Federal Capture Intelligence

Top DOI water and sewer line and related structures construction contractors (NAICS 237110)

Contract actions: October 1, 2021 – September 11, 2026 Updated September 12, 2026 Department of the Interior agency guide NAICS 237110 · Water and Sewer Line and Related Structures Construction
Latest 12 months
$718.4M
Net obligations · Up $128.1M vs. $590.4M preceding
Prime contractors
127
With positive obligations in the latest 12 months

Research the DOI federal contracting market for water and sewer line and related structures construction under NAICS 237110. 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 Water and Sewer Line and Related Structures Construction at the Department of the Interior

Federal records show $2.5B in net obligations across 702 awards in Water and Sewer Line and Related Structures Construction at the Department of the Interior from Oct 1, 2021 through Sep 11, 2026. This market accounts for 9.7% of $25.9B in agency-wide net prime contract obligations over the period shown. Latest 12-month net obligations increased 21.7% from $590.4M to $718.4M. 6 prime contractors accounted for at least 80% of positive obligations in that latest period.

Fiscal-year activity

FY26 is year-to-date through Sep 11, 2026; earlier years show complete fiscal-year totals.

FY26 year-to-date: $696.6M versus $425.7M through the same date in FY25 (+63.6%).
Net obligations · complete fiscal yearNet obligations · FY26 YTDContract actions
View fiscal-year data table
Fiscal yearNet obligationsContract actionsCoverage
FY2022$280.8M401Complete
FY2023$498.6M384Complete
FY2024$581.4M379Complete
FY2025$447.6M362Complete
FY2026$696.6M378YTD through Sep 11, 2026

Market at a glance

All reported prime contract awards
All-period net obligations
$2.5B
702 awards · 439 prime contractors
Latest 12-month movement
+21.7%
$718.4M vs. $590.4M
Leading eight prime share
85.4%
Share held by the eight leading prime contractors in the latest 12 months
View agency share, denominators, and set-aside reporting
Agency context
9.7% of $25.9B in agency-wide net obligations.
Set-aside share when reported
71.4% of 682 awards with reported set-aside status.
Set-aside reporting
487 set aside · 195 no set-aside · 20 not reported

What changed in the last 12 months?

Sep 12, 2025–Sep 11, 2026, compared with Sep 12, 2024–Sep 11, 2025.

Competitive shifts

Buyer demand

View 3 additional material changes

Award activity

Competitive shifts

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 11, 2026.

54.8% of positive obligations were attributed to DSC CONTRACTING SERVICES DIVISION. That represents $394.5M, up $267.5M from the preceding 12 months.

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

  1. DSC CONTRACTING SERVICES DIVISION54.8% · $394.5M · up $267.5M
  2. FOUR CORNERS CONSTRUCTION OFFICE39.7% · $285.4M · up $141.3M
  3. ALBUQUERQUE AREA OFFICE0.75% · $5.4M · down $27.8M
  4. NER SERVICES MABO (43000)0.69% · $4.9M · up $989K
  5. BUREAU OF INDIAN AFFAIRS0.62% · $4.4M · up $4.4M
  6. All other reported offices3.4% 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

    DSC CONTRACTING SERVICES DIVISION

    #1Up 2 from #3

    Latest 12 months

    $394.5M

    54.8% of positive obligations

    Versus preceding 12 months

    +$267.5M

    20 active prime contractors · 25 awards

    View office comparison and evidence

    Reported obligations increased 210.5% from $127.0M to $394.5M. The office’s share of positive obligations moved from 21.5% to 54.8%, a change of +33.3 percentage points.

    The latest period contains 78 actions across 25 awards and 7 newly active prime contractors. The preceding period contained 18 active prime contractors and 21 awards.

    Leading award-level changes

  2. Reported funding office

    FOUR CORNERS CONSTRUCTION OFFICE

    #2Down 1 from #1

    Latest 12 months

    $285.4M

    39.7% of positive obligations

    Versus preceding 12 months

    +$141.3M

    7 active prime contractors · 11 awards

    View office comparison and evidence

    Reported obligations increased 98.1% from $144.1M to $285.4M. The office’s share of positive obligations moved from 24.4% to 39.7%, a change of +15.3 percentage points.

    The latest period contains 34 actions across 11 awards and 3 newly active prime contractors. The preceding period contained 4 active prime contractors and 6 awards.

  3. Reported funding office

    ALBUQUERQUE AREA OFFICE

    #3Up 2 from #5

    Latest 12 months

    $5.4M

    0.75% of positive obligations

    Versus preceding 12 months

    −$27.8M

    5 active prime contractors · 8 awards

    View office comparison and evidence

    Reported obligations decreased 83.8% from $33.2M to $5.4M. The office’s share of positive obligations moved from 5.6% to 0.75%, a change of −4.9 percentage points.

    The latest period contains 24 actions across 8 awards and 2 newly active prime contractors. The preceding period contained 5 active prime contractors and 7 awards.

  4. Reported funding office

    NER SERVICES MABO (43000)

    #4Up 5 from #9

    Latest 12 months

    $4.9M

    0.69% of positive obligations

    Versus preceding 12 months

    +$989K

    8 active prime contractors · 9 awards

    View office comparison and evidence

    Reported obligations increased 25.1% from $3.9M to $4.9M. The office’s share of positive obligations moved from 0.67% to 0.69%, a change of 0.0 percentage points.

    The latest period contains 12 actions across 9 awards and 4 newly active prime contractors. The preceding period contained 6 active prime contractors and 6 awards.

  5. Reported funding office

    BUREAU OF INDIAN AFFAIRS

    #5New to the positive-obligation ranking

    Latest 12 months

    $4.4M

    0.62% of positive obligations

    Versus preceding 12 months

    +$4.4M

    1 active prime contractor · 1 award

    View office comparison and evidence

    Reported obligations rose from $0 to $4.4M. The office’s share of positive obligations moved from 0% to 0.62%, a change of +0.6 percentage points.

    The latest period contains 10 actions across 1 award and 1 newly active prime contractor. The preceding period contained 0 active prime contractors and 0 awards.

  6. Reported funding office

    PACIFIC NW REGION PN 6615

    #6Up 1 from #7

    Latest 12 months

    $4.1M

    0.57% of positive obligations

    Versus preceding 12 months

    −$4.9M

    2 active prime contractors · 2 awards

    View office comparison and evidence

    Reported obligations decreased 54.7% from $9.0M to $4.1M. The office’s share of positive obligations moved from 1.5% to 0.57%, a change of −1.0 percentage points.

    The latest period contains 9 actions across 2 awards and 1 newly active prime contractor. The preceding period contained 1 active prime contractor and 1 award.

  7. Reported funding office

    PWR OLYM MABO(83000)

    #7Up 6 from #13

    Latest 12 months

    $2.5M

    0.34% of positive obligations

    Versus preceding 12 months

    +$932K

    5 active prime contractors · 6 awards

    View office comparison and evidence

    Reported obligations increased 61.0% from $1.5M to $2.5M. The office’s share of positive obligations moved from 0.26% to 0.34%, a change of +0.1 percentage points.

    The latest period contains 15 actions across 6 awards and 4 newly active prime contractors. The preceding period contained 2 active prime contractors and 2 awards.

  8. Reported funding office

    UPPER COLORADO REGIONAL OFFICE

    #8Down 4 from #4

    Latest 12 months

    $2.1M

    0.29% of positive obligations

    Versus preceding 12 months

    −$89.7M

    2 active prime contractors · 2 awards

    View office comparison and evidence

    Reported obligations decreased 97.7% from $91.8M to $2.1M. The office’s share of positive obligations moved from 15.5% to 0.29%, a change of −15.3 percentage points.

    The latest period contains 16 actions across 2 awards. The preceding period contained 3 active prime contractors and 3 awards.

  9. Reported funding office

    PWR LAME(81000)

    #9Up 9 from #18

    Latest 12 months

    $1.8M

    0.24% of positive obligations

    Versus preceding 12 months

    +$976K

    5 active prime contractors · 7 awards

    View office comparison and evidence

    Reported obligations increased 124.4% from $784K to $1.8M. The office’s share of positive obligations moved from 0.13% to 0.24%, a change of +0.1 percentage points.

    The latest period contains 11 actions across 7 awards and 2 newly active prime contractors. The preceding period contained 7 active prime contractors and 10 awards.

  10. Reported funding office

    SER SOUTH MABO (54000)

    #10Up 25 from #35

    Latest 12 months

    $1.7M

    0.24% of positive obligations

    Versus preceding 12 months

    +$1.6M

    3 active prime contractors · 3 awards

    View office comparison and evidence

    Reported obligations increased 1557.9% from $104K to $1.7M. The office’s share of positive obligations moved from 0.020% to 0.24%, a change of +0.2 percentage points.

    The latest period contains 4 actions across 3 awards and 3 newly active prime contractors. The preceding period contained 2 active prime contractors and 2 awards.

  11. Reported funding office

    GREAT PLAINS REGIONAL OFFICE

    #11Down 9 from #2

    Latest 12 months

    $1.7M

    0.24% of positive obligations

    Versus preceding 12 months

    −$136.2M

    5 active prime contractors · 5 awards

    View office comparison and evidence

    Reported obligations decreased 98.8% from $137.9M to $1.7M. The office’s share of positive obligations moved from 23.4% to 0.24%, a change of −23.1 percentage points.

    The latest period contains 11 actions across 5 awards and 1 newly active prime contractor. The preceding period contained 4 active prime contractors and 4 awards.

    Leading award-level changes

  12. Reported funding office

    LOWER COLORADO REGIONAL OFFICE

    #13Down 7 from #6

    Latest 12 months

    $1.1M

    0.15% of positive obligations

    Versus preceding 12 months

    −$14.2M

    3 active prime contractors · 3 awards

    View office comparison and evidence

    Reported obligations decreased 92.9% from $15.3M to $1.1M. The office’s share of positive obligations moved from 2.6% to 0.15%, a change of −2.4 percentage points.

    The latest period contains 6 actions across 3 awards and 1 newly active prime contractor. The preceding period contained 2 active prime contractors and 3 awards.

  13. Reported funding office

    PWR HONO MABO(82000)

    #40Down 32 from #8

    Latest 12 months

    $32K

    0% of positive obligations

    Versus preceding 12 months

    −$7.7M

    2 active prime contractors · 3 awards

    View office comparison and evidence

    Reported obligations decreased 99.6% from $7.8M to $32K. The office’s share of positive obligations moved from 1.3% to 0%, a change of −1.3 percentage points.

    The latest period contains 9 actions across 3 awards. The preceding period contained 2 active prime contractors and 3 awards.

Contract types, competition, and procurement methods

From Sep 12, 2025 through Sep 11, 2026, 157 awards had positive obligations totaling $735.4M. Negotiated Proposal/Quote was the leading reported procedure, accounting for 79.8% of positive obligations. Awards with a reported parent IDV accounted for 0.39%.

Leading award type
99.1%
Definitive Contract
Leading reported procedure
79.8%
Negotiated Proposal/Quote
Reported parent IDV
0.39%
of positive obligations had a reported parent IDV
Median reported offers
3
154 of 157 awards reported offers

Buying method changes

Compared with Sep 12, 2024–Sep 11, 2025. Based on 157 current awards and 167 preceding awards with positive net obligations.

Reported full-and-open obligation share
62.5%
Down from 88.6% 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 237110 peer median, parent-IDV obligation share is 0.4 percentage points higher, reported full-and-open obligation share is 60.8 percentage points higher, delivery-order obligation share is 0.4 percentage points higher, and median positive award obligations are 20.4% higher.

MeasureThis marketPeer medianDifference
Parent-IDV obligation share0.39%0%+0.4 pts
Reported full-and-open obligation share62.5%1.8%+60.8 pts
Delivery-order obligation share0.39%0%+0.4 pts
Median positive award obligations$95K$79K+20.4%
Peer cohort and comparison limits

The peer median gives each of the 7 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
Definitive Contract(D)91$728.7M99.1%
Purchase Order(B)62$3.7M0.51%
Delivery Order(C)3$2.9M0.39%
BPA Call(A)1$14K0%

Reported parent-award types

Reported valueAwardsPositive obligationsShare
IDC(B)3$2.9M0.39%
BPA(E)1$14K0%
Not reported153$732.5M99.6%

Single- or multiple-award parent structure

Reported valueAwardsPositive obligationsShare
Single Award(S)4$2.9M0.39%
Not reported153$732.5M99.6%

Solicitation procedures

Reported valueAwardsPositive obligationsShare
Negotiated Proposal/Quote(NP)38$586.7M79.8%
Sb(SEALED BID)2$72.9M9.9%
Np(NEGOTIATED PROPOSAL/QUOTE)15$56.3M7.7%
Only One Source(SSS)15$11.8M1.6%
Simplified Acquisition(SP1)62$4.8M0.66%
Sp1(SIMPLIFIED ACQUISITION)16$1.2M0.16%
Other reported values9$1.6M0.21%

Extent competed

Reported valueAwardsPositive obligationsShare
Full and Open Competition(A)16$460.0M62.5%
Full and Open Competition After Exclusion of Sources(D)27$127.8M17.4%
A(FULL AND OPEN COMPETITION)11$101.7M13.8%
D(FULL AND OPEN COMPETITION AFTER EXCLUSION OF SOURCES)6$27.5M3.7%
Not Available for Competition(B)7$10.5M1.4%
Competed Under SAP(F)52$4.2M0.57%
Other reported values38$3.7M0.50%

Fair-opportunity and limited-source reporting

Reported valueAwardsPositive obligationsShare
Not reported157$735.4M100.0%

Other-than-full-and-open reasons

Reported valueAwardsPositive obligationsShare
Authorized by Statute (FAR 6.302-5(A)(2)(I))(OTH)12$11.0M1.5%
Only One Source-Other (FAR 6.302-1 Other)(ONE)3$1.2M0.16%
SAP Non-Competition (FAR 13)(SP2)9$534K0.070%
Urgency (FAR 6.302-2)(URG)6$192K0.030%
Standardization (FAR 6.302-1(B)(4))(STD)1$56K0.010%
Not reported126$722.4M98.2%

Contract pricing types

Reported valueAwardsPositive obligationsShare
Firm Fixed Price(J)118$603.4M82.1%
K(FIXED PRICE WITH ECONOMIC PRICE ADJUSTMENT)3$81.6M11.1%
J(FIRM FIXED PRICE)34$49.3M6.7%
Fixed Price with Economic Price Adjustment(K)1$750K0.10%
Labor Hours(Z)1$234K0.030%

Product or Service Codes

Reported valueAwardsPositive obligationsShare
Construction of Water Supply Facilities(Y1NE)27$317.0M43.1%
Construction of Sewage and Waste Facilities(Y1ND)10$260.8M35.5%
Repair or Alteration of Water Supply Facilities(Z2NE)24$72.3M9.8%
Construction of Other Utilities(Y1NZ)5$36.5M5.0%
Repair or Alteration of Restoration of Real Property (Public or Private)(Z2QA)3$8.9M1.2%
Construction of Recreation Facilities (Non-Building)(Y1PA)2$7.9M1.1%
Other reported values86$31.9M4.3%

Awarding subagencies

Reported valueAwardsPositive obligationsShare
National Park Service(1443)80$421.9M57.4%
Bureau of Reclamation(1425)23$303.8M41.3%
Bureau of Indian Affairs and Bureau of Indian Education(1450)4$4.7M0.64%
U.S. Fish and Wildlife Service(1448)33$2.4M0.33%
Bureau of Land Management(1422)12$2.2M0.30%
U.S. Geological Survey(1434)4$255K0.030%
Other reported values1$49K0.0067%

Awarding offices

Reported valueAwardsPositive obligationsShare
Dsc Contracting Services Division(140P20)22$407.1M55.4%
Upper Colorado Regional Office(140R40)16$296.9M40.4%
Ner Services Mabo (43000)(140P43)7$4.9M0.67%
Bureau of Indian Affairs(140A16)1$4.4M0.60%
Pacific Nw Region Pn 6615(140R10)2$4.1M0.56%
Pwr Olym Mabo(83000)(140P83)6$2.5M0.33%
Other reported values103$15.5M2.1%

Reported parent IDVs

Reported valueAwardsPositive obligationsShare
140R4023D0005(1425)2$2.0M0.27%
140R3024D0013(1425)1$901K0.12%
140FS223A0085(1448)1$14K0%
Not reported153$732.5M99.6%

Offers, award size, and timing

Median reported offers
3 median
154 reported · 3 not reported
Positive award obligations
$95K median
$28K–$495K middle 50%
Reported performance period
201 days (~7 months) median
157 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 11, 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
6 of 127prime contractors account for at least 80% of positive obligations in the last 12 months
Largest prime contractor
17.8%of positive obligations in the last 12 months
Leading four prime contractors
60.8%of positive obligations in the last 12 months
Leading eight prime contractors
85.4%of positive obligations in the last 12 months

Based on $730.6M in positive obligations during the 12 months ending Sep 11, 2026. Individual shares and movement appear in the searchable rankings below. Movement compares with Sep 12, 2024–Sep 11, 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

    $129.8M

    17.8%

    Dollar movement

    +$84.2M

    vs. prior 12 months

    Last 12mo awards

    2 awards

    13 actions

    Historical and award details for RECORD STEEL AND CONSTRUCTION, INC.
    Obligations: prior → latest
    $45.5M → $129.8M
    +185.0%
    Share: prior → latest
    7.7% → 17.8%
    +10.1 percentage points
    All-period obligations
    $185.7M
    7.4% of all-period positive obligations · 4 awards
    Recorded activity
    Since Nov 16, 2021
    through Sep 4, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside21
    Not reported00
    Reported small business00
    All-period set-aside types

    None reported.

  2. #2

    Last 12mo obligations

    $129.5M

    17.7%

    Dollar movement

    +$129.5M

    vs. prior 12 months

    Last 12mo awards

    2 awards

    6 actions

    Historical and award details for AMES FEDERAL CONTRACTING GROUP LLC
    Obligations: prior → latest
    $0 → $129.5M
    Not comparable
    Share: prior → latest
    0% → 17.7%
    +17.7 percentage points
    All-period obligations
    $129.5M
    5.2% of all-period positive obligations · 2 awards
    Recorded activity
    Since Nov 10, 2025
    through Jul 20, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside20
    Not reported00
    Reported small business00
    All-period set-aside types

    None reported.

  3. #3

    Last 12mo obligations

    $109.5M

    15.0%

    Dollar movement

    +$109.5M

    vs. prior 12 months

    Last 12mo awards

    1 award

    1 action

    Historical and award details for G.S.E. CONSTRUCTION COMPANY, INC.
    Obligations: prior → latest
    $0 → $109.5M
    Not comparable
    Share: prior → latest
    0% → 15.0%
    +15.0 percentage points
    All-period obligations
    $109.5M
    4.4% of all-period positive obligations · 1 award
    Recorded activity
    Since May 28, 2026
    through May 28, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside10
    Not reported00
    Reported small business00
    All-period set-aside types

    None reported.

  4. #4

    Last 12mo obligations

    $75.5M

    10.3%

    Dollar movement

    +$75.5M

    vs. prior 12 months

    Last 12mo awards

    1 award

    1 action

    Historical and award details for FLATLAND ENERGY SERVICES LLC
    Obligations: prior → latest
    $0 → $75.5M
    Not comparable
    Share: prior → latest
    0% → 10.3%
    +10.3 percentage points
    All-period obligations
    $75.5M
    3.0% of all-period positive obligations · 1 award
    Recorded activity
    Since Jun 9, 2026
    through Jun 9, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside10
    Reported no set-aside00
    Not reported00
    Reported small business10
    All-period set-aside types
    • 1 · Total small business
  5. #5

    Last 12mo obligations

    $72.9M

    10.0%

    Dollar movement

    +$72.9M

    vs. prior 12 months

    Last 12mo awards

    1 award

    1 action

    Historical and award details for CARSTENSEN CONTRACTING INC
    Obligations: prior → latest
    $0 → $72.9M
    Not comparable
    Share: prior → latest
    0% → 10.0%
    +10.0 percentage points
    All-period obligations
    $72.9M
    2.9% of all-period positive obligations · 1 award
    Recorded activity
    Since Sep 4, 2026
    through Sep 4, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside10
    Not reported00
    Reported small business00
    All-period set-aside types

    None reported.

  6. #6

    Last 12mo obligations

    $70.0M

    9.6%

    Dollar movement

    +$28.2M

    vs. prior 12 months

    Last 12mo awards

    2 awards

    4 actions

    Historical and award details for PERINI MANAGEMENT SERVICES, INC.
    Obligations: prior → latest
    $41.9M → $70.0M
    +67.2%
    Share: prior → latest
    7.1% → 9.6%
    +2.5 percentage points
    All-period obligations
    $111.9M
    4.5% of all-period positive obligations · 3 awards
    Recorded activity
    Since Apr 25, 2025
    through Aug 31, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside22
    Not reported00
    Reported small business00
    All-period set-aside types

    None reported.

  7. #7

    Last 12mo obligations

    $18.6M

    2.5%

    Dollar movement

    +$18.6M

    vs. prior 12 months

    Last 12mo awards

    2 awards

    6 actions

    Historical and award details for BAIRCO CONSTRUCTION INC
    Obligations: prior → latest
    −$4K → $18.6M
    Not comparable
    Share: prior → latest
    0% → 2.5%
    +2.5 percentage points
    All-period obligations
    $36.3M
    1.4% of all-period positive obligations · 10 awards
    Recorded activity
    Since Nov 15, 2021
    through Jun 10, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside24
    Reported no set-aside00
    Not reported00
    Reported small business24
    All-period set-aside types
    • 6 · Total small business
    • 4 · WOSB set-aside
  8. #8

    Last 12mo obligations

    $18.0M

    2.5%

    Dollar movement

    +$18.0M

    vs. prior 12 months

    Last 12mo awards

    1 award

    1 action

    Historical and award details for CBSE2 JV
    Obligations: prior → latest
    $0 → $18.0M
    Not comparable
    Share: prior → latest
    0% → 2.5%
    +2.5 percentage points
    All-period obligations
    $18.0M
    0.72% of all-period positive obligations · 1 award
    Recorded activity
    Since Sep 3, 2026
    through Sep 3, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside10
    Reported no set-aside00
    Not reported00
    Reported small business10
    All-period set-aside types
    • 1 · Total small business
  9. #9

    Last 12mo obligations

    $12.2M

    1.7%

    Dollar movement

    +$12.2M

    vs. prior 12 months

    Last 12mo awards

    2 awards

    3 actions

    Historical and award details for MCKENZIE CONSTRUCTION & SITE DEVELOPMENT LLC
    Obligations: prior → latest
    $0 → $12.2M
    Not comparable
    Share: prior → latest
    0% → 1.7%
    +1.7 percentage points
    All-period obligations
    $12.2M
    0.49% of all-period positive obligations · 2 awards
    Recorded activity
    Since Sep 25, 2025
    through Aug 3, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside10
    Reported no set-aside10
    Not reported00
    Reported small business20
    All-period set-aside types
    • 1 · Total small business
  10. #10

    Last 12mo obligations

    $10.4M

    1.4%

    Dollar movement

    −$1.6M

    vs. prior 12 months

    Last 12mo awards

    2 awards

    14 actions

    Historical and award details for ORCOM, A DIVISION OF ORTEGA COMPANIES, INC
    Obligations: prior → latest
    $11.9M → $10.4M
    −13.2%
    Share: prior → latest
    2.0% → 1.4%
    −0.6 percentage points
    All-period obligations
    $22.6M
    0.90% of all-period positive obligations · 5 awards
    Recorded activity
    Since Oct 21, 2021
    through Jun 5, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside11
    Reported no set-aside10
    Not reported00
    Reported small business21
    All-period set-aside types
    • 2 · 8(a) sole source
    • 1 · Total small business
  11. #11

    Last 12mo obligations

    $9.8M

    1.3%

    Dollar movement

    +$9.8M

    vs. prior 12 months

    Last 12mo awards

    2 awards

    3 actions

    Historical and award details for GUARDIAN CONSTRUCTION, INC.
    Obligations: prior → latest
    $38K → $9.8M
    +25357.0%
    Share: prior → latest
    0.010% → 1.3%
    +1.3 percentage points
    All-period obligations
    $11.8M
    0.47% of all-period positive obligations · 5 awards
    Recorded activity
    Since Sep 14, 2022
    through Aug 18, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside20
    Reported no set-aside01
    Not reported00
    Reported small business20
    All-period set-aside types
    • 2 · Total small business
    • 1 · 8(a) sole source
  12. #12

    Last 12mo obligations

    $9.4M

    1.3%

    Dollar movement

    +$3.5M

    vs. prior 12 months

    Last 12mo awards

    1 award

    10 actions

    Historical and award details for STRONGHOLD ENGINEERING INC
    Obligations: prior → latest
    $5.9M → $9.4M
    +59.8%
    Share: prior → latest
    1.0% → 1.3%
    +0.3 percentage points
    All-period obligations
    $224.6M
    9.0% of all-period positive obligations · 1 award
    Recorded activity
    Since Mar 14, 2023
    through Sep 4, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside11
    Not reported00
    Reported small business00
    All-period set-aside types

    None reported.

  13. #13

    Last 12mo obligations

    $8.5M

    1.2%

    Dollar movement

    −$124.1M

    vs. prior 12 months

    Last 12mo awards

    1 award

    5 actions

    Historical and award details for JACOBS PROJECT MANAGEMENT CO.
    Obligations: prior → latest
    $132.6M → $8.5M
    −93.6%
    Share: prior → latest
    22.4% → 1.2%
    −21.3 percentage points
    All-period obligations
    $271.0M
    10.8% of all-period positive obligations · 1 award
    Recorded activity
    Since Aug 30, 2024
    through Sep 10, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside11
    Not reported00
    Reported small business00
    All-period set-aside types

    None reported.

  14. #14

    Last 12mo obligations

    $6.6M

    0.91%

    Dollar movement

    +$6.6M

    vs. prior 12 months

    Last 12mo awards

    1 award

    2 actions

    Historical and award details for TEHAMA TECHNICAL SERVICES, LLC
    Obligations: prior → latest
    $0 → $6.6M
    Not comparable
    Share: prior → latest
    0% → 0.91%
    +0.9 percentage points
    All-period obligations
    $6.6M
    0.27% of all-period positive obligations · 1 award
    Recorded activity
    Since May 27, 2026
    through Jul 17, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside10
    Reported no set-aside00
    Not reported00
    Reported small business10
    All-period set-aside types
    • 1 · 8(a) sole source
  15. #15

    Last 12mo obligations

    $5.9M

    0.80%

    Dollar movement

    +$5.9M

    vs. prior 12 months

    Last 12mo awards

    1 award

    4 actions

    Historical and award details for AMES 1, LLC
    Obligations: prior → latest
    $0 → $5.9M
    Not comparable
    Share: prior → latest
    0% → 0.80%
    +0.8 percentage points
    All-period obligations
    $5.9M
    0.23% of all-period positive obligations · 1 award
    Recorded activity
    Since Sep 18, 2025
    through Jun 23, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside10
    Reported no set-aside00
    Not reported00
    Reported small business10
    All-period set-aside types
    • 1 · Total small business

Potential federal contract recompetes

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

HARTMAN-WALSH PAINTING COMPANY

MOD P051 P5 & P6 ABATEMENT & RECOAT.

The reported potential end date moved later 2 times in the latest 12 months.

Performance period

93.3%

As of Sep 11, 2026Potential end Feb 16, 2027

Current award value as a share of potential value

99.6%

$37.7M current$37.9M potential
Supporting data

Reported performance starts Sep 1, 2020.

No later potential end date is reported; current and potential end dates are both Feb 16, 2027.

$37.7M is obligated against $37.7M in current reported award value (100.0%).

Reported potential end dates: Sep 1, 2026 → Sep 10, 2026 → Sep 30, 2026 → Sep 10, 2026 → Dec 1, 2026 → Feb 16, 2027.

MOD P050 NO COST TIME EXTENSION.

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

PIID 140R1020C0012

R.C.S. CONSTRUCTION, INC.

MORU 272051 MODIFICATION 09

The reported potential end date moved later 2 times in the latest 12 months.

Performance period

70.0%

As of Sep 11, 2026Potential end Jun 5, 2027

Current award value as a share of potential value

100.0%

$27.1M current$27.1M potential
Supporting data

Reported performance starts Dec 26, 2024.

No later potential end date is reported; current and potential end dates are both Jun 5, 2027.

$27.1M is obligated against $27.1M in current reported award value (100.0%).

Reported potential end dates: Dec 16, 2026 → Dec 31, 2026 → May 20, 2027 → Jun 5, 2027.

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

PIID 140P2025C0007

STRONGHOLD ENGINEERING INC

GRCA 190083 / 250176 - IMPROVE POTABLE WATER SUPPLY TO INNER-CANYON AND SOUTH RIM, TRANS-CANYON WATER DISTRIBUTION PIPELINE, GRAND CANYON NATIONAL PARK, AZ

$224.6M is obligated on an award with a reported potential end date of January 8, 2028.

Performance period

72.5%

As of Sep 11, 2026Potential end Jan 8, 2028

Current award value as a share of potential value

100.0%

$224.6M current$224.6M potential
Supporting data

Reported performance starts Mar 14, 2023.

No later potential end date is reported; current and potential end dates are both Jan 8, 2028.

$224.6M is obligated against $224.6M in current reported award value (100.0%).

Reported potential end dates: Sep 11, 2026 → Oct 31, 2026 → Feb 8, 2027 → Jan 8, 2028.

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

PIID 140P2023C0001

PERINI MANAGEMENT SERVICES, INC.

GLCA 318744 DESIGN BUILD - REPLACE CRITICAL WASTEWATER UTILITIES

$42.3M is obligated on an award with a reported potential end date of August 30, 2027.

Performance period

51.8%

As of Sep 11, 2026Potential end Aug 30, 2027

Current award value as a share of potential value

100.0%

$42.3M current$42.3M potential
Supporting data

Reported performance starts Aug 27, 2025.

No later potential end date is reported; current and potential end dates are both Aug 30, 2027.

$42.3M is obligated against $42.3M in current reported award value (100.0%).

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

PIID 140P2025C0058

RECORD STEEL AND CONSTRUCTION, INC.

YELL 326133 REHABILITATE CANYON VILLAGE WASTEWATER TREATMENT SYSTEMS

$129.2M is obligated on an award with a reported potential end date of February 14, 2028.

Performance period

21.4%

As of Sep 11, 2026Potential end Feb 14, 2028

Current award value as a share of potential value

100.0%

$129.2M current$129.2M potential
Supporting data

Reported performance starts Apr 22, 2026.

No later potential end date is reported; current and potential end dates are both Feb 14, 2028.

$129.2M is obligated against $129.2M in current reported award value (100.0%).

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

PIID 140P2026C0016

These are research leads, not confirmed recompetes. USAspending records through Sep 11, 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.

Base award

This action

+$75.5M

FLATLAND ENERGY SERVICES LLC

FOUR CORNERS CONSTRUCTION OFFICE

NGWSP BLOCK 2-3 HDD

Why it stands out

No activity for this contractor was reported in this market during the preceding 12 months.

The base action placed the contractor #4 in this market by positive obligations over the latest 12 months.

Award net obligations
$75.5M
Share of 12-month positive obligations
10.3%
Supporting data
Prime contractor
#4 · 10.3% share
Newly active in this market; no actions were reported in the preceding 12 months
Funding office
#2 · 39.7% attributed share
down 1 rank · +15.3 percentage points · $141.3M net increase; action accounted for 53.4%
PIID 140R4026C0008
Base award

This action

+$129.2M

RECORD STEEL AND CONSTRUCTION, INC.

DSC CONTRACTING SERVICES DIVISION

YELL 326133 REHABILITATE CANYON VILLAGE WASTEWATER TREATMENT SYSTEMS

Why it stands out

The contractor climbed 3 positions in this market.

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

Award net obligations
$129.2M
Share of 12-month positive obligations
17.7%
Supporting data
Prime contractor
#1 · 17.8% share
up 3 ranks · +10.1 percentage points · $84.2M net increase; action exceeded it by $44.9M
Funding office
#1 · 54.8% attributed share
up 2 ranks · +33.3 percentage points · $267.5M net increase; action accounted for 48.3%
Related:Largest share gainFunding office gain
PIID 140P2026C0016
Base award

This action

+$109.5M

G.S.E. CONSTRUCTION COMPANY, INC.

DSC CONTRACTING SERVICES DIVISION

YELL 310402 GRANT WASTEWATER TREATMENT PLANT AND COLLECTIONS AND CANYON COLLECTIONS

Why it stands out

No activity for this contractor was reported in this market during the preceding 12 months.

The base action placed the contractor #3 in this market by positive obligations over the latest 12 months.

Award net obligations
$109.5M
Share of 12-month positive obligations
15.0%
Supporting data
Prime contractor
#3 · 15.0% share
Newly active in this market; no actions were reported in the preceding 12 months
PIID 140P2026C0017
Base award

This action

+$72.9M

CARSTENSEN CONTRACTING INC

FOUR CORNERS CONSTRUCTION OFFICE

NGWSP BLOCK 2-3 PIPELINE

Why it stands out

No activity for this contractor was reported in this market during the preceding 12 months.

The base action placed the contractor #5 in this market by positive obligations over the latest 12 months.

Award net obligations
$72.9M
Share of 12-month positive obligations
10.0%
Supporting data
Prime contractor
#5 · 10.0% share
Newly active in this market; no actions were reported in the preceding 12 months
PIID 140R4026C0013
Base award

This action

+$69.5M

PERINI MANAGEMENT SERVICES, INC.

DSC CONTRACTING SERVICES DIVISION

DEVA 318717 - "REHABILITATE FURNACE CREEK AND COW CREEK WATER AND WASTEWATER TREATMENT SYSTEMS."

Why it stands out

The funding office climbed 2 positions in attributed spending.

It now ranks #1 in attributed spending.

Award net obligations
$69.5M
Share of 12-month positive obligations
9.5%
Supporting data
Prime contractor
#6 · 9.6% share
down 1 rank · +2.5 percentage points · $28.2M net increase; action exceeded it by $41.4M
PIID 140P2026C0037
Base award

This action

+$67.7M

AMES FEDERAL CONTRACTING GROUP LLC

FOUR CORNERS CONSTRUCTION OFFICE

NGWSP INTAKE & RIVER PUMPING PLANT

Why it stands out

No activity for this contractor was reported in this market during the preceding 12 months.

The base action placed the contractor #2 in this market by positive obligations over the latest 12 months.

Award net obligations
$67.7M
Share of 12-month positive obligations
9.3%
Supporting data
Prime contractor
#2 · 17.7% share
Newly active in this market; no actions were reported in the preceding 12 months
Related:Largest newly observed contractor
PIID 140R4026C0006
View recent award activity by date (10)
  1. JACOBS PROJECT MANAGEMENT CO.Modification · PIID 140R4024C0013
    Action+$320K
    Award net obligations$271.0M
  2. THALLE CONSTRUCTION CO INCModification · PIID 140R6024C0005
    Action+$125K
    Award net obligations$29.0M
  3. WILLIS MANAGEMENT ENTERPRISES INCBase award · PIID 140A2326P0389
    Action+$63K
    Award net obligations$63K
  4. PARKS LAND DEVELOPMENT, INCBase award · PIID 140P5426C0018
    Action+$152K
    Award net obligations$152K
  5. CARSTENSEN CONTRACTING INCBase award · PIID 140R4026C0013
    Action+$72.9M
    Award net obligations$72.9M
  6. STRONGHOLD ENGINEERING INCModification · PIID 140P2023C0001
    Action+$1.4M
    Award net obligations$224.6M
  7. RECORD STEEL AND CONSTRUCTION, INC.Modification · PIID 140P2025C0040
    Action+$436K
    Award net obligations$46.2M
  8. SUBURBAN CONTRACTORS LLCBase award · PIID 140P4226C0018
    Action+$321K
    Award net obligations$321K
  9. CDM CONSTRUCTORS INCModification · PIID INR17PC00023
    Action+$21K
    Award net obligations$361.6M
  10. CBSE2 JVBase award · PIID 140P2026C0047
    Action+$18.0M
    Award net obligations$18.0M

DOI water and sewer line and related structures construction market FAQs

Answers based on reported federal contract data.

Who are the top DOI water and sewer line and related structures construction contractors?

In the 12 months through September 11, 2026, RECORD STEEL AND CONSTRUCTION, INC., AMES FEDERAL CONTRACTING GROUP LLC, and G.S.E. CONSTRUCTION COMPANY, INC. were the leading DOI water and sewer line and related structures construction prime contractors by positive obligations.

  1. #1

    RECORD STEEL AND CONSTRUCTION, INC.

    $129,776,925 in positive obligations

  2. #2

    AMES FEDERAL CONTRACTING GROUP LLC

    $129,487,962 in positive obligations

  3. #3

    G.S.E. CONSTRUCTION COMPANY, INC.

    $109,487,800 in positive obligations

Rankings use reported USAspending award data.

Did DOI contract obligations increase in the water and sewer line and related structures construction market?

Yes. Measured by net prime contract obligations, reported DOI activity in the water and sewer line and related structures construction market increased 21.7% from $590,366,202 in the preceding 12 months to $718,432,277 in the 12 months through September 11, 2026.

Latest 12 months
$718,432,277
Net prime contract obligations
Preceding 12 months
$590,366,202
Net prime contract obligations
Change
+21.7%
Between matched 12-month periods

Reported contract actions, not outlays or a forecast.

What recent DOI contract award activity was reported under NAICS 237110?

Recent DOI contract award activity reported in the water and sewer line and related structures construction market included actions for FLATLAND ENERGY SERVICES LLC, RECORD STEEL AND CONSTRUCTION, INC., and G.S.E. CONSTRUCTION COMPANY, INC. during the 12 months through September 11, 2026.

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

Which procurement methods were reported for DOI contracts under NAICS 237110?

From September 12, 2025 through September 11, 2026, DOI reported 157 positive-obligation awards for water and sewer line and related structures construction under NAICS 237110. The leading award type was definitive contract. The leading reported procedure was negotiated proposal/quote.

Positive-obligation awards
157
Leading reported procedure
Negotiated Proposal/Quote
79.8% of positive obligations
Leading award type
Definitive Contract
99.1% of positive obligations
Full and open
62.6%
of positive obligations
Reported parent IDV
0.4%
of positive obligations

Percentages use positive obligations as the denominator.

Which DOI water and sewer line and related structures construction awards may warrant recompete research?

5 DOI water and sewer line and related structures construction awards may warrant recompete research based on reported potential-end dates, including awards held by HARTMAN-WALSH PAINTING COMPANY, R.C.S. CONSTRUCTION, INC., and STRONGHOLD ENGINEERING 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:

Reported obligations include contract actions from October 1, 2021 through September 11, 2026. Set-aside and business-size fields reflect award records, not a contractor's current eligibility.

Review data methodology