included agency markets are:

Agency mission, scale, and acquisition context can differ. Peer position does not establish market attractiveness or predict a future procurement method.

View buying-method details and data coverage

Award types

Reported valueAwardsPositive obligationsShare
Delivery Order(C)444$274.9M74.5%
BPA Call(A)156$91.3M24.7%
Definitive Contract(D)9$2.2M0.61%
Purchase Order(B)7$481K0.13%

Reported parent-award types

Reported valueAwardsPositive obligationsShare
IDC(B)426$266.8M72.3%
BPA(E)156$91.3M24.7%
FSS(C)18$8.1M2.2%
Not reported16$2.7M0.74%

Single- or multiple-award parent structure

Reported valueAwardsPositive obligationsShare
Single Award(S)475$311.1M84.3%
Multiple Award(M)125$55.1M14.9%
Not reported16$2.7M0.74%

Solicitation procedures

Reported valueAwardsPositive obligationsShare
Np(NEGOTIATED PROPOSAL/QUOTE)123$169.6M46.0%
Subject to Multiple Award Fair Opportunity(MAFO)157$78.5M21.3%
Negotiated Proposal/Quote(NP)209$57.5M15.6%
Mafo(SUBJECT TO MULTIPLE AWARD FAIR OPPORTUNITY)94$50.8M13.8%
Only One Source(SSS)18$9.4M2.6%
Sss(ONLY ONE SOURCE)7$2.1M0.57%
Other reported values8$995K0.27%

Extent competed

Reported valueAwardsPositive obligationsShare
A(FULL AND OPEN COMPETITION)179$192.4M52.1%
Full and Open Competition(A)313$120.8M32.8%
D(FULL AND OPEN COMPETITION AFTER EXCLUSION OF SOURCES)38$28.0M7.6%
Full and Open Competition After Exclusion of Sources(D)53$15.2M4.1%
Not Available for Competition(B)10$6.4M1.7%
Not Competed(C)8$3.0M0.82%
Other reported values15$3.1M0.84%

Fair-opportunity and limited-source reporting

Reported valueAwardsPositive obligationsShare
Fair Opportunity Given(FAIR)203$118.3M32.1%
Competitive Set Aside(CSA)14$6.9M1.9%
Follow-on Action Following Competitive Initial Action(FOO)25$2.5M0.68%
Other Statutory Authority(OSA)3$704K0.19%
Only One Source - Other(ONE)5$652K0.18%
Minimum Guarantee(MG)1$312K0.080%
Not reported365$239.6M64.9%

Other-than-full-and-open reasons

Reported valueAwardsPositive obligationsShare
Authorized by Statute (FAR 6.302-5(A)(2)(I))(OTH)16$8.5M2.3%
Only One Source-Other (FAR 6.302-1 Other)(ONE)9$3.1M0.83%
Urgency (FAR 6.302-2)(URG)1$161K0.040%
SAP Non-Competition (FAR 13)(SP2)2$41K0.010%
Not reported588$357.1M96.8%

Contract pricing types

Reported valueAwardsPositive obligationsShare
U(COST PLUS FIXED FEE)32$87.4M23.7%
Y(TIME AND MATERIALS)119$77.0M20.9%
Time and Materials(Y)210$77.0M20.9%
J(FIRM FIXED PRICE)62$45.9M12.4%
Firm Fixed Price(J)79$33.9M9.2%
Cost Plus Fixed Fee(U)68$28.5M7.7%
Other reported values46$19.3M5.2%

Product or Service Codes

Reported valueAwardsPositive obligationsShare
Support- Professional: Other(R499)113$125.3M34.0%
Support- Professional: Emergency Response/Disaster Planning/Preparedness Support(R429)135$57.8M15.7%
Other Environmental Services(F999)117$50.0M13.6%
Environmental Systems Protection- Environmental Consulting and Legal Support(F115)51$47.5M12.9%
Support- Professional: Engineering/Technical(R425)54$25.9M7.0%
Special Studies/Analysis- Environmental Assessments(B510)34$25.4M6.9%
Other reported values112$36.9M10.0%

Awarding subagencies

Reported valueAwardsPositive obligationsShare
Environmental Protection Agency(6800)615$365.0M98.9%
Department of the Army(2100)1$4.0M1.1%

Awarding offices

Reported valueAwardsPositive obligationsShare
Water, Tribal & Science Division(68HERW)161$137.0M37.1%
Land, Enforcement, and Air Division(68HERL)150$98.3M26.6%
Region 9 Contracting Office(68HE09)77$35.9M9.7%
Region 7 Contracting Office(68HE07)86$22.2M6.0%
Region 5 Contracting Office(68HE05)42$16.1M4.4%
Region 6 Contracting Office(68HE06)9$15.5M4.2%
Other reported values91$44.0M11.9%

Reported parent IDVs

Reported valueAwardsPositive obligationsShare
68HERC23D0008(6800)12$43.7M11.8%
68HERC23D0011(6800)25$29.3M7.9%
68HERH22A0029(6800)7$25.8M7.0%
68HERH22A0020(6800)11$19.6M5.3%
68HE0923D0002(6800)15$16.5M4.5%
68HERC23D0001(6800)15$15.7M4.3%
68HE0P24A0005(6800)16$11.9M3.2%
68HE0720D0005(6800)24$10.8M2.9%
Other reported values475$192.9M52.3%
Not reported16$2.7M0.74%

Offers, award size, and timing

Median reported offers
1 median
144 reported · 472 not reported · Limited reporting
Positive award obligations
$181K median
$70K–$451K middle 50%
Reported performance period
729 days (~24 months) median
616 reported · 0 not reported

Calculations group latest-period actions by award, retain awards with positive net obligations for share denominators, and use each award's latest reported USAspending procurement fields as of Oct 4, 2026. Blank competition, pricing, PSC, or parent-IDV values remain not reported; they are not inferred. Offer counts must be positive and below the FPDS 999 placeholder. Awarding organizations can differ from the funding agency that defines this page.

Top federal contractors

Latest 12-month market share, concentration, and complete prime contractor rankings across the period shown.

Prime contractor concentration
14 of 61prime contractors account for at least 80% of positive obligations in the last 12 months
Largest prime contractor
17.1%of positive obligations in the last 12 months
Leading four prime contractors
45.8%of positive obligations in the last 12 months
Leading eight prime contractors
64.3%of positive obligations in the last 12 months

Based on $274.4M in positive obligations during the 12 months ending Oct 4, 2026. Individual shares and movement appear in the searchable rankings below. Movement compares with Oct 5, 2024–Oct 4, 2025.

Last 12mo obligation volume: Highest positive obligations first; net deobligations follow by magnitude; contractors with no activity in the last 12 months follow by all-period obligations. Ranks use the complete contractor list and remain fixed when search narrows the results.

15 leading contractors
  1. #1

    Last 12mo obligations

    $46.9M

    17.1%

    Dollar movement

    +$33.0M

    vs. prior 12 months

    Last 12mo awards

    28 awards

    76 actions

    Historical and award details for GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC.
    Obligations: prior → latest
    $13.9M → $46.9M
    +237.3%
    Share: prior → latest
    3.9% → 17.1%
    +13.2 percentage points
    All-period obligations
    $113.0M
    6.3% of all-period positive obligations · 86 awards
    Recorded activity
    Since Dec 2, 2021
    through Sep 24, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported2847
    Reported small business00
    All-period set-aside types

    None reported.

  2. #2

    Last 12mo obligations

    $37.2M

    13.6%

    Dollar movement

    −$18.7M

    vs. prior 12 months

    Last 12mo awards

    206 awards

    504 actions

    Historical and award details for EASTERN RESEARCH GROUP INC
    Obligations: prior → latest
    $55.9M → $37.2M
    −33.4%
    Share: prior → latest
    15.9% → 13.6%
    −2.3 percentage points
    All-period obligations
    $301.4M
    16.8% of all-period positive obligations · 425 awards
    Recorded activity
    Since Oct 4, 2021
    through Sep 29, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside2119
    Not reported185207
    Reported small business12
    All-period set-aside types

    None reported.

  3. #3

    Last 12mo obligations

    $24.2M

    8.8%

    Dollar movement

    −$6.9M

    vs. prior 12 months

    Last 12mo awards

    33 awards

    81 actions

    Historical and award details for S C & A INC
    Obligations: prior → latest
    $31.1M → $24.2M
    −22.1%
    Share: prior → latest
    8.8% → 8.8%
    0.0 percentage points
    All-period obligations
    $97.9M
    5.5% of all-period positive obligations · 62 awards
    Recorded activity
    Since Oct 1, 2021
    through Sep 14, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside21
    Reported no set-aside00
    Not reported3140
    Reported small business3341
    All-period set-aside types
    • 3 · Total small business
  4. #4

    Last 12mo obligations

    $17.2M

    6.3%

    Dollar movement

    +$7.1M

    vs. prior 12 months

    Last 12mo awards

    72 awards

    105 actions

    Historical and award details for THE CADMUS GROUP LLC
    Obligations: prior → latest
    $10.2M → $17.2M
    +69.4%
    Share: prior → latest
    2.9% → 6.3%
    +3.4 percentage points
    All-period obligations
    $77.6M
    4.3% of all-period positive obligations · 93 awards
    Recorded activity
    Since Feb 15, 2022
    through Sep 21, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported7263
    Reported small business00
    All-period set-aside types

    None reported.

  5. #5

    Last 12mo obligations

    $16.5M

    6.0%

    Dollar movement

    −$5.0M

    vs. prior 12 months

    Last 12mo awards

    29 awards

    49 actions

    Historical and award details for TETRA TECH, INC.
    Obligations: prior → latest
    $21.5M → $16.5M
    −23.1%
    Share: prior → latest
    6.1% → 6.0%
    −0.1 percentage points
    All-period obligations
    $87.0M
    4.8% of all-period positive obligations · 56 awards
    Recorded activity
    Since Dec 1, 2021
    through Sep 29, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported2928
    Reported small business00
    All-period set-aside types

    None reported.

  6. #6

    Last 12mo obligations

    $13.2M

    4.8%

    Dollar movement

    +$12.0M

    vs. prior 12 months

    Last 12mo awards

    112 awards

    136 actions

    Historical and award details for TOEROEK ASSOCIATES, INC.
    Obligations: prior → latest
    $1.2M → $13.2M
    +987.5%
    Share: prior → latest
    0.35% → 4.8%
    +4.5 percentage points
    All-period obligations
    $37.1M
    2.1% of all-period positive obligations · 286 awards
    Recorded activity
    Since Oct 6, 2021
    through Sep 29, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside44
    Reported no set-aside11
    Not reported10798
    Reported small business112103
    All-period set-aside types
    • 9 · Total small business
  7. #7

    Last 12mo obligations

    $11.5M

    4.2%

    Dollar movement

    +$7.0M

    vs. prior 12 months

    Last 12mo awards

    28 awards

    63 actions

    Historical and award details for ENVIRONMENTAL MANAGEMENT SUPPORT, INC
    Obligations: prior → latest
    $4.5M → $11.5M
    +156.8%
    Share: prior → latest
    1.3% → 4.2%
    +2.9 percentage points
    All-period obligations
    $26.6M
    1.5% of all-period positive obligations · 63 awards
    Recorded activity
    Since Oct 20, 2021
    through Sep 29, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside11
    Reported no set-aside00
    Not reported2731
    Reported small business2832
    All-period set-aside types
    • 2 · Total small business
  8. #8

    Last 12mo obligations

    $9.4M

    3.4%

    Dollar movement

    −$1.4M

    vs. prior 12 months

    Last 12mo awards

    50 awards

    67 actions

    Historical and award details for WESTON-TECHLAW JV LLC
    Obligations: prior → latest
    $10.8M → $9.4M
    −13.3%
    Share: prior → latest
    3.1% → 3.4%
    +0.3 percentage points
    All-period obligations
    $55.6M
    3.1% of all-period positive obligations · 95 awards
    Recorded activity
    Since Aug 10, 2022
    through Sep 24, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported5065
    Reported small business5065
    All-period set-aside types

    None reported.

  9. #9

    Last 12mo obligations

    $9.4M

    3.4%

    Dollar movement

    +$3.6M

    vs. prior 12 months

    Last 12mo awards

    25 awards

    64 actions

    Historical and award details for TETRA TECH, INC.
    Obligations: prior → latest
    $5.8M → $9.4M
    +63.1%
    Share: prior → latest
    1.6% → 3.4%
    +1.8 percentage points
    All-period obligations
    $34.7M
    1.9% of all-period positive obligations · 51 awards
    Recorded activity
    Since Oct 5, 2021
    through Sep 29, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported2526
    Reported small business00
    All-period set-aside types

    None reported.

  10. #10

    Last 12mo obligations

    $8.6M

    3.1%

    Dollar movement

    +$3.8M

    vs. prior 12 months

    Last 12mo awards

    39 awards

    56 actions

    Historical and award details for TETRA TECH, INC.
    Obligations: prior → latest
    $4.8M → $8.6M
    +80.0%
    Share: prior → latest
    1.4% → 3.1%
    +1.8 percentage points
    All-period obligations
    $47.8M
    2.7% of all-period positive obligations · 74 awards
    Recorded activity
    Since Oct 6, 2021
    through Sep 2, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported3947
    Reported small business00
    All-period set-aside types

    None reported.

  11. #11

    Last 12mo obligations

    $8.6M

    3.1%

    Dollar movement

    +$8.7M

    vs. prior 12 months

    Last 12mo awards

    10 awards

    35 actions

    Historical and award details for PB&A/CSS JV, LLC.
    Obligations: prior → latest
    −$48K → $8.6M
    Not comparable
    Share: prior → latest
    0% → 3.1%
    +3.1 percentage points
    All-period obligations
    $23.0M
    1.3% of all-period positive obligations · 11 awards
    Recorded activity
    Since Jul 28, 2022
    through Sep 9, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported1011
    Reported small business1011
    All-period set-aside types

    None reported.

  12. #12

    Last 12mo obligations

    $8.6M

    3.1%

    Dollar movement

    +$3.9M

    vs. prior 12 months

    Last 12mo awards

    33 awards

    48 actions

    Historical and award details for GREAT LAKES ENVIRONMENTAL CENTER, INC
    Obligations: prior → latest
    $4.7M → $8.6M
    +81.6%
    Share: prior → latest
    1.3% → 3.1%
    +1.8 percentage points
    All-period obligations
    $40.0M
    2.2% of all-period positive obligations · 86 awards
    Recorded activity
    Since Oct 5, 2021
    through Sep 25, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside63
    Reported no set-aside00
    Not reported2731
    Reported small business2519
    All-period set-aside types
    • 7 · Total small business
  13. #13

    Last 12mo obligations

    $6.6M

    2.4%

    Dollar movement

    +$3.1M

    vs. prior 12 months

    Last 12mo awards

    12 awards

    61 actions

    Historical and award details for SRC INC
    Obligations: prior → latest
    $3.5M → $6.6M
    +89.9%
    Share: prior → latest
    0.99% → 2.4%
    +1.4 percentage points
    All-period obligations
    $34.1M
    1.9% of all-period positive obligations · 34 awards
    Recorded activity
    Since Oct 20, 2021
    through Sep 17, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported1226
    Reported small business00
    All-period set-aside types

    None reported.

  14. #14

    Last 12mo obligations

    $6.0M

    2.2%

    Dollar movement

    −$7.5M

    vs. prior 12 months

    Last 12mo awards

    29 awards

    105 actions

    Historical and award details for TETRA TECH, INC.
    Obligations: prior → latest
    $13.5M → $6.0M
    −55.6%
    Share: prior → latest
    3.8% → 2.2%
    −1.6 percentage points
    All-period obligations
    $111.0M
    6.2% of all-period positive obligations · 79 awards
    Recorded activity
    Since Oct 8, 2021
    through Sep 28, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported2957
    Reported small business00
    All-period set-aside types

    None reported.

  15. #15

    Last 12mo obligations

    $5.6M

    2.0%

    Dollar movement

    −$328K

    vs. prior 12 months

    Last 12mo awards

    10 awards

    14 actions

    Historical and award details for TETRA TECH INC
    Obligations: prior → latest
    $5.9M → $5.6M
    −5.5%
    Share: prior → latest
    1.7% → 2.0%
    +0.4 percentage points
    All-period obligations
    $30.9M
    1.7% of all-period positive obligations · 26 awards
    Recorded activity
    Since Oct 8, 2021
    through Sep 17, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported1016
    Reported small business00
    All-period set-aside types

    None reported.

Potential federal contract recompetes

Investigate potential recompetes surfaced by near-term end dates, award value, and recent contract changes.

EASTERN RESEARCH GROUP INC

F999-CLOSING AMERICAS WASTEWATER ACCESS GAP COMMUNITY PROGRAM SUPPORT

$31.6M is obligated on an award with a reported potential end date of February 15, 2027.

Performance period

87.6%

As of Oct 4, 2026Potential end Feb 15, 2027

Current award value as a share of potential value

100.0%

$51.0M current$51.0M potential
Supporting data

Reported performance starts Mar 4, 2024.

No later potential end date is reported; current and potential end dates are both Feb 15, 2027.

$31.6M is obligated against $51.0M in current reported award value (61.9%).

Obligations are compared with current reported award value, not treated as a contract ceiling.

PIID 68HERC24F0156

S C & A INC

R499- TACKLING EMERGING CONTAMINANTS (TEC) WATER TECHNICAL ASSISTANCE (WATERTA) P00006: EXERCISE OPTION PERIOD 2 AND OBLIGATE FUNDING

$52.8M is obligated on an award with a reported potential end date of September 18, 2027.

Performance period

68.1%

As of Oct 4, 2026Potential end Sep 18, 2027

Current award value as a share of potential value

100.0%

$53.6M current$53.6M potential
Supporting data

Reported performance starts Sep 19, 2024.

No later potential end date is reported; current and potential end dates are both Sep 18, 2027.

$52.8M is obligated against $53.6M in current reported award value (98.5%).

Obligations are compared with current reported award value, not treated as a contract ceiling.

PIID 68HERC24F0515

GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC.

R499 SUPPORT FOR LEAD SERVICE LINE INVENTORIES AND REPLACEMENT - GET THE LEAD OUT (GLO) INITIATIVE

$34.1M is obligated on an award with a reported potential end date of March 4, 2028.

Performance period

39.2%

As of Oct 4, 2026Potential end Mar 4, 2028

Current award value as a share of potential value

88.3%

$34.2M current$38.7M potential
Supporting data

Reported performance starts Nov 4, 2025.

Current performance is reported through Nov 4, 2027.

$34.1M is obligated against $34.2M in current reported award value (99.7%).

Obligations are compared with current reported award value, not treated as a contract ceiling.

PIID 68HERC26F0013

These are research leads, not confirmed recompetes. USAspending records through Oct 4, 2026; reported dates and values can change through later modifications.

Recent federal contract award activity

Recent contract actions with unusually large obligation changes or meaningful shifts in contractor and funding-office activity.

Deobligation

This action

−$36.1M

WESTON SOLUTIONS INC

REGION 9 (FUNDING OFFICE)

START MODIFICATION EXTEND PERIOD OF PERFORMANCE (POP) END DATE SHALL NOW BE 12/31/2026. DE-OBLIGATION ($36,120,272.11).

Why it stands out

This award recorded a material contraction.

The action removed $36.1M. A deobligation does not by itself show lower requirement demand.

Award net obligations
$13.9M
Share of 12-month positive obligations
13.2%
Supporting data
Prime contractor
#39 · 0.20% share
down 38 ranks · −23.9 percentage points · $84.4M net decline; action accounted for 42.8%
Funding office
0% attributed share
−24.9 percentage points · $91.5M net decline; action accounted for 39.5%
Related:Largest share lossLargest deobligation action
PIID 68HE0925F0018 · Mod P00005
Modification

This action

+$18.4M

S C & A INC

OFFICE FOR WATER (OW) (FUNDING)

R499- TACKLING EMERGING CONTAMINANTS (TEC) WATER TECHNICAL ASSISTANCE (WATERTA) P00006: EXERCISE OPTION PERIOD 2 AND OBLIGATE FUNDING

Why it stands out

The award grew alongside stronger office-attributed spending.

The modification added $18.4M while office-attributed obligations rose $58.0M overall.

Award net obligations
$52.8M
Share of 12-month positive obligations
6.7%
Supporting data
Prime contractor
#3 · 8.8% share
$6.9M net decline despite this positive action
Funding office
#1 · 44.7% attributed share
up 1 rank · +26.6 percentage points · $58.0M net increase; action accounted for 31.6%
Related:Funding office gain
PIID 68HERC24F0515 · Mod P00006
Modification

This action

+$15.6M

GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC.

OFFICE FOR WATER (OW) (FUNDING)

R499 SUPPORT FOR LEAD SERVICE LINE INVENTORIES AND REPLACEMENT - GET THE LEAD OUT (GLO) INITIATIVE

Why it stands out

The contractor climbed 4 positions in this market.

It now ranks #1 by positive obligations over the latest 12 months.

Award net obligations
$34.1M
Share of 12-month positive obligations
5.7%
Supporting data
Prime contractor
#1 · 17.1% share
up 4 ranks · +13.2 percentage points · $33.0M net increase; action accounted for 47.2%
Related:Largest share gain
PIID 68HERC26F0013 · Mod P00004
Base award

This action

+$12.9M

THE CADMUS GROUP LLC

OFFICE FOR WATER (OW) (FUNDING)

R425 - WATER ENGINEERING SUPPORT SERVICES FOR OFFICE OF GROUND WATER AND DRINKING WATER (OGWDW).

Why it stands out

The contractor climbed 5 positions in this market.

It now ranks #4 by positive obligations over the latest 12 months.

Award net obligations
$12.9M
Share of 12-month positive obligations
4.7%
Supporting data
Prime contractor
#4 · 6.3% share
up 5 ranks · +3.4 percentage points · $7.1M net increase; action exceeded it by $5.8M
PIID 68HERW26F0203
Deobligation

This action

−$10.6M

EASTERN RESEARCH GROUP INC

OFC FOR AIR RAD (OAR) (FUNDING)

MOD 15 - THE PURPOSE OF THIS BILATERAL MODIFICATION IS TO DE-OBLIGATE FUNDING FROM THE CALL ORDER

Why it stands out

This award recorded a material contraction.

The action removed $10.6M. A deobligation does not by itself show lower requirement demand.

Award net obligations
$6.8M
Share of 12-month positive obligations
3.9%
Supporting data
Prime contractor
#2 · 13.6% share
−2.3 percentage points · $18.7M net decline; action accounted for 56.8%
Funding office
#3 · 6.2% attributed share
−10.3 percentage points · $41.1M net decline; action accounted for 25.8%
Related:Funding office decline
PIID 68HERH24F0015 · Mod P00015
Modification

This action

+$5.0M

TETRA TECH, INC.

REGION 9 (FUNDING OFFICE)

THE PURPOSE OF THIS BILATERAL MODIFICATION (P00007) IS TO INCREASE AND FUND LOE INCREASE AND POP EXTENSION FOR N. AGENCY EE/CA - TO #0007 (DO #68HE0923F0051) ON RAES2 CONTRACT #68HE0923D0002.

Why it stands out

This award grew while spending attributed to its office declined.

The modification added $5.0M while office-attributed obligations fell $91.5M overall.

Award net obligations
$20.3M
Share of 12-month positive obligations
1.8%
Supporting data
Prime contractor
#5 · 6.0% share
$5.0M net decline despite this positive action
Funding office
0% attributed share
$91.5M net decline despite this positive action
PIID 68HE0923F0051 · Mod P00007
View recent award activity by date (10)
  1. ENVIRONMENTAL MANAGEMENT SUPPORT, INCBase award · PIID 68HERL26F0180
    Action+$2.5M
    Award net obligations$2.5M
  2. WESTON SOLUTIONS INCBase award · PIID 68HE0326F0147
    Action+$867K
    Award net obligations$867K
  3. TOEROEK ASSOCIATES, INC.Base award · PIID 68HE0726F0170
    Action+$457K
    Award net obligations$457K
  4. WESTON SOLUTIONS INCModification · PIID 68HE0225F0004
    Action+$259K
    Award net obligations$14.6M
  5. MABBETT & ASSOCIATES, INC.Base award · PIID 68HE0326F0145
    Action+$201K
    Award net obligations$201K
  6. TOEROEK ASSOCIATES, INC.Base award · PIID 68HE0826F0070
    Action+$160K
    Award net obligations$160K
  7. TETRA TECH, INC.Modification · PIID 68HE0923F0042
    Action+$100K
    Award net obligations$1.4M
  8. TETRA TECH, INC.Deobligation · PIID 68HERH25F0269
    Action−$46K
    Award net obligations$382K
  9. WESTON SOLUTIONS INCModification · PIID 68HE0125F0014
    Action+$1.0M
    Award net obligations$10.7M
  10. WESTON SOLUTIONS INCBase award · PIID 68HE0726F0173
    Action+$843K
    Award net obligations$843K

EPA environmental consulting market FAQs

Answers based on reported federal contract data.

Who are the top EPA environmental consulting contractors?

In the 12 months through October 4, 2026, GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC., EASTERN RESEARCH GROUP INC, and S C & A INC were the leading EPA environmental consulting prime contractors by positive obligations.

  1. #1

    GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC.

    $46,898,690 in positive obligations

  2. #2

    EASTERN RESEARCH GROUP INC

    $37,247,921 in positive obligations

  3. #3

    S C & A INC

    $24,229,847 in positive obligations

Rankings use reported USAspending award data.

Did EPA contract obligations decrease in the environmental consulting market?

Yes. Measured by net prime contract obligations, reported EPA activity in the environmental consulting market decreased 23.8% from $351,369,918 in the preceding 12 months to $267,905,924 in the 12 months through October 4, 2026.

Latest 12 months
$267,905,924
Net prime contract obligations
Preceding 12 months
$351,369,918
Net prime contract obligations
Change
−23.8%
Between matched 12-month periods

Reported contract actions, not outlays or a forecast.

What recent EPA contract award activity was reported in the environmental consulting market?

Recent EPA contract award activity reported in the environmental consulting market included actions for WESTON SOLUTIONS INC, S C & A INC, and GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC. during the 12 months through October 4, 2026.

Action obligations are transaction-level amounts, not current award-level obligations.

Which procurement methods were reported for EPA contracts under NAICS 541620?

From October 5, 2025 through October 4, 2026, EPA reported 616 positive-obligation awards for environmental consulting under NAICS 541620. The leading award type was delivery order. The leading reported procedure was np.

Positive-obligation awards
616
Leading reported procedure
Np
46% of positive obligations
Leading award type
Delivery Order
74.5% of positive obligations
Full and open
32.8%
of positive obligations
Reported parent IDV
99.3%
of positive obligations

Percentages use positive obligations as the denominator.

Which EPA environmental consulting awards may warrant recompete research?

3 EPA environmental consulting awards may warrant recompete research based on reported potential-end dates, including awards held by EASTERN RESEARCH GROUP INC, S C & A INC, and GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC.

Research leads, not confirmed recompetes. Dates may change through later modifications.

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Related market research

Complete market indexes:

Same NAICS at other agencies:

Nearby NAICS at this agency:

Markets sharing leading prime records:

Leading-prime vehicle memberships:

Company memberships do not establish award-channel use.

Reported obligations include contract actions from October 1, 2021 through October 4, 2026. Set-aside and business-size fields reflect award records, not a contractor's current eligibility.

Review data methodology