Federal Capture Intelligence

Top EPA environmental consulting contractors (NAICS 541620)

Contract actions: October 1, 2021 – September 10, 2026 Updated September 11, 2026 Environmental Protection Agency agency guide NAICS 541620 · Environmental Consulting Services
Latest 12 months
$261.6M
Net obligations · Down $103.5M vs. $365.1M preceding
Prime contractors
62
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 3,400 awards in EPA environmental consulting from Oct 1, 2021 through Sep 10, 2026. This market accounts for 16.2% of $10.8B in agency-wide net prime contract obligations over the period shown. Latest 12-month net obligations decreased 28.4% from $365.1M to $261.6M. 15 prime contractors accounted for at least 80% of positive obligations in that latest period.

Fiscal-year activity

FY26 is year-to-date through Sep 10, 2026; earlier years show complete fiscal-year totals.

FY26 year-to-date: $226.5M versus $317.6M through the same date in FY25 (−28.7%).
Net obligations · complete fiscal yearNet obligations · FY26 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$226.5M2,463YTD through Sep 10, 2026

Market at a glance

All reported prime contract awards
All-period net obligations
$1.8B
3,400 awards · 171 prime contractors
Latest 12-month movement
−28.4%
$261.6M vs. $365.1M
Leading eight prime share
61.5%
Share held by the eight leading prime contractors in the latest 12 months
View agency share, denominators, and set-aside reporting
Agency context
16.2% of $10.8B in agency-wide net obligations.
Set-aside share when reported
39.2% of 255 awards with reported set-aside status.
Set-aside reporting
100 set aside · 155 no set-aside · 3,145 not reported

What changed in the last 12 months?

Sep 11, 2025–Sep 10, 2026, compared with Sep 11, 2024–Sep 10, 2025.

Competitive shifts

WESTON SOLUTIONS INC lost the most market share
22.8%→0.8%−22.0 percentage points
The contractor now ranks #22 by positive obligations, based on 242 reported actions.
PB&A/CSS JV, LLC. climbed the most in the contractor rankings
#43→#10Up 33 places
The contractor accounts for 3.2% of positive obligations across 36 reported actions.

Buyer demand

Reported obligations through OFC FOR AIR RAD (OAR) (FUNDING) decreased
$56.3M→$19.6M−$36.6M
Latest-period activity spans 186 awards across 17 prime contractors.
Reported obligations through OFFICE FOR WATER (OW) (FUNDING) increased
$72.2M→$108.7M+$36.6M
Latest-period activity spans 240 awards across 14 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
59.7%→50.4%−9.3 percentage points
Contractors outside the top five now account for 49.6% of positive obligations.

Competitive shifts

5 contractors were first observed in this market during the latest 12 months
$3.7MLatest 12-month obligations
Contractor-level obligations and first-observed dates appear below. “First observed” applies only to this market and the period shown.
View 5 contractors
ContractorLatest 12 months
RESEARCH TRIANGLE INSTITUTE recorded the largest net deobligation
$5.6M→−$2.9M−$8.5M
The contractor now is unranked by positive obligations, based on 12 reported actions.
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 Sep 10, 2026.

40.7% of positive obligations were attributed to OFFICE FOR WATER (OW) (FUNDING). That represents $108.7M, up $36.6M 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)40.7% · $108.7M · up $36.6M
  2. OFC LANDEMERG MGMT (OLEM)(FUNDING)13.2% · $35.2M · up $6.2M
  3. OFC FOR AIR RAD (OAR) (FUNDING)7.3% · $19.6M · down $36.6M
  4. OFC CHEMSFTYPOLLPREV(OCSPP) (FUND)6.8% · $18.1M · up $12.3M
  5. REGION 10 (FUNDING OFFICE)4.4% · $11.7M · up $3.4M
  6. All other reported offices27.6% 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

    $108.7M

    40.7% of positive obligations

    Versus preceding 12 months

    +$36.6M

    14 active prime contractors · 240 awards

    View office comparison and evidence

    Reported obligations increased 50.7% from $72.2M to $108.7M. The office’s share of positive obligations moved from 19.8% to 40.7%, a change of +20.9 percentage points.

    The latest period contains 487 actions across 240 awards and 2 newly active prime contractors. The preceding period contained 16 active prime contractors and 289 awards.

    Leading award-level changes

  2. Reported funding office

    OFC LANDEMERG MGMT (OLEM)(FUNDING)

    #2Up 2 from #4

    Latest 12 months

    $35.2M

    13.2% of positive obligations

    Versus preceding 12 months

    +$6.2M

    21 active prime contractors · 166 awards

    View office comparison and evidence

    Reported obligations increased 21.4% from $29.0M to $35.2M. The office’s share of positive obligations moved from 7.9% to 13.2%, a change of +5.2 percentage points.

    The latest period contains 301 actions across 166 awards and 2 newly active prime contractors. The preceding period contained 23 active prime contractors and 209 awards.

  3. Reported funding office

    OFC FOR AIR RAD (OAR) (FUNDING)

    #3Rank unchanged

    Latest 12 months

    $19.6M

    7.3% of positive obligations

    Versus preceding 12 months

    −$36.6M

    17 active prime contractors · 186 awards

    View office comparison and evidence

    Reported obligations decreased 65.1% from $56.3M to $19.6M. The office’s share of positive obligations moved from 15.4% to 7.3%, a change of −8.1 percentage points.

    The latest period contains 349 actions across 186 awards and 4 newly active prime contractors. The preceding period contained 15 active prime contractors and 207 awards.

  4. Reported funding office

    OFC CHEMSFTYPOLLPREV(OCSPP) (FUND)

    #4Up 10 from #14

    Latest 12 months

    $18.1M

    6.8% of positive obligations

    Versus preceding 12 months

    +$12.3M

    13 active prime contractors · 59 awards

    View office comparison and evidence

    Reported obligations increased 213.9% from $5.8M to $18.1M. The office’s share of positive obligations moved from 1.6% to 6.8%, a change of +5.2 percentage points.

    The latest period contains 202 actions across 59 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

    $11.7M

    4.4% of positive obligations

    Versus preceding 12 months

    +$3.4M

    9 active prime contractors · 84 awards

    View office comparison and evidence

    Reported obligations increased 40.1% from $8.4M to $11.7M. The office’s share of positive obligations moved from 2.3% to 4.4%, a change of +2.1 percentage points.

    The latest period contains 110 actions across 84 awards and 1 newly active prime contractor. The preceding period contained 11 active prime contractors and 82 awards.

  6. Reported funding office

    REGION 6 (FUNDING OFFICE)

    #6Down 1 from #5

    Latest 12 months

    $10.9M

    4.1% of positive obligations

    Versus preceding 12 months

    −$10.8M

    8 active prime contractors · 18 awards

    View office comparison and evidence

    Reported obligations decreased 49.6% from $21.7M to $10.9M. The office’s share of positive obligations moved from 5.9% to 4.1%, a change of −1.8 percentage points.

    The latest period contains 30 actions across 18 awards and 1 newly active prime contractor. The preceding period contained 10 active prime contractors and 23 awards.

  7. Reported funding office

    REGION 5 (FUNDING OFFICE)

    #7Down 1 from #6

    Latest 12 months

    $9.5M

    3.5% of positive obligations

    Versus preceding 12 months

    −$2.9M

    16 active prime contractors · 100 awards

    View office comparison and evidence

    Reported obligations decreased 23.4% from $12.4M to $9.5M. The office’s share of positive obligations moved from 3.4% to 3.5%, a change of +0.1 percentage points.

    The latest period contains 206 actions across 100 awards and 2 newly active prime contractors. The preceding period contained 17 active prime contractors and 111 awards.

  8. Reported funding office

    REGION 2 (FUNDING OFFICE)

    #8Rank unchanged

    Latest 12 months

    $9.0M

    3.4% of positive obligations

    Versus preceding 12 months

    −$1.4M

    10 active prime contractors · 22 awards

    View office comparison and evidence

    Reported obligations decreased 13.7% from $10.4M to $9.0M. The office’s share of positive obligations moved from 2.9% to 3.4%, a change of +0.5 percentage points.

    The latest period contains 38 actions across 22 awards and 2 newly active prime contractors. The preceding period contained 9 active prime contractors and 21 awards.

  9. Reported funding office

    REGION 8 (FUNDING OFFICE)

    #9Up 2 from #11

    Latest 12 months

    $8.2M

    3.1% of positive obligations

    Versus preceding 12 months

    +$45K

    11 active prime contractors · 32 awards

    View office comparison and evidence

    Reported obligations increased 0.5% from $8.2M to $8.2M. The office’s share of positive obligations moved from 2.2% to 3.1%, a change of +0.8 percentage points.

    The latest period contains 52 actions across 32 awards and 3 newly active prime contractors. The preceding period contained 10 active prime contractors and 46 awards.

  10. Reported funding office

    REGION 4 (FUNDING OFFICE)

    #10Up 2 from #12

    Latest 12 months

    $7.3M

    2.7% of positive obligations

    Versus preceding 12 months

    −$659K

    14 active prime contractors · 52 awards

    View office comparison and evidence

    Reported obligations decreased 8.3% from $7.9M to $7.3M. The office’s share of positive obligations moved from 2.2% to 2.7%, a change of +0.6 percentage points.

    The latest period contains 61 actions across 52 awards and 4 newly active prime contractors. The preceding period contained 16 active prime contractors and 71 awards.

  11. Reported funding office

    OFC ENFCOMPL ASSU (OECA) (FUNDING)

    #11Down 4 from #7

    Latest 12 months

    $6.8M

    2.5% of positive obligations

    Versus preceding 12 months

    −$4.6M

    6 active prime contractors · 33 awards

    View office comparison and evidence

    Reported obligations decreased 40.6% from $11.4M to $6.8M. The office’s share of positive obligations moved from 3.1% to 2.5%, a change of −0.6 percentage points.

    The latest period contains 80 actions across 33 awards and 1 newly active prime contractor. The preceding period contained 7 active prime contractors and 59 awards.

  12. Reported funding office

    REGION 7 (FUNDING OFFICE)

    #13Down 4 from #9

    Latest 12 months

    $5.1M

    1.9% of positive obligations

    Versus preceding 12 months

    −$4.7M

    8 active prime contractors · 153 awards

    View office comparison and evidence

    Reported obligations decreased 48.0% from $9.8M to $5.1M. The office’s share of positive obligations moved from 2.7% to 1.9%, a change of −0.8 percentage points.

    The latest period contains 188 actions across 153 awards and 3 newly active prime contractors. The preceding period contained 7 active prime contractors and 159 awards.

  13. Reported funding office

    OFC OF FINANCE & ADMIN (OFA)(FUNDING)

    #15New to the positive-obligation ranking

    Latest 12 months

    $2.8M

    1.0% of positive obligations

    Versus preceding 12 months

    +$2.8M

    6 active prime contractors · 10 awards

    View office comparison and evidence

    Reported obligations rose from $0 to $2.8M. The office’s share of positive obligations moved from 0% to 1.0%, a change of +1.0 percentage points.

    The latest period contains 37 actions across 10 awards and 6 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

    −$5.7M

    0% of positive obligations

    Versus preceding 12 months

    −$94.2M

    23 active prime contractors · 180 awards

    View office comparison and evidence

    Reported obligations moved from $88.5M in net obligations to $5.7M in net deobligations. The office’s share of positive obligations moved from 24.3% to 0%, a change of −24.3 percentage points.

    The latest period contains 295 actions across 180 awards and 7 newly active prime contractors. The preceding period contained 29 active prime contractors and 185 awards.

    Leading award-level changes

Contract types, competition, and procurement methods

From Sep 11, 2025 through Sep 10, 2026, 638 awards had positive obligations totaling $353.5M. Negotiated Proposal/Quote was the leading reported procedure, accounting for 30.3% of positive obligations. Awards with a reported parent IDV accounted for 99.3%.

Leading award type
72.1%
Delivery Order
Leading reported procedure
30.3%
Negotiated Proposal/Quote
Reported parent IDV
99.3%
of positive obligations had a reported parent IDV
Median reported offers
1
148 of 638 awards reported offers · Limited reporting

Buying method changes

Compared with Sep 11, 2024–Sep 10, 2025. Based on 638 current awards and 842 preceding awards with positive net obligations.

Reported full-and-open obligation share
52.8%
Down from 91.8% 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 20.6 percentage points higher, reported full-and-open obligation share is 12.4 percentage points higher, delivery-order obligation share is 22.4 percentage points higher, and median positive award obligations are 45.6% higher.

MeasureThis marketPeer medianDifference
Parent-IDV obligation share99.3%78.7%+20.6 pts
Reported full-and-open obligation share52.8%40.3%+12.4 pts
Delivery-order obligation share72.1%49.7%+22.4 pts
Median positive award obligations$181K$124K+45.6%
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)458$255.0M72.1%
BPA Call(A)164$96.0M27.1%
Definitive Contract(D)10$2.2M0.63%
Purchase Order(B)6$406K0.11%

Reported parent-award types

Reported valueAwardsPositive obligationsShare
IDC(B)440$247.4M70.0%
BPA(E)164$96.0M27.1%
FSS(C)18$7.5M2.1%
Not reported16$2.6M0.74%

Single- or multiple-award parent structure

Reported valueAwardsPositive obligationsShare
Single Award(S)494$293.6M83.0%
Multiple Award(M)128$57.3M16.2%
Not reported16$2.6M0.74%

Solicitation procedures

Reported valueAwardsPositive obligationsShare
Negotiated Proposal/Quote(NP)246$107.2M30.3%
Np(NEGOTIATED PROPOSAL/QUOTE)93$99.4M28.1%
Subject to Multiple Award Fair Opportunity(MAFO)196$96.5M27.3%
Mafo(SUBJECT TO MULTIPLE AWARD FAIR OPPORTUNITY)69$37.2M10.5%
Only One Source(SSS)23$11.2M3.2%
Simplified Acquisition(SP1)7$834K0.24%
Other reported values4$1.1M0.32%

Extent competed

Reported valueAwardsPositive obligationsShare
Full and Open Competition(A)382$186.5M52.8%
A(FULL AND OPEN COMPETITION)135$113.2M32.0%
D(FULL AND OPEN COMPETITION AFTER EXCLUSION OF SOURCES)27$23.5M6.6%
Full and Open Competition After Exclusion of Sources(D)60$17.2M4.9%
Not Available for Competition(B)12$7.6M2.2%
Not Competed(C)11$3.6M1.0%
Other reported values11$2.0M0.55%

Fair-opportunity and limited-source reporting

Reported valueAwardsPositive obligationsShare
Fair Opportunity Given(FAIR)215$123.1M34.8%
Competitive Set Aside(CSA)12$5.3M1.5%
Follow-on Action Following Competitive Initial Action(FOO)27$2.8M0.78%
Other Statutory Authority(OSA)3$1.5M0.42%
Only One Source - Other(ONE)6$696K0.20%
Minimum Guarantee(MG)1$312K0.090%
Other reported values1$28K0.0079%
Not reported373$219.8M62.2%

Other-than-full-and-open reasons

Reported valueAwardsPositive obligationsShare
Authorized by Statute (FAR 6.302-5(A)(2)(I))(OTH)15$8.5M2.4%
Only One Source-Other (FAR 6.302-1 Other)(ONE)10$3.5M0.98%
SAP Non-Competition (FAR 13)(SP2)3$364K0.10%
Urgency (FAR 6.302-2)(URG)1$142K0.040%
Not reported609$341.1M96.5%

Contract pricing types

Reported valueAwardsPositive obligationsShare
Time and Materials(Y)244$94.4M26.7%
Y(TIME AND MATERIALS)92$69.2M19.6%
Cost Plus Fixed Fee(U)86$64.0M18.1%
Firm Fixed Price(J)99$45.3M12.8%
J(FIRM FIXED PRICE)46$33.1M9.4%
U(COST PLUS FIXED FEE)24$29.3M8.3%
Other reported values47$18.2M5.2%

Product or Service Codes

Reported valueAwardsPositive obligationsShare
Support- Professional: Other(R499)112$111.2M31.4%
Support- Professional: Emergency Response/Disaster Planning/Preparedness Support(R429)143$61.5M17.4%
Other Environmental Services(F999)119$55.9M15.8%
Environmental Systems Protection- Environmental Consulting and Legal Support(F115)56$44.1M12.5%
Special Studies/Analysis- Environmental Assessments(B510)35$25.0M7.1%
Support- Professional: Engineering/Technical(R425)59$18.4M5.2%
Other reported values114$37.4M10.6%

Awarding subagencies

Reported valueAwardsPositive obligationsShare
Environmental Protection Agency(6800)637$349.6M98.9%
Department of the Army(2100)1$4.0M1.1%

Awarding offices

Reported valueAwardsPositive obligationsShare
Water, Tribal & Science Division(68HERW)162$111.6M31.6%
Land, Enforcement, and Air Division(68HERL)146$98.9M28.0%
Region 9 Contracting Office(68HE09)79$35.5M10.0%
Region 7 Contracting Office(68HE07)88$21.7M6.1%
Region 6 Contracting Office(68HE06)9$16.9M4.8%
Region 5 Contracting Office(68HE05)45$16.8M4.8%
Other reported values109$52.2M14.8%

Reported parent IDVs

Reported valueAwardsPositive obligationsShare
68HERC23D0008(6800)14$29.2M8.3%
68HERH22A0029(6800)7$25.9M7.3%
68HERC23D0001(6800)15$21.5M6.1%
68HERH22A0020(6800)11$19.6M5.5%
68HE0923D0002(6800)16$16.1M4.5%
68HERC23D0011(6800)30$14.2M4.0%
68HE0623D0001(6800)5$11.6M3.3%
68HE0720D0005(6800)26$10.6M3.0%
Other reported values498$202.2M57.2%
Not reported16$2.6M0.74%

Offers, award size, and timing

Median reported offers
1 median
148 reported · 490 not reported · Limited reporting
Positive award obligations
$181K median
$65K–$444K middle 50%
Reported performance period
729 days (~24 months) median
638 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 Sep 10, 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
15 of 62prime contractors account for at least 80% of positive obligations in the last 12 months
Largest prime contractor
18.5%of positive obligations in the last 12 months
Leading four prime contractors
45.2%of positive obligations in the last 12 months
Leading eight prime contractors
61.5%of positive obligations in the last 12 months

Based on $267.5M in positive obligations during the 12 months ending Sep 10, 2026. Individual shares and movement appear in the searchable rankings below. Movement compares with Sep 11, 2024–Sep 10, 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

    $49.5M

    18.5%

    Dollar movement

    −$254K

    vs. prior 12 months

    Last 12mo awards

    219 awards

    539 actions

    Historical and award details for EASTERN RESEARCH GROUP INC
    Obligations: prior → latest
    $49.8M → $49.5M
    −0.5%
    Share: prior → latest
    13.6% → 18.5%
    +4.9 percentage points
    All-period obligations
    $301.4M
    17.2% of all-period positive obligations · 424 awards
    Recorded activity
    Since Oct 4, 2021
    through Sep 9, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside2117
    Not reported198210
    Reported small business22
    All-period set-aside types

    None reported.

  2. #2

    Last 12mo obligations

    $31.3M

    11.7%

    Dollar movement

    +$15.7M

    vs. prior 12 months

    Last 12mo awards

    32 awards

    84 actions

    Historical and award details for GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC.
    Obligations: prior → latest
    $15.6M → $31.3M
    +100.2%
    Share: prior → latest
    4.3% → 11.7%
    +7.4 percentage points
    All-period obligations
    $97.4M
    5.5% of all-period positive obligations · 86 awards
    Recorded activity
    Since Dec 2, 2021
    through Sep 3, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported3248
    Reported small business00
    All-period set-aside types

    None reported.

  3. #3

    Last 12mo obligations

    $24.2M

    9.0%

    Dollar movement

    −$24.3M

    vs. prior 12 months

    Last 12mo awards

    33 awards

    81 actions

    Historical and award details for S C & A INC
    Obligations: prior → latest
    $48.5M → $24.2M
    −50.2%
    Share: prior → latest
    13.2% → 9.0%
    −4.2 percentage points
    All-period obligations
    $97.7M
    5.6% of all-period positive obligations · 62 awards
    Recorded activity
    Since Oct 1, 2021
    through Aug 31, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside21
    Reported no set-aside00
    Not reported3142
    Reported small business3343
    All-period set-aside types
    • 3 · Total small business
  4. #4

    Last 12mo obligations

    $16.1M

    6.0%

    Dollar movement

    −$5.0M

    vs. prior 12 months

    Last 12mo awards

    27 awards

    49 actions

    Historical and award details for TETRA TECH, INC.
    Obligations: prior → latest
    $21.1M → $16.1M
    −23.6%
    Share: prior → latest
    5.8% → 6.0%
    +0.3 percentage points
    All-period obligations
    $85.9M
    4.9% of all-period positive obligations · 55 awards
    Recorded activity
    Since Dec 1, 2021
    through Sep 9, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported2728
    Reported small business00
    All-period set-aside types

    None reported.

  5. #5

    Last 12mo obligations

    $13.8M

    5.2%

    Dollar movement

    +$5.3M

    vs. prior 12 months

    Last 12mo awards

    74 awards

    116 actions

    Historical and award details for THE CADMUS GROUP LLC
    Obligations: prior → latest
    $8.5M → $13.8M
    +61.8%
    Share: prior → latest
    2.3% → 5.2%
    +2.8 percentage points
    All-period obligations
    $71.2M
    4.0% of all-period positive obligations · 92 awards
    Recorded activity
    Since Feb 15, 2022
    through Sep 8, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported7458
    Reported small business00
    All-period set-aside types

    None reported.

  6. #6

    Last 12mo obligations

    $10.2M

    3.8%

    Dollar movement

    +$6.4M

    vs. prior 12 months

    Last 12mo awards

    114 awards

    139 actions

    Historical and award details for TOEROEK ASSOCIATES, INC.
    Obligations: prior → latest
    $3.9M → $10.2M
    +163.3%
    Share: prior → latest
    1.1% → 3.8%
    +2.8 percentage points
    All-period obligations
    $36.1M
    2.0% of all-period positive obligations · 283 awards
    Recorded activity
    Since Oct 6, 2021
    through Sep 3, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside45
    Reported no set-aside11
    Not reported10999
    Reported small business114105
    All-period set-aside types
    • 9 · Total small business
  7. #7

    Last 12mo obligations

    $9.9M

    3.7%

    Dollar movement

    +$7.3M

    vs. prior 12 months

    Last 12mo awards

    25 awards

    60 actions

    Historical and award details for ENVIRONMENTAL MANAGEMENT SUPPORT, INC
    Obligations: prior → latest
    $2.6M → $9.9M
    +277.5%
    Share: prior → latest
    0.71% → 3.7%
    +3.0 percentage points
    All-period obligations
    $22.6M
    1.3% of all-period positive obligations · 59 awards
    Recorded activity
    Since Oct 20, 2021
    through Sep 9, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside11
    Reported no set-aside00
    Not reported2432
    Reported small business2533
    All-period set-aside types
    • 2 · Total small business
  8. #8

    Last 12mo obligations

    $9.7M

    3.6%

    Dollar movement

    +$3.8M

    vs. prior 12 months

    Last 12mo awards

    24 awards

    65 actions

    Historical and award details for TETRA TECH, INC.
    Obligations: prior → latest
    $5.9M → $9.7M
    +64.5%
    Share: prior → latest
    1.6% → 3.6%
    +2.0 percentage points
    All-period obligations
    $34.2M
    1.9% of all-period positive obligations · 50 awards
    Recorded activity
    Since Oct 5, 2021
    through Sep 1, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported2425
    Reported small business00
    All-period set-aside types

    None reported.

  9. #9

    Last 12mo obligations

    $9.0M

    3.4%

    Dollar movement

    −$1.6M

    vs. prior 12 months

    Last 12mo awards

    51 awards

    74 actions

    Historical and award details for WESTON-TECHLAW JV LLC
    Obligations: prior → latest
    $10.6M → $9.0M
    −14.8%
    Share: prior → latest
    2.9% → 3.4%
    +0.5 percentage points
    All-period obligations
    $55.0M
    3.1% of all-period positive obligations · 94 awards
    Recorded activity
    Since Aug 10, 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 reported5163
    Reported small business5163
    All-period set-aside types

    None reported.

  10. #10

    Last 12mo obligations

    $8.7M

    3.2%

    Dollar movement

    +$8.2M

    vs. prior 12 months

    Last 12mo awards

    10 awards

    36 actions

    Historical and award details for PB&A/CSS JV, LLC.
    Obligations: prior → latest
    $434K → $8.7M
    +1893.9%
    Share: prior → latest
    0.12% → 3.2%
    +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 reported1010
    Reported small business1010
    All-period set-aside types

    None reported.

  11. #11

    Last 12mo obligations

    $8.7M

    3.2%

    Dollar movement

    +$1.4M

    vs. prior 12 months

    Last 12mo awards

    41 awards

    60 actions

    Historical and award details for TETRA TECH, INC.
    Obligations: prior → latest
    $7.2M → $8.7M
    +19.6%
    Share: prior → latest
    2.0% → 3.2%
    +1.3 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 reported4147
    Reported small business00
    All-period set-aside types

    None reported.

  12. #12

    Last 12mo obligations

    $6.8M

    2.5%

    Dollar movement

    +$1.6M

    vs. prior 12 months

    Last 12mo awards

    31 awards

    48 actions

    Historical and award details for GREAT LAKES ENVIRONMENTAL CENTER, INC
    Obligations: prior → latest
    $5.2M → $6.8M
    +31.9%
    Share: prior → latest
    1.4% → 2.5%
    +1.1 percentage points
    All-period obligations
    $38.2M
    2.2% of all-period positive obligations · 84 awards
    Recorded activity
    Since Oct 5, 2021
    through Aug 20, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside43
    Reported no set-aside00
    Not reported2734
    Reported small business2321
    All-period set-aside types
    • 5 · Total small business
  13. #13

    Last 12mo obligations

    $6.6M

    2.5%

    Dollar movement

    +$2.6M

    vs. prior 12 months

    Last 12mo awards

    15 awards

    64 actions

    Historical and award details for SRC INC
    Obligations: prior → latest
    $4.0M → $6.6M
    +65.2%
    Share: prior → latest
    1.1% → 2.5%
    +1.4 percentage points
    All-period obligations
    $34.0M
    1.9% of all-period positive obligations · 34 awards
    Recorded activity
    Since Oct 20, 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 reported1526
    Reported small business00
    All-period set-aside types

    None reported.

  14. #14

    Last 12mo obligations

    $6.6M

    2.5%

    Dollar movement

    −$9.2M

    vs. prior 12 months

    Last 12mo awards

    30 awards

    117 actions

    Historical and award details for TETRA TECH, INC.
    Obligations: prior → latest
    $15.8M → $6.6M
    −58.4%
    Share: prior → latest
    4.3% → 2.5%
    −1.9 percentage points
    All-period obligations
    $110.4M
    6.3% of all-period positive obligations · 79 awards
    Recorded activity
    Since Oct 8, 2021
    through Sep 9, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported3054
    Reported small business00
    All-period set-aside types

    None reported.

  15. #15

    Last 12mo obligations

    $6.5M

    2.4%

    Dollar movement

    +$1.3M

    vs. prior 12 months

    Last 12mo awards

    13 awards

    18 actions

    Historical and award details for TETRA TECH INC
    Obligations: prior → latest
    $5.2M → $6.5M
    +24.4%
    Share: prior → latest
    1.4% → 2.4%
    +1.0 percentage points
    All-period obligations
    $30.7M
    1.8% of all-period positive obligations · 25 awards
    Recorded activity
    Since Oct 8, 2021
    through Sep 8, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported1316
    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

85.3%

As of Sep 10, 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

65.9%

As of Sep 10, 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

These are research leads, not confirmed recompetes. USAspending records through Sep 10, 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
13.5%
Supporting data
Prime contractor
#22 · 0.83% share
down 21 ranks · −22.0 percentage points · $81.2M net decline; action accounted for 44.5%
Funding office
0% attributed share
−24.3 percentage points · $94.2M net decline; action accounted for 38.3%
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 $36.6M overall.

Award net obligations
$52.8M
Share of 12-month positive obligations
6.9%
Supporting data
Prime contractor
#3 · 9.0% share
$24.3M net decline despite this positive action
Funding office
#1 · 40.7% attributed share
up 1 rank · +20.9 percentage points · $36.6M net increase; action accounted for 50.2%
Related:Funding office gain
PIID 68HERC24F0515 · Mod P00006
Base award

This action

+$12.5M

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 #2 by positive obligations over the latest 12 months.

Award net obligations
$18.5M
Share of 12-month positive obligations
4.7%
Supporting data
Prime contractor
#2 · 11.7% share
up 4 ranks · +7.4 percentage points · $15.7M net increase; action accounted for 79.8%
Related:Largest share gain
PIID 68HERC26F0013
Deobligation

This action

−$9.0M

EASTERN RESEARCH GROUP INC

OFFICE FOR WATER (OW) (FUNDING)

F999-CLOSING AMERICAS WASTEWATER ACCESS GAP COMMUNITY PROGRAM SUPPORT

Why it stands out

The award contracted while office-attributed spending grew overall.

The action removed $9.0M while office-attributed spending rose $36.6M.

Award net obligations
$31.6M
Share of 12-month positive obligations
3.4%
Supporting data
Funding office
#1 · 40.7% attributed share
$36.6M net increase despite this negative action
PIID 68HERC24F0156 · Mod P00011
Modification

This action

+$4.4M

TOEROEK ASSOCIATES, INC.

REGION 9 (FUNDING OFFICE)

THE PURPOSE OF THIS TASK ORDER IS TARGETED BROWNFIELDS ASSESSMENT SUPPORT 1

Why it stands out

This award grew while spending attributed to its office declined.

The modification added $4.4M while office-attributed obligations fell $94.2M overall.

Award net obligations
$6.6M
Share of 12-month positive obligations
1.6%
Supporting data
Prime contractor
#6 · 3.8% share
up 16 ranks · +2.8 percentage points · $6.4M net increase; action accounted for 69.6%
Funding office
0% attributed share
$94.2M net decline despite this positive action
PIID 68HE0926F0066 · Mod P00001
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 $94.2M overall.

Award net obligations
$20.3M
Share of 12-month positive obligations
1.9%
Supporting data
Prime contractor
#4 · 6.0% share
$5.0M net decline despite this positive action
Funding office
0% attributed share
$94.2M net decline despite this positive action
PIID 68HE0923F0051 · Mod P00007
View recent award activity by date (10)
  1. TETRA TECH, INC.Modification · PIID 68HE0923F0071
    Action+$5.0M
    Award net obligations$13.5M
  2. WESTON-TECHLAW JV LLCModification · PIID 68HE0322F0065
    Action+$1.8M
    Award net obligations$23.0M
  3. PB&A/CSS JV, LLC.Modification · PIID 68HERC25F0042
    Action+$1.2M
    Award net obligations$2.2M
  4. TETRA TECH, INC.Modification · PIID 68HE0923F0045
    Action+$595K
    Award net obligations$1.8M
  5. ENVIRONMENTAL MANAGEMENT SUPPORT, INCModification · PIID 68HERL26F0132
    Action+$364K
    Award net obligations$607K
  6. PB&A/CSS JV, LLC.Modification · PIID 68HERC22F0536
    Action+$190K
    Award net obligations$850K
  7. MABBETT & ASSOCIATES, INC.Base award · PIID 68HE0326F0115
    Action+$167K
    Award net obligations$167K
  8. EASTERN RESEARCH GROUP INCModification · PIID 68HERW26F0157
    Action+$145K
    Award net obligations$180K
  9. WSP USA ENVIRONMENT & INFRASTRUCTURE INC.Modification · PIID 68HERH25F0250
    Action+$99K
    Award net obligations$697K
  10. WSP USA ENVIRONMENT & INFRASTRUCTURE INC.Deobligation · PIID 68HERL26P0077
    Action−$97K
    Award net obligations$182K

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 September 10, 2026, EASTERN RESEARCH GROUP INC, GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC., and S C & A INC were the leading EPA environmental consulting prime contractors by positive obligations.

  1. #1

    EASTERN RESEARCH GROUP INC

    $49,508,401 in positive obligations

  2. #2

    GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC.

    $31,280,672 in positive obligations

  3. #3

    S C & A INC

    $24,150,847 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 28.4% from $365,078,775 in the preceding 12 months to $261,552,868 in the 12 months through September 10, 2026.

Latest 12 months
$261,552,868
Net prime contract obligations
Preceding 12 months
$365,078,775
Net prime contract obligations
Change
−28.4%
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 September 10, 2026.

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

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

From September 11, 2025 through September 10, 2026, EPA reported 638 positive-obligation awards for environmental consulting under NAICS 541620. The leading award type was delivery order. The leading reported procedure was negotiated proposal/quote.

Positive-obligation awards
638
Leading reported procedure
Negotiated Proposal/Quote
30.3% of positive obligations
Leading award type
Delivery Order
72.1% of positive obligations
Full and open
52.8%
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?

2 EPA environmental consulting awards may warrant recompete research based on reported potential-end dates, including awards held by EASTERN RESEARCH GROUP INC and S C & A 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 September 10, 2026. Set-aside and business-size fields reflect award records, not a contractor's current eligibility.

Review data methodology