Top DOJ water and sewer line and related structures construction contractors
In the 12 months ending Oct 5, 2026, the Department of Justice obligated $14.2M in net prime contract dollars under NAICS 237110, up 59.9% from $8.9M in the preceding 12 months. 15 prime contractors received positive obligations, and 3 of them accounted for 80% of that spend.
Prime contracts funded by the Department of Justice. Latest 12 months: Oct 6, 2025 to Oct 5, 2026. Source: USAspending.gov.
Obligations by fiscal year
Net prime contract obligations by federal fiscal year (October to September).
Top DOJ contractors for NAICS 237110
Ranked by positive obligations in the latest 12 months. Share is of all positive obligations in this market.
| # | Contractor | Latest 12 mo | Prior 12 mo | Share | Rank change |
|---|---|---|---|---|---|
| 1 | DFW CAD Services LLC | $6.6M | $1.1M | 46.2% | ▲ 3 |
| 2 | Southern Oak Contracting Partners JV, LLC | $4.2M | $0 | 29.6% | New |
| 3 | OCS Construction Services Inc | $1.2M | $2.6M | 8.5% | ▼ 1 |
| 4 | American West Construction, LLC | $754K | $2.8M | 5.3% | ▼ 3 |
| 5 | Penns Contracting Inc | $569K | $0 | 4.0% | New |
| 6 | Znth, Inc. | $273K | $0 | 1.9% | New |
| 7 | Hunatek Federal Services, LLC | $178K | $0 | 1.3% | New |
| 8 | A&G Septic and Grease LLC | $150K | $0 | 1.1% | New |
| 9 | Mechanical Business Holdings LLC | $147K | $0 | 1.0% | New |
| 10 | C & C Pumps & Supply Inc | $79K | $0 | 0.5% | New |
| 11 | University Mechanical Contractors, Inc, | $56K | $0 | 0.4% | New |
| 12 | Pace Analytical Services, LLC | $12K | $3K | 0.1% | ▲ 5 |
| 13 | Atlanta Hydrovac LLC | $9K | $7K | 0.1% | ▲ 2 |
| 14 | Garth Corp | $6K | $0 | 0.0% | New |
| 15 | Western Oilfields Supply Company | $5K | $0 | 0.0% | New |
What changed in the last 12 months
Contractors with the largest change in reported obligations versus the preceding 12 months.
Largest gains
- DFW CAD Services LLC$1.1M → $6.6M (+$5.4M) · now #1
- Southern Oak Contracting Partners JV, LLC$0 → $4.2M (+$4.2M) · now #2
- Penns Contracting Inc$0 → $569K (+$569K) · now #5
Largest declines
- American West Construction, LLC$2.8M → $754K (−$2.0M) · now #4
- Sea PAC Engineering Inc$1.7M → $0 (−$1.7M) · no latest-period obligations
- OCS Construction Services Inc$2.6M → $1.2M (−$1.4M) · now #3
New to this market
9 contractors received their first obligations in this market (since FY2022) during the latest 12 months. The largest:
| Contractor | First obligation | Latest 12 mo |
|---|---|---|
| Southern Oak Contracting Partners JV, LLC | Sep 14, 2026 | $4.2M |
| Znth, Inc. | Sep 17, 2026 | $273K |
| Hunatek Federal Services, LLC | Aug 5, 2026 | $178K |
| A&G Septic and Grease LLC | Apr 30, 2026 | $150K |
| Mechanical Business Holdings LLC | Oct 14, 2025 | $147K |
| C & C Pumps & Supply Inc | May 22, 2026 | $79K |
| University Mechanical Contractors, Inc, | Jan 13, 2026 | $56K |
| Garth Corp | Sep 14, 2026 | $6K |
Where the money comes from
Funding sub-agencies within the Department of Justice, latest 12 months. The funding organization can differ from the office that runs the requirement.
| Funding sub-agency | Latest 12 mo | Prior 12 mo | Change |
|---|---|---|---|
| Federal Prison System / Bureau of Prisons | $14.2M | $8.9M | Up $5.3M (59.7%) |
Potential recompetes
Large awards in this market whose current period of performance ends in the next 18 months. Treat these as research leads: options, extensions, and follow-on vehicles often change the timing.
| Award | Incumbent | Obligated | Current end |
|---|---|---|---|
| 15BFA025C00000016 | OCS Construction Services Inc PHX_ PROJECT 24Z6AS1_ REPLACE SEWAGE LINER | $3.8M | Dec 26, 2026 |
| 15BFA024C00000023 | Sea PAC Engineering Inc MCC SAN DIEGO- REPLACE WASTE LINE- 24Z6AR4 | $8.6M | Dec 31, 2026 |
| 15BBNF26C50200001 | DFW CAD Services LLC 26Z5AU3 FCC BEAUMONT RELOCATE LIFT STATION EO 14398 | $2.1M | Mar 16, 2027 |
| 15BBNF26C00000041 | DFW CAD Services LLC 26Z5AN1- FCI SEAGOVILLE- REPLACE JAIL SEWER LINE EO 14398 | $4.5M | Sep 6, 2027 |
| 15BBNF26C51800002 | Southern Oak Contracting Partners JV, LLC FCC OAKDALE - REPLACE WATER TANKS - PROJECT 26Z5AX9 - E.O. 14398 | $4.2M | Sep 14, 2027 |
Common questions
Who are the top DOJ contractors for NAICS 237110?
In the latest 12 months, DFW CAD Services LLC ($6.6M), Southern Oak Contracting Partners JV, LLC ($4.2M), OCS Construction Services Inc ($1.2M) received the most DOJ obligations for water and sewer line and related structures construction.
How concentrated is this market?
The eight largest primes held 97.8% of positive obligations, and DFW CAD Services LLC alone held 46.2%. 9 contractors won their first obligations in this market during the latest 12 months.
Are any large DOJ NAICS 237110 contracts ending soon?
5 of the largest awards in this market reach their current end date in the next 18 months. The first is 15BFA025C00000016 (OCS Construction Services Inc, $3.8M obligated), ending Dec 26, 2026. An end date is a research lead, not a confirmed recompete: options and extensions often move it.
Related markets
NAICS 237110 across all agencies
Interior · NAICS 237110
$752.0MState Department · NAICS 237110
$508.2MDoD · NAICS 237110
$154.3MVA · NAICS 237110
$85.3MUSDA · NAICS 237110
$38.2MDHS · NAICS 237110
$8.7MHHS · NAICS 237110
$6.6MFigures are net obligations on prime contracts (award types A–D) from USAspending.gov, grouped by funding agency and the NAICS code on each award. Net obligations include deobligations and corrections, so they can differ from positive-obligation totals. See methodology.
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