Top DoD sewage treatment facilities contractors
In the 12 months ending Oct 5, 2026, the Department of Defense obligated $129.3M in net prime contract dollars under NAICS 221320, down 7.1% from $139.2M in the preceding 12 months. 67 prime contractors received positive obligations, and 12 of them accounted for 80% of that spend.
Prime contracts funded by the Department of Defense. Latest 12 months: Oct 6, 2025 to Oct 5, 2026. Source: USAspending.gov.
DoD publishes contract data to USAspending with a 90-day delay, so the most recent months understate DoD activity.
Obligations by fiscal year
Net prime contract obligations by federal fiscal year (October to September).
Top DoD contractors for NAICS 221320
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 | Aqua Engineers Inc | $20.8M | $29.4M | 16.1% | — |
| 2 | Nikken Sogyo Co., Ltd. | $14.1M | $12.5M | 10.9% | ▲ 1 |
| 3 | Foreign Utility Consolidated Reporting | $11.8M | $2.8M | 9.1% | ▲ 11 |
| 4 | American Water Military Services, LLC | $11.0M | $27.5M | 8.5% | ▼ 2 |
| 5 | American States Utility Services Inc | $8.7M | $8.6M | 6.7% | ▼ 1 |
| 6 | OLD Dominion Utility Services, Inc. | $8.5M | $8.3M | 6.5% | ▼ 1 |
| 7 | City of Aberdeen | $7.6M | $7.6M | 5.9% | ▼ 1 |
| 8 | Riverbend Water Resources District | $5.0M | $0 | 3.8% | New |
| 9 | Nikken-Metawater JV | $4.8M | $4.6M | 3.8% | — |
| 10 | KLJ Services LLC | $4.5M | $0 | 3.5% | New |
| 11 | Florida Keys Aqueduct Authority | $3.5M | $3.4M | 2.7% | — |
| 12 | Optech-Monette, LLC | $3.4M | $1.9M | 2.6% | ▲ 3 |
| 13 | P D R Properties, Inc. | $3.3M | $4.2M | 2.5% | ▼ 3 |
| 14 | Harnett, County of North Carolina | $3.1M | $3.2M | 2.4% | ▼ 2 |
| 15 | Tama City Hall | $2.7M | $5.0M | 2.1% | ▼ 7 |
What changed in the last 12 months
Contractors with the largest change in reported obligations versus the preceding 12 months.
Largest gains
- Foreign Utility Consolidated Reporting$2.8M → $11.8M (+$9.0M) · now #3
- Riverbend Water Resources District$0 → $5.0M (+$5.0M) · now #8
- KLJ Services LLC$0 → $4.5M (+$4.5M) · now #10
Largest declines
- American Water Military Services, LLC$27.5M → $11.0M (−$16.5M) · now #4
- Aqua Engineers Inc$29.4M → $20.8M (−$8.5M) · now #1
- Perc Water Corporation$6.9M → $1.3M (−$5.5M) · now #19
New to this market
20 contractors received their first obligations in this market (since FY2022) during the latest 12 months. The largest:
| Contractor | First obligation | Latest 12 mo |
|---|---|---|
| Riverbend Water Resources District | Jan 28, 2026 | $5.0M |
| KLJ Services LLC | Mar 30, 2026 | $4.5M |
| Bartow County Government | May 18, 2026 | $2.6M |
| Crico Enterprise, LLC | Dec 6, 2025 | $1.4M |
| LOW Country Water Services, LLC | Apr 2, 2026 | $430K |
| NAC Heavy Highway Inc | Jul 1, 2026 | $249K |
| OUU Clean Technology K.K. | Oct 15, 2025 | $99K |
| M Davidson & Associates Inc | Dec 1, 2025 | $95K |
Where the money comes from
Funding sub-agencies within the Department of Defense, 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 |
|---|---|---|---|
| Department of the Army | $66.7M | $75.8M | Down $9.2M (12.1%) |
| Department of the Navy | $44.4M | $44.1M | Up $308K (0.7%) |
| Department of the Air Force | $18.0M | $19.0M | Down $1.0M (5.3%) |
| Washington Headquarters Services | $258K | $244K | Up $14K (5.7%) |
| Immediate Office of the Secretary of Defense | $8K | $14K | Down $6K (44.9%) |
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 |
|---|---|---|---|
| SP060024C8360 | Mission Critical Environmental, LLC THIS IS A CONTINUATION OF W9124P-23-C-0002, AWARDED ON NOVEMBER 9, 2022, DUE TO THE TRANSFER OF CONTRACT ADMINISTRATION. THE PERIOD OF PERFORMANCE IS NOVEMBER 10, 2022 TO… | $11.9M | Nov 9, 2026 |
| W519TC26CA004 | Crico Enterprise, LLC THIS REQUIREMENT IS TO OPERATE WATER COLLECTION, TREATMENT PLANT, AND DISTRIBUTION SYSTEMS; OPERATE WASTEWATER COLLECTION AND TREATMENT PLANT; AND PERFORM ANALYTICAL TESTING… | $1.4M | Nov 30, 2026 |
| FA448426F0048 | Optech-Monette, LLC PROVIDE ALL MANAGEMENT, LABOR, TOOLS, EQ AND VEHICLES TO OPERATE, MAINTAIN AND REPAIR, THE TERTIARY WASTEWATER TREATMENT PLANT, EIGHT LIFT STATIONS, LAND APPLICATION SITE,… | $1.8M | Jan 31, 2027 |
| FA448622C0001 | Sociedade DE Empreitadas E Trabalhos Hidraulicos, S.A. FA448622C0001 OPERATE AND MAINTAIN WASTEWATER TREATMENT PLANT SERVICES | $1.6M | Jan 31, 2027 |
| N6945026C0016 | KLJ Services LLC THE CONTRACTOR SHALL PROVIDE ALL LABOR, MATERIAL, EQUIPMENT, TRANSPORTATION AND SUPERVISION NECESSARY TO PROVIDE SANITARY SEWAGE TREATMENT INFRASTRUCTURE FOR THE NGC 2 ADR SITE… | $4.5M | Mar 30, 2027 |
| FA480122P0025 | Optech-Monette, LLC WWTP SERVICES BASE YEARS PLUS 4 OPTION YEARS. | $1.8M | Apr 30, 2027 |
| W9127826CA013 | Bartow County Government BARTOW COUNTY SEWER SYSTEM UPGRADE FOR ALLATOONA LAKE US 41 #3 AND MCKASKEY CAMPGROUNDS | $2.6M | May 17, 2027 |
| N4008426F4329 | Nikken Sogyo Co., Ltd. MAINT OF INCINERATOR PLANT EQUIPMENT AND SYSTEMS, MAINT OF CALIBRATION WEIGHT SCALES, OPERATION AND MAINT OF SEWAGE TREATMENT FACILITIES AND SEWER LINES, PAINT WASTE WATER… | $6.0M | May 31, 2027 |
| N4008425F4189 | Nikken Sogyo Co., Ltd. THIS TASK ORDER COMBINES SEVERAL WORK REQUIREMENTS TO INCLUDE VARIOUS EQUIPMENT REPAIRS AND OVERHAUL SERVICES AT YSK-1829 YSK-3842, PLANT A, AND YSK-3843. | $7.5M | Jun 15, 2027 |
| N4008426F4291 | Nikken-Metawater JV FUNDING OBLIGATION FOR 3RD OPTION PERIOD RECURRING WORK (CLIN 0007) FOR N4008423D3000 WASTEWATER TREATMENT PLANT (WWTP) OPERATION AND MAINTENANCE SERVICES FOR CFAO | $4.8M | Jun 30, 2027 |
Common questions
Who are the top DoD contractors for NAICS 221320?
In the latest 12 months, Aqua Engineers Inc ($20.8M), Nikken Sogyo Co., Ltd. ($14.1M), Foreign Utility Consolidated Reporting ($11.8M) received the most DoD obligations for sewage treatment facilities.
How concentrated is this market?
The eight largest primes held 67.6% of positive obligations, and Aqua Engineers Inc alone held 16.1%. 20 contractors won their first obligations in this market during the latest 12 months.
Are any large DoD NAICS 221320 contracts ending soon?
10 of the largest awards in this market reach their current end date in the next 18 months. The first is SP060024C8360 (Mission Critical Environmental, LLC, $11.9M obligated), ending Nov 9, 2026. An end date is a research lead, not a confirmed recompete: options and extensions often move it.
Related markets
NAICS 221320 across all agencies
State Department · NAICS 221320
$31.7MDOJ · NAICS 221320
$15.8MFigures 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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