Top 100 Contractors in PSC F103: Water Quality Support Services, FY2025

Name: Top 100 Contractors in PSC F103: Water Quality Support Services, FY2025
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe

The top 10 won 59% of FY2025 PSC F103 contract dollars

Contract obligations: $42,355,294 Net of deobligations, by contracts coded PSC F103
Contractors: 172 Parent companies with an obligation
Largest contractor: Seaon Environmental LLC $11.6 million, 22.5% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Seaon Environmental LLC Top agencies Navy (Department of the Navy)	$11,551,197	22.5%	Rank history: #1 in FY2021, #2 in FY2022, #1 in FY2023 and #1 in FY2024; unchanged since FY2024.
2	Sun Coast Resources Inc. Top agencies VA (Department of Veterans Affairs)	$4,694,240	9.2%	Rank history: not on the FY2021–FY2024 lists; new.
3	Meadows Cmpg, Inc. Top agencies Navy (Department of the Navy)	$2,551,853	5.0%	Rank history: #3 in FY2021, #4 in FY2022, #10 in FY2023 and #5 in FY2024; up 2 since FY2024.
4	Koman Government Solutions LLC Top agencies Army (Department of the Army)	$2,377,012	4.6%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2024; up 13 since FY2024.
5	Versar-Envirocon JV Top agencies EPA (Environmental Protection Agency)	$2,086,867	4.1%	Rank history: not on the FY2021 list, #11 in FY2022, #2 in FY2023 and #7 in FY2024; up 2 since FY2024.
6	Potomac Environmental Inc. Top agencies Navy (Department of the Navy)	$1,963,913	3.8%	Rank history: not on the FY2021–FY2022 lists, #4 in FY2023 and #4 in FY2024; down 2 since FY2024.
7	Association of Consultants and Engineers Top agencies Navy (Department of the Navy)	$1,362,686	2.7%	Rank history: #10 in FY2021, not on the FY2022–FY2023 lists and #8 in FY2024; up 1 since FY2024.
8	Stewart Brothers Drilling Company Top agencies Army (Department of the Army)	$1,323,483	2.6%	Rank history: not on the FY2021–FY2024 lists; new.
9	Ecolab Inc. 2 awardees, including Nalco Company LLC and Barclay Water Management, Inc. Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs) DOJ (Department of Justice)	$1,259,031	2.5%	Rank history: #17 in FY2021, not on the FY2022–FY2023 lists and #28 in FY2024; up 19 since FY2024.
10	Venergy Group LLC Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice)	$1,061,447	2.1%	Rank history: #12 in FY2021, #5 in FY2022, #11 in FY2023 and #10 in FY2024; unchanged since FY2024.
11	ABT Global LLC Top agencies EPA (Environmental Protection Agency)	$851,135	1.7%	Rank history: #2 in FY2021, #6 in FY2022, #3 in FY2023 and #3 in FY2024; down 8 since FY2024.
12	Pi2E JV LLP Top agencies Navy (Department of the Navy)	$646,340	1.3%	Rank history: #34 in FY2021, #35 in FY2022, #41 in FY2023 and #18 in FY2024; up 6 since FY2024.
13	EQ & CH Remediation Top agencies EPA (Environmental Protection Agency)	$594,133	1.2%	Rank history: not on the FY2021 list, #1 in FY2022 and not on the FY2023–FY2024 lists; returned.
14	Accord Federal Services, LLC Top agencies VA (Department of Veterans Affairs)	$468,800	0.9%	Rank history: #14 in FY2021, #9 in FY2022, #15 in FY2023 and not on the FY2024 list; returned.
15	HGS Engineering Inc. Top agencies VA (Department of Veterans Affairs)	$461,851	0.9%	Rank history: #21 in FY2021, #31 in FY2022, #21 in FY2023 and #12 in FY2024; down 3 since FY2024.
16	Mecx, Inc. Top agencies VA (Department of Veterans Affairs)	$392,541	0.8%	Rank history: #59 in FY2021, #39 in FY2022, #31 in FY2023 and #30 in FY2024; up 14 since FY2024.
17	Phigenics LLC Top agencies VA (Department of Veterans Affairs)	$390,527	0.8%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2024; down 8 since FY2024.
18	Chugai Technos Corporation Top agencies Navy (Department of the Navy) Army (Department of the Army)	$381,517	0.7%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2024; up 5 since FY2024.
19	Bluestone Environmental Group, Inc. Top agencies Army (Department of the Army)	$362,644	0.7%	Rank history: not on the FY2021 list, #15 in FY2022, #17 in FY2023 and #16 in FY2024; down 3 since FY2024.
20	Dawson Mcg, Inc. Top agencies Army (Department of the Army)	$329,217	0.6%	Rank history: not on the FY2021–FY2024 lists; new.
21	Alhoty Analytical Services W.l.l Top agencies Navy (Department of the Navy)	$316,357	0.6%	Rank history: #22 in FY2021, #21 in FY2022, #30 in FY2023 and #15 in FY2024; down 6 since FY2024.
22	Babcock Laboratories, Inc. Top agencies Navy (Department of the Navy)	$307,634	0.6%	Rank history: #19 in FY2021, #19 in FY2022, #22 in FY2023 and #14 in FY2024; down 8 since FY2024.
23	Hyperion Biotechnology, Inc. Top agencies VA (Department of Veterans Affairs)	$295,701	0.6%	Rank history: not on the FY2021 list, #77 in FY2022, #26 in FY2023 and #35 in FY2024; up 12 since FY2024.
24	I-2-I Solutions, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Army (Department of the Army)	$251,351	0.5%	Rank history: not on the FY2021–FY2023 lists and #54 in FY2024; up 30 since FY2024.
25	Vets-Tidewater LLC Top agencies Navy (Department of the Navy)	$248,012	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
26	Westover Roofing, LLC Top agencies Army (Department of the Army)	$242,794	0.5%	Rank history: not on the FY2021–FY2022 lists, #33 in FY2023 and #25 in FY2024; down 1 since FY2024.
27	Cetec-Cleveland Environmental Technologies Inc. Top agencies VA (Department of Veterans Affairs)	$234,917	0.5%	Rank history: not on the FY2021–FY2023 lists and #41 in FY2024; up 14 since FY2024.
28	Rural and Tribal Environmental Solutions, Inc. Top agencies EPA (Environmental Protection Agency)	$233,523	0.5%	Rank history: #45 in FY2021, #28 in FY2022, #19 in FY2023 and #21 in FY2024; down 7 since FY2024.
29	Pi3E JV LLP Top agencies Navy (Department of the Navy)	$229,758	0.4%	Rank history: not on the FY2021 list, #25 in FY2022, #27 in FY2023 and #19 in FY2024; down 10 since FY2024.
30	Aerostar Environmental and Construction LLC Top agencies Army (Department of the Army)	$214,693	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
31	Erin Enerji Taahhut Insaat Sanayi VE Ticaret Limited Sirketi Top agencies DHA (Defense Health Agency)	$197,940	0.4%	Rank history: not on the FY2021–FY2022 lists, #60 in FY2023 and #65 in FY2024; up 34 since FY2024.
32	Forever Clean Portable Toilets Inc. Top agencies VA (Department of Veterans Affairs)	$190,200	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
33	Evoqua Water Technologies, LLC 2 awardees Top agencies VA (Department of Veterans Affairs)	$169,400	0.3%	Rank history: not on the FY2021–FY2023 lists and #34 in FY2024; up 1 since FY2024.
34	DHL Analytical Inc. Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$158,461	0.3%	Rank history: #55 in FY2021, #32 in FY2022, #43 in FY2023 and not on the FY2024 list; returned.
35	Jacobs Government Services Company Through Jacobs Project Management Co Top agencies VA (Department of Veterans Affairs)	$157,106	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
36	Upper Mississippi River Basin Association Top agencies Army (Department of the Army)	$155,331	0.3%	Rank history: #53 in FY2021, not on the FY2022 list, #36 in FY2023 and #33 in FY2024; down 3 since FY2024.
37	Fire and Safety Team LLC Top agencies DOI (Department of the Interior)	$152,327	0.3%	Rank history: not on the FY2021–FY2023 lists and #83 in FY2024; up 46 since FY2024.
38	CDM Federal Services Europe Joint Venture Top agencies Army (Department of the Army)	$144,523	0.3%	Rank history: not on the FY2021–FY2022 lists, #35 in FY2023 and #36 in FY2024; down 2 since FY2024.
39	First Environment Inc. Top agencies Army (Department of the Army)	$128,331	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
40	Aviate Enterprises, Inc. Top agencies VA (Department of Veterans Affairs)	$128,120	0.2%	Rank history: not on the FY2021 list, #61 in FY2022, #7 in FY2023 and #37 in FY2024; down 3 since FY2024.
41	EA Engineering Science and Technology Inc. PBC Top agencies EPA (Environmental Protection Agency) USAF (Department of the Air Force)	$124,729	0.2%	Rank history: not on the FY2021–FY2023 lists and #45 in FY2024; up 4 since FY2024.
42	Bio-Chem Lab Inc. Top agencies Army (Department of the Army)	$120,701	0.2%	Rank history: #67 in FY2021, #86 in FY2022 and not on the FY2023–FY2024 lists; returned.
43	SGS Korea Co.,Ltd Top agencies Army (Department of the Army)	$114,092	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
44	Bayland Consultants & Designers Inc. Top agencies VA (Department of Veterans Affairs)	$112,459	0.2%	Rank history: not on the FY2021–FY2023 lists and #31 in FY2024; down 13 since FY2024.
45	Green and Sustainable Services, LLC Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture)	$110,334	0.2%	Rank history: not on the FY2021–FY2023 lists and #29 in FY2024; down 16 since FY2024.
46	Hana Engineers & Consultants LLC Top agencies Army (Department of the Army)	$104,707	0.2%	Rank history: not on the FY2021–FY2023 lists and #75 in FY2024; up 29 since FY2024.
47	Terraphase Engineering Inc. Top agencies DOT (Department of Transportation)	$97,449	0.2%	Rank history: #47 in FY2021, #41 in FY2022, not on the FY2023 list and #47 in FY2024; unchanged since FY2024.
48	J.r. Henderson Labs, Inc. Top agencies Navy (Department of the Navy)	$96,120	0.2%	Rank history: #44 in FY2021, #40 in FY2022, #46 in FY2023 and #48 in FY2024; unchanged since FY2024.
49	City of Salem Top agencies VA (Department of Veterans Affairs)	$93,845	0.2%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2024; unchanged since FY2024.
50	Alliance Solutions Group, Inc. Top agencies DHA (Defense Health Agency)	$93,741	0.2%	Rank history: #30 in FY2021, #37 in FY2022, #40 in FY2023 and #46 in FY2024; down 4 since FY2024.
51	Patterson Professional Services LLC Top agencies USAF (Department of the Air Force)	$90,338	0.2%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2024; down 9 since FY2024.
52	Institute of Global Environment, Korea Top agencies Army (Department of the Army)	$89,670	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
53	Geoanalytical Laboratories, Inc. Top agencies DLA (Defense Logistics Agency)	$87,690	0.2%	Rank history: #58 in FY2021, #50 in FY2022, #64 in FY2023 and #68 in FY2024; up 15 since FY2024.
54	Aquatomic Products Co Inc. Top agencies OPM (Office of Personnel Management)	$87,256	0.2%	Rank history: not on the FY2021–FY2024 lists; up 60 since FY2024.
55	Ronielle Howard & Associates LLC Top agencies Army (Department of the Army)	$84,664	0.2%	Rank history: #52 in FY2021, #47 in FY2022, #53 in FY2023 and #58 in FY2024; up 3 since FY2024.
56	Vision Research Group LLC Top agencies Navy (Department of the Navy)	$81,500	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
57	Eurofins EAG Agroscience LLC 2 awardees, including Eurofins Lancaster Laboratories LLC and Eurofins Environment Testing South Central, LLC Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture) DHA (Defense Health Agency)	$79,986	0.2%	Rank history: not on the FY2021–FY2023 lists and #43 in FY2024; down 14 since FY2024.
58	Environmental Science Corporation 2 awardees Top agencies Navy (Department of the Navy) Army (Department of the Army)	$78,805	0.2%	Rank history: not on the FY2021 list, #12 in FY2022, #29 in FY2023 and not on the FY2024 list; returned.
59	Paleowest LLC Top agencies Army (Department of the Army)	$76,518	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
60	Jackson Ryan Construction Services, Inc. Top agencies VA (Department of Veterans Affairs)	$74,400	0.1%	Rank history: not on the FY2021 list, #49 in FY2022, #54 in FY2023 and #91 in FY2024; up 31 since FY2024.
61	Guillermo Landeros Top agencies DOI (Department of the Interior)	$72,000	0.1%	Rank history: #77 in FY2021, not on the FY2022–FY2023 lists and #94 in FY2024; up 33 since FY2024.
62	Ksis Corporation Top agencies Army (Department of the Army)	$71,739	0.1%	Rank history: not on the FY2021–FY2023 lists and #73 in FY2024; up 11 since FY2024.
63	WSP E&Is GMBH Top agencies Army (Department of the Army)	$70,174	0.1%	Rank history: not on the FY2021–FY2023 lists and #69 in FY2024; up 6 since FY2024.
64	NCH Corporation Through Chem-Aqua Inc. Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture)	$68,128	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
65	Clarity Water Technologies LLC Top agencies VA (Department of Veterans Affairs)	$67,699	0.1%	Rank history: not on the FY2021–FY2022 lists, #25 in FY2023 and #60 in FY2024; down 5 since FY2024.
66	Pace Analytical Services LLC Top agencies DOI (Department of the Interior) Army (Department of the Army)	$61,695	0.1%	Rank history: not on the FY2021–FY2023 lists and #51 in FY2024; down 15 since FY2024.
67	Nancy Miller Top agencies DOI (Department of the Interior)	$60,662	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
68	CT Laboratories, LLC Top agencies Army (Department of the Army)	$60,480	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
69	Willbanks Environmental Consulting, Inc. Top agencies VA (Department of Veterans Affairs)	$59,300	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
70	Fidelis Sustainability Distribution LLC Top agencies VA (Department of Veterans Affairs)	$57,435	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
71	Utility Services, Inc. Top agencies DOI (Department of the Interior)	$56,725	0.1%	Rank history: not on the FY2021–FY2022 lists, #55 in FY2023 and #81 in FY2024; up 10 since FY2024.
72	Kyle Mountain Fire LLC Top agencies DOI (Department of the Interior) USAF (Department of the Air Force)	$56,331	0.1%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023 and #64 in FY2024; down 8 since FY2024.
73	Fluid Handling LLC 2 awardees, including Evoqua Water Technologies LLC Top agencies VA (Department of Veterans Affairs)	$55,028	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
74	Charlie Pepper AZ, Inc. Top agencies VA (Department of Veterans Affairs)	$52,938	0.1%	Rank history: not on the FY2021 list, #62 in FY2022, #95 in FY2023 and #78 in FY2024; up 4 since FY2024.
75	Oilfield Environmental & Compliance, Inc. Top agencies Army (Department of the Army)	$51,907	0.1%	Rank history: not on the FY2021–FY2023 lists and #88 in FY2024; up 13 since FY2024.
76	The Cadmus Group LLC Top agencies HHS (Department of Health and Human Services)	$51,749	0.1%	Rank history: not on the FY2021 list, #59 in FY2022, #72 in FY2023 and #79 in FY2024; up 3 since FY2024.
77	Garratt-Callahan Company Top agencies VA (Department of Veterans Affairs)	$51,435	0.1%	Rank history: #84 in FY2021, #70 in FY2022, #91 in FY2023 and #82 in FY2024; up 5 since FY2024.
78	Mchenry, Luke Top agencies DOI (Department of the Interior)	$50,400	0.1%	Rank history: not on the FY2021 list, #60 in FY2022, #73 in FY2023 and #63 in FY2024; down 15 since FY2024.
79	Benjamin Miller Top agencies USDA (Department of Agriculture)	$49,000	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
80	Water Quality Specialists Top agencies DOI (Department of the Interior)	$48,852	0.1%	Rank history: not on the FY2021–FY2022 lists, #78 in FY2023 and #84 in FY2024; up 4 since FY2024.
81	Enviro Chem Analytical Inc. Top agencies DOI (Department of the Interior)	$45,305	0.1%	Rank history: #82 in FY2021, #80 in FY2022, #88 in FY2023 and #100 in FY2024; up 19 since FY2024.
82	Barclay Water Management, Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice)	$44,520	0.1%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2024; down 55 since FY2024.
83	Bear Environmental LLC Top agencies USAF (Department of the Air Force)	$41,596	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
84	Virginia Water Systems, Inc. Top agencies VA (Department of Veterans Affairs)	$40,629	0.1%	Rank history: not on the FY2021–FY2024 lists; up 45 since FY2024.
85	Aqua-Serv Engineers, Inc. Top agencies USAF (Department of the Air Force)	$37,112	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
86	Water Management Laboratories Inc. Top agencies DOI (Department of the Interior)	$36,000	0.1%	Rank history: #87 in FY2021, #90 in FY2022, #90 in FY2023 and not on the FY2024 list; up 15 since FY2024.
87	Analytical Services Corporation Top agencies USAF (Department of the Air Force)	$33,115	0.1%	Rank history: not on the FY2021–FY2023 lists and #92 in FY2024; up 5 since FY2024.
88	Environmental Control Center Co., Ltd. Top agencies Army (Department of the Army)	$32,506	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
89	Sijora Enterprises LLC Top agencies Army (Department of the Army)	$32,400	0.1%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2023 and #95 in FY2024; up 6 since FY2024.
90	Southern Petroleum Laboratories Inc. Top agencies Army (Department of the Army)	$32,260	0.1%	Rank history: not on the FY2021–FY2023 lists and #96 in FY2024; up 6 since FY2024.
91	Environmental Quality, Inc. Top agencies VA (Department of Veterans Affairs)	$32,131	0.1%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2023 and not on the FY2024 list; up 12 since FY2024.
92	Western Water Consultants Inc. Top agencies DOI (Department of the Interior)	$32,000	0.1%	Rank history: not on the FY2021–FY2024 lists; up 12 since FY2024.
93	Hejab A Al Soyan Top agencies Army (Department of the Army)	$30,720	0.1%	Rank history: #81 in FY2021, #79 in FY2022, #87 in FY2023 and not on the FY2024 list; up 19 since FY2024.
94	Marvel Water LLC Top agencies DHA (Defense Health Agency)	$30,283	0.1%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2023 and not on the FY2024 list; returned.
95	Forus Contracting, Inc. Top agencies Navy (Department of the Navy)	$29,522	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
96	WSP USA Environment & Infrastructure Inc. Top agencies DOI (Department of the Interior)	$28,746	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
97	Gaylon Duane Johnson LLC Top agencies DLA (Defense Logistics Agency)	$28,388	0.1%	Rank history: not on the FY2021–FY2024 lists; up 8 since FY2024.
98	D & D Laboratory LLC Top agencies VA (Department of Veterans Affairs)	$27,226	0.1%	Rank history: #60 in FY2021, #52 in FY2022, #49 in FY2023 and #55 in FY2024; down 43 since FY2024.
99	Vermejo Conservancy District Top agencies DOI (Department of the Interior)	$25,964	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
100	Aquatech Compliance Services LLC Top agencies Army (Department of the Army)	$25,546	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 8 since FY2024.

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100 of 172 contractors listed here. See the rest on GovTribe.

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $51.3 million obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2025 ran Oct 1, 2024 – Sep 30, 2025. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2024. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2024 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 PSC F103 contractors in FY2025?

1. Seaon Environmental LLC ($11.6M), 2. Sun Coast Resources Inc. ($4.69M), 3. Meadows Cmpg, Inc. ($2.55M), 4. Koman Government Solutions LLC ($2.38M), 5. Versar-Envirocon JV ($2.09M), 6. Potomac Environmental Inc. ($1.96M), 7. Association of Consultants and Engineers ($1.36M), 8. Stewart Brothers Drilling Company ($1.32M), 9. Ecolab Inc. ($1.26M), 10. Venergy Group LLC ($1.06M).

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