Top 100 Contractors in NAICS 22131: Water Supply and Irrigation Systems, FY2022

Name: Top 100 Contractors in NAICS 22131: Water Supply and Irrigation Systems, FY2022
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2021 – Sep 30, 2022 Code page on GovTribe

The top 10 won 62% of FY2022 NAICS 22131 contract dollars

Contract obligations: $543,325,373 Net of deobligations, by contracts coded NAICS 22131 or a code under it
Contractors: 646 Parent companies with an obligation
Largest contractor: American Water Works Company Inc. $173 million, 30.7% 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	American Water Works Company Inc. 10 awardees, including American Water Operations and Maintenance, LLC, American Water Military Services, LLC and Pennsylvania - American Water Company Top agencies Army (Department of the Army) USAF (Department of the Air Force) DOJ (Department of Justice)	$172,708,479	30.7%	Rank history: #1 in FY2021, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since FY2021.
2	Old North Utility Services Inc. 5 awardees, including Fort Bliss Water Services Company, Terrapin Utility Services, Inc. and Palmetto State Utility Services, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$59,400,457	10.5%	Rank history: #2 in FY2021, #2 in FY2023, #6 in FY2024 and not on the FY2025 list; unchanged since FY2021.
3	Fort Riley Utility Services, Inc. Top agencies Army (Department of the Army)	$18,395,293	3.3%	Rank history: #5 in FY2021, #4 in FY2023, #5 in FY2024 and #11 in FY2025; up 2 since FY2021.
4	Jacobs Engineering Group Inc. 2 awardees, including Ch2M Hill Constructors, Inc. and Jacobs Project Management Co Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$17,745,346	3.2%	Rank history: #4 in FY2021, #9 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2021.
5	Emerald Coast Utility Services Inc. Top agencies USAF (Department of the Air Force)	$16,471,196	2.9%	Rank history: #6 in FY2021, #5 in FY2023, #7 in FY2024 and #9 in FY2025; up 1 since FY2021.
6	American Water Enterprises, LLC Top agencies Army (Department of the Army)	$14,851,991	2.6%	Rank history: #3 in FY2021, #8 in FY2023, #10 in FY2024 and #12 in FY2025; down 3 since FY2021.
7	Washington Suburban Sanitary Commission Top agencies HHS (Department of Health and Human Services) Smithsonian (Smithsonian Institution) NASA (National Aeronautics and Space Administration)	$14,474,194	2.6%	Rank history: #9 in FY2021, #7 in FY2023, #8 in FY2024 and #10 in FY2025; up 2 since FY2021.
8	Augusta-Richmond County Government Top agencies Army (Department of the Army)	$13,797,264	2.5%	Rank history: #10 in FY2021, #13 in FY2023, #9 in FY2024 and #7 in FY2025; up 2 since FY2021.
9	Base Utilities Inc. Top agencies USAF (Department of the Air Force)	$11,865,123	2.1%	Rank history: #7 in FY2021, #10 in FY2023, #11 in FY2024 and #14 in FY2025; down 2 since FY2021.
10	Oklahoma City Water Utilities Trust Top agencies USAF (Department of the Air Force)	$11,179,046	2.0%	Rank history: not on the FY2021 list, #3 in FY2023, #3 in FY2024 and #5 in FY2025; up 205 since FY2021.
11	Florida Governmental Utility Authority Top agencies USAF (Department of the Air Force)	$9,379,470	1.7%	Rank history: #8 in FY2021, #16 in FY2023, #16 in FY2024 and not on the FY2025 list; down 3 since FY2021.
12	Foreign Utility Consolidated Reporting Top agencies Army (Department of the Army) Smithsonian (Smithsonian Institution)	$9,084,819	1.6%	Rank history: #13 in FY2021, #12 in FY2023, #12 in FY2024 and #15 in FY2025; up 1 since FY2021.
13	Ch2M Hill Constructors, Inc. Top agencies Army (Department of the Army)	$7,826,440	1.4%	Rank history: #75 in FY2021, #48 in FY2023 and not on the FY2024–FY2025 lists; up 62 since FY2021.
14	Fort Bliss Water Services Company 2 awardees Top agencies Army (Department of the Army)	$7,025,964	1.2%	Rank history: not on the FY2021 list, #6 in FY2023, #2 in FY2024 and #2 in FY2025; new.
15	Riverbend Water Resources District Top agencies Army (Department of the Army)	$5,416,069	1.0%	Rank history: #19 in FY2021, #17 in FY2023, #13 in FY2024 and #16 in FY2025; up 4 since FY2021.
16	Central Coast Water Authority Top agencies USAF (Department of the Air Force)	$5,022,216	0.9%	Rank history: #15 in FY2021, #15 in FY2023, #14 in FY2024 and #18 in FY2025; down 1 since FY2021.
17	Chemonics International, Inc. Top agencies USAID (US Agency for International Development)	$4,600,000	0.8%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
18	Hardin County Water District NO. 1 Top agencies Army (Department of the Army)	$4,455,906	0.8%	Rank history: #17 in FY2021, #19 in FY2023, #23 in FY2024 and not on the FY2025 list; down 1 since FY2021.
19	County of Miami-Dade Through Miami-Dade Water & Sewer Dept Top agencies DOJ (Department of Justice) Army (Department of the Army)	$4,271,120	0.8%	Rank history: #21 in FY2021, #43 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2021.
20	Pural Water Specialty Co. , Inc. Top agencies Army (Department of the Army)	$3,928,540	0.7%	Rank history: #14 in FY2021, #14 in FY2023, #18 in FY2024 and #26 in FY2025; down 6 since FY2021.
21	Antelope Valley East Kern Water Agency Top agencies USAF (Department of the Air Force)	$3,564,117	0.6%	Rank history: #22 in FY2021, #21 in FY2023, #22 in FY2024 and #28 in FY2025; up 1 since FY2021.
22	Pyeongtaek-Si Water and Sewage Business Place Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$3,513,897	0.6%	Rank history: #16 in FY2021, #25 in FY2023, #25 in FY2024 and #22 in FY2025; down 6 since FY2021.
23	Fayetteville City of Through Fayetteville Public Works Commission Top agencies Army (Department of the Army)	$2,753,203	0.5%	Rank history: #25 in FY2021, #26 in FY2023, #26 in FY2024 and not on the FY2025 list; up 2 since FY2021.
24	Bairco Construction Inc. Top agencies DOI (Department of the Interior)	$2,631,050	0.5%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
25	City of Atlanta Top agencies DOJ (Department of Justice)	$2,610,004	0.5%	Rank history: #20 in FY2021, #97 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2021.
26	Jungbu Water Supply Office Top agencies Army (Department of the Army)	$2,428,787	0.4%	Rank history: #27 in FY2021, #31 in FY2023, #32 in FY2024 and #34 in FY2025; up 1 since FY2021.
27	City of Wildwood City Hall Top agencies DOJ (Department of Justice)	$2,394,127	0.4%	Rank history: #28 in FY2021, #33 in FY2023, #27 in FY2024 and #24 in FY2025; up 1 since FY2021.
28	Clean Harbors Inc Through Clean Harbors Environmental Services Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$2,376,572	0.4%	Rank history: not on the FY2021 list, #64 in FY2023 and not on the FY2024–FY2025 lists; new.
29	LOS Angeles City of Through LOS Angeles Department of Water & Power Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice)	$2,334,316	0.4%	Rank history: not on the FY2021 list, #53 in FY2023 and not on the FY2024–FY2025 lists; up 81 since FY2021.
30	Beckley Sanitary Board Top agencies DOJ (Department of Justice)	$2,317,588	0.4%	Rank history: not on the FY2021 list, #28 in FY2023 and not on the FY2024–FY2025 lists; new.
31	City of Florence Top agencies DOJ (Department of Justice)	$2,240,820	0.4%	Rank history: #31 in FY2021, not on the FY2023 list, #29 in FY2024 and #38 in FY2025; unchanged since FY2021.
32	California Water Service Group 2 awardees, including California Water Service Co Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DCMA (Defense Contract Management Agency)	$2,214,648	0.4%	Rank history: #24 in FY2021, #22 in FY2023, #20 in FY2024 and #29 in FY2025; down 8 since FY2021.
33	City of Jacksonville Ar Through City of Jacksonville Top agencies USAF (Department of the Air Force)	$2,161,579	0.4%	Rank history: not on the FY2021 list, #23 in FY2023, #36 in FY2024 and #45 in FY2025; new.
34	Brice Solutions, LLC Top agencies USAF (Department of the Air Force)	$2,134,237	0.4%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
35	Western Municipal Water District of Riverside County Top agencies VA (Department of Veterans Affairs)	$2,050,000	0.4%	Rank history: #34 in FY2021 and not on the FY2023–FY2025 lists; down 1 since FY2021.
36	Raleigh County Public Service District Top agencies DOJ (Department of Justice) DOL (Department of Labor)	$2,029,625	0.4%	Rank history: #33 in FY2021, #36 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2021.
37	Yerba Buena Engineering & Construction, Inc. Top agencies DOI (Department of the Interior)	$1,998,400	0.4%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
38	City of Beaumont Top agencies DOJ (Department of Justice)	$1,920,876	0.3%	Rank history: not on the FY2021 list, #67 in FY2023 and not on the FY2024–FY2025 lists; new.
39	Town of Pollock Top agencies DOJ (Department of Justice)	$1,904,315	0.3%	Rank history: #32 in FY2021, #56 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2021.
40	Northeast Ohio Regional Sewer District Top agencies NASA (National Aeronautics and Space Administration)	$1,851,000	0.3%	Rank history: #30 in FY2021, #30 in FY2023, #30 in FY2024 and #33 in FY2025; down 10 since FY2021.
41	City of Fort Worth Top agencies DOJ (Department of Justice) Treasury (Department of the Treasury)	$1,800,035	0.3%	Rank history: #89 in FY2021, #34 in FY2023 and not on the FY2024–FY2025 lists; up 48 since FY2021.
42	Kyotango City Top agencies Army (Department of the Army)	$1,683,687	0.3%	Rank history: not on the FY2021 list, #46 in FY2023, #41 in FY2024 and #47 in FY2025; new.
43	City of Aliceville Top agencies DOJ (Department of Justice)	$1,469,325	0.3%	Rank history: #37 in FY2021, #35 in FY2023, #33 in FY2024 and #39 in FY2025; down 6 since FY2021.
44	Mccreary County Water District Top agencies DOJ (Department of Justice) USDA (Department of Agriculture)	$1,346,311	0.2%	Rank history: #40 in FY2021, #45 in FY2023 and not on the FY2024–FY2025 lists; down 4 since FY2021.
45	Sheridan City of Through City of Sheridan Top agencies DOJ (Department of Justice)	$1,320,314	0.2%	Rank history: #55 in FY2021, #49 in FY2023 and not on the FY2024–FY2025 lists; up 10 since FY2021.
46	DC Water & Sewer Authority Top agencies Smithsonian (Smithsonian Institution) CFPB (Consumer Financial Protection Bureau) Treasury (Department of the Treasury)	$1,209,712	0.2%	Rank history: #64 in FY2021, #71 in FY2023, #94 in FY2024 and not on the FY2025 list; up 18 since FY2021.
47	City of Cocoa Top agencies NASA (National Aeronautics and Space Administration)	$1,187,112	0.2%	Rank history: #90 in FY2021, #47 in FY2023, #42 in FY2024 and #41 in FY2025; up 43 since FY2021.
48	Public Service Commission of Yazoo City Top agencies DOJ (Department of Justice)	$1,156,510	0.2%	Rank history: #35 in FY2021, #38 in FY2023, #39 in FY2024 and #50 in FY2025; down 13 since FY2021.
49	Edgefield County Water & Sewer Authority Top agencies DOJ (Department of Justice)	$1,129,804	0.2%	Rank history: #50 in FY2021, #50 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2021.
50	City of Victorville Top agencies DOJ (Department of Justice)	$1,101,786	0.2%	Rank history: #83 in FY2021, #58 in FY2023 and not on the FY2024–FY2025 lists; up 33 since FY2021.
51	Gilmer County Public Service District Top agencies DOJ (Department of Justice)	$1,077,350	0.2%	Rank history: #41 in FY2021, #77 in FY2023 and not on the FY2024–FY2025 lists; down 10 since FY2021.
52	Preston County Public Service District NO4 Top agencies DOJ (Department of Justice)	$1,038,583	0.2%	Rank history: #47 in FY2021, #60 in FY2023, #44 in FY2024 and #51 in FY2025; down 5 since FY2021.
53	City of Welch Top agencies DOJ (Department of Justice)	$1,034,922	0.2%	Rank history: #48 in FY2021, #52 in FY2023, #40 in FY2024 and #54 in FY2025; down 5 since FY2021.
54	Evoqua Water Technologies LLC 4 awardees Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy) DHA (Defense Health Agency)	$1,008,919	0.2%	Rank history: #38 in FY2021 and not on the FY2023–FY2025 lists; down 16 since FY2021.
55	Schwarz Construction Llc-K Hayes Limited Joint Venture Top agencies Army (Department of the Army)	$1,003,044	0.2%	Rank history: #42 in FY2021 and not on the FY2023–FY2025 lists; down 13 since FY2021.
56	Morning Dew Landscaping Inc. Top agencies DOI (Department of the Interior)	$989,866	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
57	State of Hawaii 3 awardees, including Board of Water Supply, Agribusiness Development Corporation and Department of Transportation State of Hawaii Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy) DOJ (Department of Justice)	$988,807	0.2%	Rank history: #43 in FY2021, #91 in FY2023, #72 in FY2024 and not on the FY2025 list; down 14 since FY2021.
58	City of Milan Top agencies DOJ (Department of Justice)	$982,805	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
59	City of Danbury CT Top agencies DOJ (Department of Justice)	$946,464	0.2%	Rank history: #39 in FY2021, #61 in FY2023, #50 in FY2024 and #63 in FY2025; down 20 since FY2021.
60	Herlong Public Utility District Top agencies DOJ (Department of Justice) Army (Department of the Army)	$941,622	0.2%	Rank history: not on the FY2021 list, #63 in FY2023, #89 in FY2024 and not on the FY2025 list; up 60 since FY2021.
61	Comp Environmental, Inc. 2 awardees Top agencies DOI (Department of the Interior) Army (Department of the Army)	$906,369	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
62	City of El Reno Top agencies DOJ (Department of Justice)	$890,935	0.2%	Rank history: #62 in FY2021, #68 in FY2023, #47 in FY2024 and #60 in FY2025; unchanged since FY2021.
63	City of Jesup Top agencies DOJ (Department of Justice)	$871,167	0.2%	Rank history: #46 in FY2021, #85 in FY2023 and not on the FY2024–FY2025 lists; down 17 since FY2021.
64	City of Greenville Top agencies DOJ (Department of Justice)	$824,584	0.1%	Rank history: #51 in FY2021, #55 in FY2023, #46 in FY2024 and #76 in FY2025; down 13 since FY2021.
65	Liquitech, Inc. Top agencies VA (Department of Veterans Affairs)	$790,389	0.1%	Rank history: not on the FY2021 list, #88 in FY2023, #86 in FY2024 and #71 in FY2025; up 43 since FY2021.
66	Williamsburg County Top agencies DOJ (Department of Justice)	$766,426	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
67	City of Lawton Top agencies Army (Department of the Army)	$763,162	0.1%	Rank history: #59 in FY2021 and not on the FY2023–FY2025 lists; down 8 since FY2021.
68	DH Ortega Construction LLC Top agencies DOI (Department of the Interior)	$749,197	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
69	Schuylkill County Municipal Authority Top agencies DOJ (Department of Justice)	$747,940	0.1%	Rank history: #68 in FY2021, #65 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2021.
70	Water Treatment Services Inc. Top agencies VA (Department of Veterans Affairs)	$731,635	0.1%	Rank history: not on the FY2021 list, not on the FY2023 list, #76 in FY2024 and not on the FY2025 list; new.
71	City of Prestonsburg Through Prestonsburg City Utilities Commission Top agencies DOJ (Department of Justice)	$730,070	0.1%	Rank history: #73 in FY2021, #62 in FY2023, #78 in FY2024 and not on the FY2025 list; up 2 since FY2021.
72	Aurora Energy Services Inc. Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$726,769	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
73	City of Houston Top agencies DOJ (Department of Justice)	$723,921	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
74	Clear Lake City Water Authority Top agencies NASA (National Aeronautics and Space Administration)	$719,869	0.1%	Rank history: #52 in FY2021, #51 in FY2023, #24 in FY2024 and #53 in FY2025; down 22 since FY2021.
75	Utility Systems of Georgia, Inc. Top agencies Army (Department of the Army)	$719,508	0.1%	Rank history: #60 in FY2021, #66 in FY2023, #48 in FY2024 and #57 in FY2025; down 15 since FY2021.
76	Texarkana Water Utilities Top agencies DOJ (Department of Justice)	$703,580	0.1%	Rank history: not on the FY2021 list, #57 in FY2023 and not on the FY2024–FY2025 lists; up 25 since FY2021.
77	City of Tucson Top agencies DOJ (Department of Justice)	$647,696	0.1%	Rank history: #71 in FY2021 and not on the FY2023–FY2025 lists; down 6 since FY2021.
78	Town of Alderson Top agencies DOJ (Department of Justice)	$639,502	0.1%	Rank history: #72 in FY2021, #73 in FY2023, #52 in FY2024 and #61 in FY2025; down 6 since FY2021.
79	Board of Water Commissioners of Columbus Top agencies Army (Department of the Army)	$638,079	0.1%	Rank history: #54 in FY2021, #20 in FY2023, #35 in FY2024 and #46 in FY2025; down 25 since FY2021.
80	Allegany County Commissioners Top agencies DOJ (Department of Justice)	$610,426	0.1%	Rank history: #95 in FY2021, #93 in FY2023, #71 in FY2024 and #96 in FY2025; up 15 since FY2021.
81	Eagle Harbor, LLC Top agencies Army (Department of the Army)	$607,025	0.1%	Rank history: #77 in FY2021, #82 in FY2023, #62 in FY2024 and not on the FY2025 list; down 4 since FY2021.
82	Water Authority Busan Metropolitan City Korea 7 awardees, including Daegu Metropolitan City, Headquarters, Daegu Waterworks and Headquarters of Pohang Waterworks Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$599,135	0.1%	Rank history: #82 in FY2021, #79 in FY2023, #61 in FY2024 and not on the FY2025 list; unchanged since FY2021.
83	Green and Sustainable Services, LLC Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$585,763	0.1%	Rank history: not on the FY2021 list, #92 in FY2023, #68 in FY2024 and #77 in FY2025; new.
84	Forte Insurance (Cambodia) PLC Top agencies DOS (Department of State)	$574,476	0.1%	Rank history: #66 in FY2021, #89 in FY2023, #43 in FY2024 and #49 in FY2025; down 18 since FY2021.
85	City of Leavenworth 2 awardees, including City of Leavenworth KS Top agencies DOJ (Department of Justice)	$573,725	0.1%	Rank history: #91 in FY2021, #24 in FY2023, #58 in FY2024 and not on the FY2025 list; up 6 since FY2021.
86	B. David Co Inc. Top agencies DOS (Department of State)	$562,471	0.1%	Rank history: #86 in FY2021 and not on the FY2023–FY2025 lists; unchanged since FY2021.
87	Woodway Water Authority Top agencies DOJ (Department of Justice)	$557,507	0.1%	Rank history: #65 in FY2021, #76 in FY2023, #54 in FY2024 and #65 in FY2025; down 22 since FY2021.
88	New York City of Through New York City Water Board Top agencies DOJ (Department of Justice) SSA (Social Security Administration) Smithsonian (Smithsonian Institution)	$551,370	0.1%	Rank history: #49 in FY2021, #40 in FY2023 and not on the FY2024–FY2025 lists; down 39 since FY2021.
89	City of Portland Top agencies VA (Department of Veterans Affairs)	$523,000	0.1%	Rank history: #53 in FY2021 and not on the FY2023–FY2025 lists; down 36 since FY2021.
90	Aqua Water Supply Corp Top agencies DOJ (Department of Justice)	$517,525	0.1%	Rank history: #67 in FY2021 and not on the FY2023–FY2025 lists; down 23 since FY2021.
91	AWG Contracting LLC Top agencies Army (Department of the Army)	$515,625	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
92	Middlesex Water Company Through Tidewater Utilities Inc. Top agencies USAF (Department of the Air Force)	$515,135	0.1%	Rank history: #63 in FY2021, not on the FY2023 list, #83 in FY2024 and not on the FY2025 list; down 29 since FY2021.
93	Columbia Resource Conservation District Top agencies DOI (Department of the Interior)	$500,120	0.1%	Rank history: not on the FY2021 list, not on the FY2023 list, #66 in FY2024 and #82 in FY2025; up 13 since FY2021.
94	Lakehurst Water & Sanitation District Top agencies DOJ (Department of Justice)	$495,879	0.1%	Rank history: #88 in FY2021, #90 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2021.
95	Department of Water Resources Oregon Top agencies DOI (Department of the Interior)	$495,817	0.1%	Rank history: not on the FY2021 list, not on the FY2023 list, #93 in FY2024 and #78 in FY2025; new.
96	Mayfort Milling Company Private Limited Top agencies DOS (Department of State)	$479,490	0.1%	Rank history: #70 in FY2021, not on the FY2023 list, #84 in FY2024 and #70 in FY2025; down 26 since FY2021.
97	City of Benton Top agencies Army (Department of the Army)	$479,000	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
98	National Contracting Services, LLC Top agencies DOI (Department of the Interior)	$465,301	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
99	Suez WTS USA Inc. 2 awardees, including Veolia WTS Services USA Inc. and Ameriwater, LLC Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs)	$451,630	0.1%	Rank history: #78 in FY2021 and not on the FY2023–FY2025 lists; down 21 since FY2021.
100	City of Watervliet Top agencies Army (Department of the Army)	$442,000	0.1%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #95 in FY2025; up 49 since FY2021.

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100 of 646 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 22131

Code	Net obligations	Largest contractor
221310 Water Supply and Irrigation Systems	$543,325,373	American Water Works Company 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 $563 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 2022 ran Oct 1, 2021 – Sep 30, 2022. 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 FY2021. "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 FY2021 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 NAICS 22131 contractors in FY2022?

1. American Water Works Company Inc. ($173M), 2. Old North Utility Services Inc. ($59.4M), 3. Fort Riley Utility Services, Inc. ($18.4M), 4. Jacobs Engineering Group Inc. ($17.7M), 5. Emerald Coast Utility Services Inc. ($16.5M), 6. American Water Enterprises, LLC ($14.9M), 7. Washington Suburban Sanitary Commission ($14.5M), 8. Augusta-Richmond County Government ($13.8M), 9. Base Utilities Inc. ($11.9M), 10. Oklahoma City Water Utilities Trust ($11.2M).

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