Top 100 Contractors in NAICS 22132: Sewage Treatment Facilities, Jul 2025–Jun 2026

Name: Top 100 Contractors in NAICS 22132: Sewage Treatment Facilities, Jul 2025–Jun 2026
Creator: GovTribe

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 72% of NAICS 22132 contract dollars from July 2025 through June 2026

Contract obligations: $265,476,994 Net of deobligations, by contracts coded NAICS 22132 or a code under it
Contractors: 159 Parent companies with an obligation
Largest contractor: Veolia Water West Operating Services Inc. $51.6 million, 19.2% 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	Veolia Water West Operating Services Inc. Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$51,646,513	19.2%	Rank history: not on the FY2021–FY2023 lists, #4 in FY2024 and #1 in FY2025; up 5 since Jul 2024–Jun 2025.
2	Aqua Engineers Inc. Top agencies Army (Department of the Army)	$29,394,464	10.9%	Rank history: #1 in FY2021, #2 in FY2022, #1 in FY2023, #2 in FY2024 and #2 in FY2025; up 1 since Jul 2024–Jun 2025.
3	Foreign Utility Consolidated Reporting Top agencies Army (Department of the Army)	$21,604,578	8.0%	Rank history: #4 in FY2021, #4 in FY2022, #5 in FY2023, #6 in FY2024 and #6 in FY2025; up 1 since Jul 2024–Jun 2025.
4	Sunstate Environmental Services Inc. Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$17,520,666	6.5%	Rank history: not on the FY2021–FY2024 lists and #4 in FY2025; new, not ranked in Jul 2024–Jun 2025.
5	American Water Works Company Inc. Through American Water Military Services, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$16,846,435	6.3%	Rank history: #3 in FY2021, #1 in FY2022, #3 in FY2023, #1 in FY2024 and #3 in FY2025; down 4 since Jul 2024–Jun 2025.
6	Fort Bliss Water Services Company 2 awardees, including Old Dominion Utility Services, Inc. and American States Utility Services Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$16,598,493	6.2%	Rank history: not on the FY2021–FY2023 lists, #3 in FY2024 and #5 in FY2025; down 4 since Jul 2024–Jun 2025.
7	Nikken Sogyo Co., Ltd. Top agencies Navy (Department of the Navy)	$13,237,604	4.9%	Rank history: #5 in FY2021, #7 in FY2022, #6 in FY2023, #7 in FY2024 and #7 in FY2025; down 2 since Jul 2024–Jun 2025.
8	Bairco Construction Inc. Top agencies DOI (Department of the Interior)	$11,628,532	4.3%	Rank history: not on the FY2021–FY2024 lists and #8 in FY2025; new, not ranked in Jul 2024–Jun 2025.
9	City of Aberdeen Top agencies Army (Department of the Army)	$9,340,028	3.5%	Rank history: #7 in FY2021, #8 in FY2022, #7 in FY2023, #5 in FY2024 and #10 in FY2025; down 2 since Jul 2024–Jun 2025.
10	South Granville Water & Sewer Auth Top agencies DOJ (Department of Justice)	$5,806,262	2.2%	Rank history: #11 in FY2021, #11 in FY2022, #11 in FY2023, #13 in FY2024 and #12 in FY2025; up 3 since Jul 2024–Jun 2025.
11	Riverbend Water Resources District Top agencies Army (Department of the Army)	$4,958,000	1.8%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
12	Nikken-Metawater JV Top agencies Navy (Department of the Navy)	$4,845,757	1.8%	Rank history: not on the FY2021–FY2022 lists, #10 in FY2023, #14 in FY2024 and #13 in FY2025; down 1 since Jul 2024–Jun 2025.
13	Tama City Hall Top agencies USAF (Department of the Air Force)	$4,748,901	1.8%	Rank history: not on the FY2021 list, #6 in FY2022, #8 in FY2023, #10 in FY2024 and #11 in FY2025; down 4 since Jul 2024–Jun 2025.
14	KLJ Services LLC Top agencies Navy (Department of the Navy)	$4,494,085	1.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
15	Florida Keys Aqueduct Authority Top agencies Navy (Department of the Navy)	$3,970,848	1.5%	Rank history: not on the FY2021–FY2023 lists, #53 in FY2024 and #16 in FY2025; down 1 since Jul 2024–Jun 2025.
16	Harnett, County of North Carolina Top agencies Army (Department of the Army)	$3,955,476	1.5%	Rank history: #13 in FY2021, #20 in FY2022, #14 in FY2023, #17 in FY2024 and #17 in FY2025; unchanged since Jul 2024–Jun 2025.
17	P D R Properties, Inc. Top agencies Army (Department of the Army)	$3,667,346	1.4%	Rank history: not on the FY2021–FY2023 lists, #11 in FY2024 and #14 in FY2025; down 5 since Jul 2024–Jun 2025.
18	Municipality of Anchorage Top agencies USAF (Department of the Air Force)	$2,758,035	1.0%	Rank history: #18 in FY2021, #12 in FY2022, #13 in FY2023, #16 in FY2024 and #15 in FY2025; down 8 since Jul 2024–Jun 2025.
19	City of Hopewell Hrwtf Top agencies DOJ (Department of Justice)	$2,742,638	1.0%	Rank history: not on the FY2021–FY2023 lists, #31 in FY2024 and #20 in FY2025; up 2 since Jul 2024–Jun 2025.
20	Bartow County Government Top agencies Army (Department of the Army)	$2,593,360	1.0%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
21	Optech-Monette, LLC Top agencies USAF (Department of the Air Force)	$1,925,743	0.7%	Rank history: #14 in FY2021, #13 in FY2022, #12 in FY2023, #15 in FY2024 and #18 in FY2025; down 6 since Jul 2024–Jun 2025.
22	Perc Water Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$1,490,597	0.6%	Rank history: #9 in FY2021, #9 in FY2022, #9 in FY2023, #9 in FY2024 and #9 in FY2025; down 14 since Jul 2024–Jun 2025.
23	Crico Enterprise, LLC Top agencies Army (Department of the Army)	$1,441,578	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
24	Optimum Environmental Corporation Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$1,440,839	0.5%	Rank history: #50 in FY2021, #53 in FY2022, #37 in FY2023, #30 in FY2024 and #19 in FY2025; up 2 since Jul 2024–Jun 2025.
25	Project Solutions, Inc. Top agencies USAF (Department of the Air Force) USDA (Department of Agriculture)	$1,348,329	0.5%	Rank history: #52 in FY2021, #43 in FY2022, #31 in FY2023, #29 in FY2024 and #34 in FY2025; up 17 since Jul 2024–Jun 2025.
26	County of Lee Top agencies DOJ (Department of Justice)	$1,347,930	0.5%	Rank history: not on the FY2021–FY2024 lists and #23 in FY2025; up 4 since Jul 2024–Jun 2025.
27	C-A Native Constructors Inc. Top agencies Army (Department of the Army)	$1,305,863	0.5%	Rank history: not on the FY2021–FY2024 lists and #22 in FY2025; new, not ranked in Jul 2024–Jun 2025.
28	City of Leavenworth KS Top agencies Army (Department of the Army)	$1,223,687	0.5%	Rank history: #35 in FY2021, #28 in FY2022, #32 in FY2023, #28 in FY2024 and #25 in FY2025; unchanged since Jul 2024–Jun 2025.
29	Village of Saranac Lake Top agencies DOJ (Department of Justice)	$1,176,034	0.4%	Rank history: #31 in FY2021, #26 in FY2022, #23 in FY2023, #27 in FY2024 and #26 in FY2025; down 5 since Jul 2024–Jun 2025.
30	Herlong Public Utility District Top agencies DOJ (Department of Justice) Army (Department of the Army)	$1,091,670	0.4%	Rank history: #41 in FY2021, not on the FY2022 list, #75 in FY2023, #38 in FY2024 and #31 in FY2025; up 2 since Jul 2024–Jun 2025.
31	Town of North Hempstead Top agencies DOT (Department of Transportation)	$1,072,113	0.4%	Rank history: not on the FY2021–FY2024 lists and #24 in FY2025; down 8 since Jul 2024–Jun 2025.
32	Lafayette Township Top agencies DOJ (Department of Justice)	$1,057,538	0.4%	Rank history: #54 in FY2021, #40 in FY2022, #36 in FY2023, #34 in FY2024 and #32 in FY2025; up 1 since Jul 2024–Jun 2025.
33	Paintsville Utilities Commission Top agencies DOJ (Department of Justice)	$972,870	0.4%	Rank history: #94 in FY2021, not on the FY2022–FY2023 lists, #39 in FY2024 and #35 in FY2025; up 5 since Jul 2024–Jun 2025.
34	Waymart Area Authority Top agencies DOJ (Department of Justice)	$826,155	0.3%	Rank history: not on the FY2021–FY2023 lists, #43 in FY2024 and #39 in FY2025; up 2 since Jul 2024–Jun 2025.
35	City of Pekin Top agencies DOJ (Department of Justice)	$820,961	0.3%	Rank history: #42 in FY2021, #42 in FY2022, #40 in FY2023, #41 in FY2024 and #30 in FY2025; down 8 since Jul 2024–Jun 2025.
36	Kent County Government Top agencies USAF (Department of the Air Force)	$673,506	0.3%	Rank history: #57 in FY2021, #51 in FY2022, #47 in FY2023, #40 in FY2024 and #37 in FY2025; down 5 since Jul 2024–Jun 2025.
37	DCS Infrastructure, LLC Top agencies VA (Department of Veterans Affairs)	$671,144	0.2%	Rank history: #19 in FY2021, #18 in FY2022, #20 in FY2023, #20 in FY2024 and #28 in FY2025; down 12 since Jul 2024–Jun 2025.
38	San Antonio River Authority Top agencies USAF (Department of the Air Force)	$636,187	0.2%	Rank history: #26 in FY2021, #25 in FY2022, #19 in FY2023, #37 in FY2024 and #33 in FY2025; down 9 since Jul 2024–Jun 2025.
39	Fremont Sanitation District Top agencies DOJ (Department of Justice)	$613,091	0.2%	Rank history: #48 in FY2021, #39 in FY2022, not on the FY2023 list, #35 in FY2024 and #36 in FY2025; up 7 since Jul 2024–Jun 2025.
40	Al Musairie Trading & Contracting Company -Qatar Top agencies USAF (Department of the Air Force)	$462,240	0.2%	Rank history: not on the FY2021–FY2024 lists and #40 in FY2025; down 3 since Jul 2024–Jun 2025.
41	Gregg Township Municipal Authority Top agencies DOJ (Department of Justice)	$458,417	0.2%	Rank history: #30 in FY2021, #33 in FY2022, #24 in FY2023, #24 in FY2024 and #27 in FY2025; down 19 since Jul 2024–Jun 2025.
42	Lowndes County Board of Commissioners Top agencies USAF (Department of the Air Force)	$446,066	0.2%	Rank history: #59 in FY2021, #54 in FY2022, #45 in FY2023, #21 in FY2024 and #29 in FY2025; down 24 since Jul 2024–Jun 2025.
43	Low Country Water Services, LLC Top agencies USAF (Department of the Air Force)	$429,944	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
44	Schwarz Construction LLC Top agencies Army (Department of the Army)	$400,000	0.1%	Rank history: not on the FY2021–FY2022 lists, #18 in FY2023, #19 in FY2024 and #21 in FY2025; down 27 since Jul 2024–Jun 2025.
45	Waterworkforce Inc. Top agencies USDA (Department of Agriculture)	$384,223	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
46	Cayuse Federal Services LLC Top agencies Navy (Department of the Navy)	$358,983	0.1%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; down 3 since Jul 2024–Jun 2025.
47	Sarandrea Associates Group Corp Top agencies USAF (Department of the Air Force)	$342,936	0.1%	Rank history: not on the FY2021–FY2023 lists, #66 in FY2024 and #46 in FY2025; unchanged since Jul 2024–Jun 2025.
48	Pacific Northwest Environmental Services LLC Top agencies USDA (Department of Agriculture)	$339,572	0.1%	Rank history: #74 in FY2021, #72 in FY2022, #59 in FY2023, #50 in FY2024 and #53 in FY2025; new, not ranked in Jul 2024–Jun 2025.
49	Sociedade De Empreitadas E Trabalhos Hidraulicos, S.A. Top agencies USAF (Department of the Air Force)	$338,881	0.1%	Rank history: not on the FY2021–FY2023 lists, #49 in FY2024 and #45 in FY2025; down 5 since Jul 2024–Jun 2025.
50	Nsp-Bch, LLC Top agencies USAF (Department of the Air Force)	$334,757	0.1%	Rank history: not on the FY2021–FY2022 lists, #61 in FY2023, #51 in FY2024 and #47 in FY2025; up 3 since Jul 2024–Jun 2025.
51	Water Management Services, Inc. Top agencies VA (Department of Veterans Affairs)	$306,540	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
52	Illinois-American Water Company Top agencies DOJ (Department of Justice)	$295,806	0.1%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; up 20 since Jul 2024–Jun 2025.
53	City of Manchester Top agencies DOJ (Department of Justice)	$287,810	0.1%	Rank history: not on the FY2021 list, #55 in FY2022, #60 in FY2023, #47 in FY2024 and #58 in FY2025; down 8 since Jul 2024–Jun 2025.
54	Nicklaus Engineering, Inc. Top agencies Army (Department of the Army)	$266,123	0.1%	Rank history: #62 in FY2021, #67 in FY2022, #84 in FY2023, #52 in FY2024 and #70 in FY2025; up 13 since Jul 2024–Jun 2025.
55	Hennesy Mechanical Sales LLC Top agencies DOI (Department of the Interior)	$263,369	0.1%	Rank history: not on the FY2021–FY2024 lists and #54 in FY2025; new, not ranked in Jul 2024–Jun 2025.
56	City of Alexandria Virginia Sanitation Authority Top agencies WHS (DOD Washington Headquarters Service)	$257,933	0.1%	Rank history: #75 in FY2021, not on the FY2022 list, #72 in FY2023, #80 in FY2024 and #56 in FY2025; unchanged since Jul 2024–Jun 2025.
57	Gotemba Eiseisha, Co. Ltd. Top agencies Navy (Department of the Navy)	$226,533	0.1%	Rank history: #71 in FY2021, #63 in FY2022, #64 in FY2023, #56 in FY2024 and #57 in FY2025; up 1 since Jul 2024–Jun 2025.
58	A&G Septic and Grease LLC Top agencies DOJ (Department of Justice)	$215,849	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
59	City of Anadarko City Hall Top agencies DOI (Department of the Interior)	$201,517	0.1%	Rank history: not on the FY2021 list, #87 in FY2022, #92 in FY2023, #42 in FY2024 and #55 in FY2025; down 10 since Jul 2024–Jun 2025.
60	Southwest Fluid Systems, LLC Top agencies DOJ (Department of Justice)	$192,210	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
61	White Mountain Apache Tribe Top agencies HHS (Department of Health and Human Services)	$176,351	0.1%	Rank history: #86 in FY2021, not on the FY2022–FY2023 lists, #68 in FY2024 and #83 in FY2025; up 26 since Jul 2024–Jun 2025.
62	Preston County Public Service District Top agencies DOJ (Department of Justice)	$174,460	0.1%	Rank history: #58 in FY2021, #49 in FY2022, #74 in FY2023, #36 in FY2024 and #41 in FY2025; down 7 since Jul 2024–Jun 2025.
63	Kankyo Gijutsu KK Top agencies USAF (Department of the Air Force)	$170,399	0.1%	Rank history: #79 in FY2021, #71 in FY2022, #66 in FY2023, #62 in FY2024 and #63 in FY2025; down 2 since Jul 2024–Jun 2025.
64	Sankyo Denki Koji Co.,Ltd. Top agencies Navy (Department of the Navy)	$167,430	0.1%	Rank history: #88 in FY2021, #81 in FY2022, not on the FY2023–FY2024 lists and #66 in FY2025; new, not ranked in Jul 2024–Jun 2025.
65	Fineeco Top agencies Army (Department of the Army)	$158,753	0.1%	Rank history: not on the FY2021–FY2024 lists and #60 in FY2025; up 19 since Jul 2024–Jun 2025.
66	Schwandorfer Umwelttechnik GMBH Top agencies Army (Department of the Army)	$156,079	0.1%	Rank history: not on the FY2021–FY2022 lists, #93 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
67	City of Berlin Top agencies DOJ (Department of Justice)	$151,500	0.1%	Rank history: not on the FY2021–FY2023 lists, #45 in FY2024 and #38 in FY2025; down 32 since Jul 2024–Jun 2025.
68	Urban Construction Bureau, Sagamihara City Top agencies Army (Department of the Army)	$145,182	0.1%	Rank history: not on the FY2021 list, #76 in FY2022, #77 in FY2023, #65 in FY2024 and #65 in FY2025; down 5 since Jul 2024–Jun 2025.
69	Denver Board of Water Commissioners Top agencies Treasury (Department of the Treasury)	$142,535	0.1%	Rank history: not on the FY2021 list, #78 in FY2022, #76 in FY2023, #60 in FY2024 and #78 in FY2025; up 9 since Jul 2024–Jun 2025.
70	Comp Environmental Inc. 2 awardees Top agencies Navy (Department of the Navy)	$141,252	0.1%	Rank history: not on the FY2021–FY2023 lists, #83 in FY2024 and #82 in FY2025; up 50 since Jul 2024–Jun 2025.
71	B & M Technical Services, Inc. Top agencies DOJ (Department of Justice)	$125,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #71 in FY2025; new, not ranked in Jul 2024–Jun 2025.
72	K.i. Kogyo Ltd. Top agencies Navy (Department of the Navy)	$109,185	<0.1%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2023, not on the FY2024 list and #61 in FY2025; down 12 since Jul 2024–Jun 2025.
73	South Park Township Top agencies HHS (Department of Health and Human Services) DOE (Department of Energy)	$108,265	<0.1%	Rank history: #99 in FY2021, not on the FY2022 list, #95 in FY2023, #87 in FY2024 and not on the FY2025 list; up 29 since Jul 2024–Jun 2025.
74	Rockaway Valley Reg Sewer Auth Top agencies Army (Department of the Army)	$104,421	<0.1%	Rank history: #84 in FY2021, #84 in FY2022, #85 in FY2023, #61 in FY2024 and #69 in FY2025; down 17 since Jul 2024–Jun 2025.
75	City of Jeffersonville Top agencies Commerce (Department of Commerce)	$102,671	<0.1%	Rank history: not on the FY2021 list, #90 in FY2022, not on the FY2023 list, #98 in FY2024 and #76 in FY2025; down 6 since Jul 2024–Jun 2025.
76	Gwendolyn C. Hill Top agencies Army (Department of the Army)	$99,800	<0.1%	Rank history: not on the FY2021 list, #94 in FY2022, #96 in FY2023, #79 in FY2024 and #73 in FY2025; new, not ranked in Jul 2024–Jun 2025.
77	OUU Clean Technology K.K. Top agencies USAF (Department of the Air Force)	$99,068	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
78	Bristol Bay Borough Of Top agencies USAF (Department of the Air Force)	$95,000	<0.1%	Rank history: #98 in FY2021, #93 in FY2022, #94 in FY2023, #76 in FY2024 and #74 in FY2025; down 3 since Jul 2024–Jun 2025.
79	M Davidson & Associates Inc. Top agencies Army (Department of the Army)	$94,800	<0.1%	Rank history: not on the FY2021–FY2022 lists, #99 in FY2023, #77 in FY2024 and #72 in FY2025; down 8 since Jul 2024–Jun 2025.
80	DC Water & Sewer Authority Top agencies Treasury (Department of the Treasury)	$89,498	<0.1%	Rank history: not on the FY2021–FY2023 lists, #90 in FY2024 and not on the FY2025 list; up 29 since Jul 2024–Jun 2025.
81	City of Watervliet Top agencies Army (Department of the Army)	$87,853	<0.1%	Rank history: not on the FY2021 list, #62 in FY2022, #79 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
82	Ronielle Howard & Associates LLC Top agencies Army (Department of the Army)	$84,664	<0.1%	Rank history: not on the FY2021–FY2023 lists, #84 in FY2024 and #77 in FY2025; down 2 since Jul 2024–Jun 2025.
83	Schrass GMBH Top agencies USAF (Department of the Air Force)	$83,354	<0.1%	Rank history: #81 in FY2021, #79 in FY2022, #89 in FY2023, #78 in FY2024 and #75 in FY2025; down 15 since Jul 2024–Jun 2025.
84	Pro-Pipe, Inc. Top agencies DOI (Department of the Interior)	$80,431	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
85	Midwest Environmental Management Services, L.L.C. Top agencies Army (Department of the Army)	$79,700	<0.1%	Rank history: not on the FY2021 list, #95 in FY2022, not on the FY2023 list, #67 in FY2024 and not on the FY2025 list; down 3 since Jul 2024–Jun 2025.
86	Miller Environmental Inc. Top agencies DOI (Department of the Interior)	$79,221	<0.1%	Rank history: not on the FY2021 list, #86 in FY2022, not on the FY2023 list, #86 in FY2024 and #80 in FY2025; down 20 since Jul 2024–Jun 2025.
87	Nabd Alasr Trading and Contracting Company Top agencies DOS (Department of State)	$78,200	<0.1%	Rank history: not on the FY2021–FY2022 lists, #90 in FY2023, #72 in FY2024 and not on the FY2025 list; down 17 since Jul 2024–Jun 2025.
88	Allegheny Site Management, Inc. Top agencies USDA (Department of Agriculture)	$70,796	<0.1%	Rank history: not on the FY2021–FY2024 lists and #100 in FY2025; new, not ranked in Jul 2024–Jun 2025.
89	Maryland Environmental Service Top agencies Smithsonian (Smithsonian Institution)	$69,223	<0.1%	Rank history: not on the FY2021–FY2023 lists, #69 in FY2024 and #43 in FY2025; down 50 since Jul 2024–Jun 2025.
90	PPD Development LP Through Thermo Electron North America LLC Top agencies Army (Department of the Army)	$66,941	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
91	Binary Exchange Technologies LLC Top agencies Army (Department of the Army)	$65,026	<0.1%	Rank history: not on the FY2021–FY2024 lists and #85 in FY2025; new, not ranked in Jul 2024–Jun 2025.
92	ATZ Solution LLC Top agencies Army (Department of the Army)	$64,920	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
93	GPC Consolidated Reporting Top agencies USDA (Department of Agriculture)	$64,419	<0.1%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; up 40 since Jul 2024–Jun 2025.
94	Sulzer AG Through JWC Environmental Inc. Top agencies DOJ (Department of Justice)	$61,168	<0.1%	Rank history: not on the FY2021–FY2023 lists, #94 in FY2024 and #88 in FY2025; down 2 since Jul 2024–Jun 2025.
95	Kokowski Plumbing LLC Top agencies VA (Department of Veterans Affairs)	$60,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
96	Automation Group Inc. Top agencies Army (Department of the Army)	$59,472	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 15 since Jul 2024–Jun 2025.
97	Fluid Solutions LLC Top agencies DOS (Department of State)	$59,130	<0.1%	Rank history: not on the FY2021–FY2023 lists, #75 in FY2024 and not on the FY2025 list; down 9 since Jul 2024–Jun 2025.
98	Environmental Systems Service, Ltd. Top agencies DHS (Department of Homeland Security)	$57,202	<0.1%	Rank history: not on the FY2021–FY2023 lists, #92 in FY2024 and #91 in FY2025; down 5 since Jul 2024–Jun 2025.
99	Chubu Kamikita Seiso Co., Ltd. Top agencies USAF (Department of the Air Force)	$54,152	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 13 since Jul 2024–Jun 2025.
100	Nihon Highway Service Co.,Ltd. Top agencies Army (Department of the Army)	$53,523	<0.1%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; new, not ranked in Jul 2024–Jun 2025.

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100 of 159 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 22132

Code	Net obligations	Largest contractor
221320 Sewage Treatment Facilities	$265,476,994	Veolia Water West Operating Services Inc.

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 $269 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.
Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
Rank changes compare with Jul 2024–Jun 2025. "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.
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 NAICS 22132 contractors in Jul 2025–Jun 2026?

1. Veolia Water West Operating Services Inc. ($51.6M), 2. Aqua Engineers Inc. ($29.4M), 3. Foreign Utility Consolidated Reporting ($21.6M), 4. Sunstate Environmental Services Inc. ($17.5M), 5. American Water Works Company Inc. ($16.8M), 6. Fort Bliss Water Services Company ($16.6M), 7. Nikken Sogyo Co., Ltd. ($13.2M), 8. Bairco Construction Inc. ($11.6M), 9. City of Aberdeen ($9.34M), 10. South Granville Water & Sewer Auth ($5.81M).

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