Top 100 Contractors in PSC 46: Water Purification/Sewage Treatment, Jul 2025–Jun 2026

Name: Top 100 Contractors in PSC 46: Water Purification/Sewage Treatment, 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 66% of PSC 46 contract dollars from July 2025 through June 2026

Contract obligations: $109,687,682 Net of deobligations, by contracts coded PSC 46 or a code under it
Contractors: 257 Parent companies with an obligation
Largest contractor: Evac North America Inc $20.7 million, 18.6% 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	Evac North America Inc Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$20,715,772	18.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
2	Sunstate Environmental Services Inc. Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$17,520,666	15.7%	Rank history: not on the FY2021–FY2024 lists and #1 in FY2025; new, not ranked in Jul 2024–Jun 2025.
3	Highland Engineering, Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$13,218,167	11.9%	Rank history: #30 in FY2021, #32 in FY2022, #1 in FY2023, #27 in FY2024 and #43 in FY2025; up 24 since Jul 2024–Jun 2025.
4	Integrated Procurement Technologies Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$5,816,795	5.2%	Rank history: #4 in FY2021, #1 in FY2022, #5 in FY2023, #3 in FY2024 and #5 in FY2025; down 1 since Jul 2024–Jun 2025.
5	GTA Containers, LLC Top agencies Army (Department of the Army)	$4,689,008	4.2%	Rank history: not on the FY2021 list, #40 in FY2022, #3 in FY2023, #2 in FY2024 and #2 in FY2025; down 1 since Jul 2024–Jun 2025.
6	Iwakuni City Waterworks Bureau Top agencies Navy (Department of the Navy)	$3,225,875	2.9%	Rank history: not on the FY2021–FY2023 lists, #12 in FY2024 and #6 in FY2025; unchanged since Jul 2024–Jun 2025.
7	Atap Inc. Top agencies USAF (Department of the Air Force)	$2,141,352	1.9%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
8	NNA Inc. 2 awardees, including Fresenius Usa, Inc. Top agencies VA (Department of Veterans Affairs)	$2,111,593	1.9%	Rank history: not on the FY2021–FY2024 lists and #7 in FY2025; up 21 since Jul 2024–Jun 2025.
9	Vantive US Healthcare LLC Top agencies VA (Department of Veterans Affairs)	$2,011,369	1.8%	Rank history: not on the FY2021–FY2024 lists and #12 in FY2025; up 130 since Jul 2024–Jun 2025.
10	Supplycore LLC Top agencies DLA (Defense Logistics Agency)	$1,890,311	1.7%	Rank history: #10 in FY2021, #5 in FY2022, #8 in FY2023, #6 in FY2024 and #10 in FY2025; down 3 since Jul 2024–Jun 2025.
11	Bromine Systems Inc. Top agencies DLA (Defense Logistics Agency)	$1,842,931	1.7%	Rank history: #14 in FY2021, #4 in FY2022, #10 in FY2023, #7 in FY2024 and #11 in FY2025; down 1 since Jul 2024–Jun 2025.
12	Canadian Commercial Corporation Top agencies Navy (Department of the Navy)	$1,375,000	1.2%	Rank history: not on the FY2021–FY2024 lists and #13 in FY2025; new, not ranked in Jul 2024–Jun 2025.
13	HSQ Tech, Inc. Top agencies USAF (Department of the Air Force)	$1,299,500	1.2%	Rank history: not on the FY2021–FY2024 lists and #15 in FY2025; new, not ranked in Jul 2024–Jun 2025.
14	Ameriwater, LLC Top agencies VA (Department of Veterans Affairs)	$1,284,322	1.2%	Rank history: not on the FY2021–FY2023 lists, #18 in FY2024 and #21 in FY2025; up 10 since Jul 2024–Jun 2025.
15	SDV Office Systems LLC Top agencies VA (Department of Veterans Affairs)	$1,026,642	0.9%	Rank history: not on the FY2021–FY2023 lists, #98 in FY2024 and #8 in FY2025; down 6 since Jul 2024–Jun 2025.
16	Katadyn Desalination, LLC Top agencies Navy (Department of the Navy)	$1,023,350	0.9%	Rank history: #1 in FY2021, not on the FY2022–FY2023 lists, #13 in FY2024 and not on the FY2025 list; down 4 since Jul 2024–Jun 2025.
17	Luxfer Magtech Inc. Top agencies DLA (Defense Logistics Agency)	$935,808	0.8%	Rank history: not on the FY2021–FY2023 lists, #32 in FY2024 and #22 in FY2025; up 2 since Jul 2024–Jun 2025.
18	GEA North America Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$923,430	0.8%	Rank history: not on the FY2021–FY2023 lists, #48 in FY2024 and #61 in FY2025; new, not ranked in Jul 2024–Jun 2025.
19	Atlantic Diving Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$900,743	0.8%	Rank history: not on the FY2021–FY2023 lists, #40 in FY2024 and #14 in FY2025; down 6 since Jul 2024–Jun 2025.
20	Marathon Medical Corporation Top agencies VA (Department of Veterans Affairs)	$897,504	0.8%	Rank history: #17 in FY2021, #21 in FY2022, #25 in FY2023, #26 in FY2024 and #16 in FY2025; up 12 since Jul 2024–Jun 2025.
21	Fluidra SA Through Evac North America Inc. Top agencies Navy (Department of the Navy)	$853,300	0.8%	Rank history: not on the FY2021–FY2023 lists, #1 in FY2024 and #3 in FY2025; down 20 since Jul 2024–Jun 2025.
22	Hemphill Construction Co Inc. Top agencies Army (Department of the Army)	$837,935	0.8%	Rank history: not on the FY2021–FY2023 lists, #4 in FY2024 and #32 in FY2025; new, not ranked in Jul 2024–Jun 2025.
23	Windward Enterprises, LLC Top agencies DLA (Defense Logistics Agency)	$801,794	0.7%	Rank history: not on the FY2021–FY2024 lists and #27 in FY2025; up 101 since Jul 2024–Jun 2025.
24	Martin Military Inc. Top agencies DLA (Defense Logistics Agency)	$772,224	0.7%	Rank history: not on the FY2021–FY2022 lists, #21 in FY2023, #9 in FY2024 and #35 in FY2025; down 7 since Jul 2024–Jun 2025.
25	Fairwinds Technologies LLC Top agencies Navy (Department of the Navy)	$717,630	0.6%	Rank history: not on the FY2021–FY2024 lists and #23 in FY2025; new, not ranked in Jul 2024–Jun 2025.
26	Lifestream Watersystems, Inc. Top agencies DOI (Department of the Interior) DHS (Department of Homeland Security)	$676,236	0.6%	Rank history: #46 in FY2021, not on the FY2022 list, #74 in FY2023, #71 in FY2024 and #18 in FY2025; up 18 since Jul 2024–Jun 2025.
27	Norcatec LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$659,020	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
28	Oil States Industries, Inc. Top agencies Navy (Department of the Navy)	$626,970	0.6%	Rank history: not on the FY2021–FY2023 lists, #22 in FY2024 and #26 in FY2025; up 5 since Jul 2024–Jun 2025.
29	Avantech, LLC Top agencies Navy (Department of the Navy)	$586,384	0.5%	Rank history: #18 in FY2021, #30 in FY2022, not on the FY2023 list, #82 in FY2024 and #28 in FY2025; up 1 since Jul 2024–Jun 2025.
30	Commercial Energy Specialists, LLC Top agencies Navy (Department of the Navy)	$526,656	0.5%	Rank history: not on the FY2021–FY2024 lists and #29 in FY2025; up 141 since Jul 2024–Jun 2025.
31	Aqua-Chem, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$526,045	0.5%	Rank history: #41 in FY2021, #28 in FY2022, #24 in FY2023, #16 in FY2024 and #31 in FY2025; down 8 since Jul 2024–Jun 2025.
32	Jamaica Bearings Co., Inc. Top agencies DLA (Defense Logistics Agency)	$518,755	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
33	S I T Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$497,800	0.4%	Rank history: #48 in FY2021, not on the FY2022 list, #59 in FY2023, #49 in FY2024 and #39 in FY2025; up 24 since Jul 2024–Jun 2025.
34	EPD USA Inc. Top agencies DOI (Department of the Interior)	$471,465	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
35	Evoqua Water Technologies LLC 2 awardees Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy) Commerce (Department of Commerce)	$452,443	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
36	Cepeda Associates, Inc. Top agencies DLA (Defense Logistics Agency)	$436,536	0.4%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2023, #41 in FY2024 and #30 in FY2025; down 2 since Jul 2024–Jun 2025.
37	Global Logistics Strategies Inc. Top agencies DLA (Defense Logistics Agency)	$433,452	0.4%	Rank history: #74 in FY2021, #42 in FY2022, not on the FY2023 list, #86 in FY2024 and #73 in FY2025; up 75 since Jul 2024–Jun 2025.
38	Service Solutions Plumbing LLC Top agencies Army (Department of the Army)	$416,901	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
39	Triman Industries Inc. Top agencies DLA (Defense Logistics Agency)	$416,211	0.4%	Rank history: not on the FY2021 list, #97 in FY2022, #56 in FY2023, #74 in FY2024 and #99 in FY2025; up 53 since Jul 2024–Jun 2025.
40	Marine Electric Systems Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$402,265	0.4%	Rank history: #11 in FY2021, #20 in FY2022, #16 in FY2023, #14 in FY2024 and #9 in FY2025; down 32 since Jul 2024–Jun 2025.
41	Fluid Handling LLC 3 awardees, including Evoqua Water Technologies LLC Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$381,834	0.3%	Rank history: not on the FY2021–FY2024 lists and #34 in FY2025; up 2 since Jul 2024–Jun 2025.
42	PBE Inc. Top agencies HHS (Department of Health and Human Services)	$344,268	0.3%	Rank history: not on the FY2021–FY2023 lists, #23 in FY2024 and #44 in FY2025; down 20 since Jul 2024–Jun 2025.
43	R P M Supply Corporation Top agencies DLA (Defense Logistics Agency)	$343,806	0.3%	Rank history: #19 in FY2021, not on the FY2022 list, #19 in FY2023, #21 in FY2024 and #75 in FY2025; down 17 since Jul 2024–Jun 2025.
44	SWK Stadtwerke Kaiserslautern Versorgungs-AG Top agencies USAF (Department of the Air Force)	$336,211	0.3%	Rank history: not on the FY2021–FY2022 lists, #33 in FY2023 and not on the FY2024–FY2025 lists; up 194 since Jul 2024–Jun 2025.
45	Sustainable Industries Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$300,785	0.3%	Rank history: not on the FY2021 list, #77 in FY2022, not on the FY2023–FY2024 lists and #24 in FY2025; down 17 since Jul 2024–Jun 2025.
46	Daiichi Bussan Co., Ltd. Top agencies USAF (Department of the Air Force)	$299,120	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
47	Andrew J Zeigler LLC Top agencies DLA (Defense Logistics Agency)	$291,456	0.3%	Rank history: not on the FY2021–FY2023 lists, #70 in FY2024 and #45 in FY2025; up 14 since Jul 2024–Jun 2025.
48	AMS 21St Century Logistics, LLC Top agencies DLA (Defense Logistics Agency)	$287,925	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
49	Filtration Technology, Inc. Top agencies DOI (Department of the Interior)	$267,810	0.2%	Rank history: #58 in FY2021, #34 in FY2022, #54 in FY2023, #31 in FY2024 and #36 in FY2025; down 12 since Jul 2024–Jun 2025.
50	Coastline Ltd. Top agencies Smithsonian (Smithsonian Institution)	$264,280	0.2%	Rank history: not on the FY2021–FY2022 lists, #91 in FY2023, #58 in FY2024 and #70 in FY2025; up 20 since Jul 2024–Jun 2025.
51	Absolute Water Technologies L.L.C. Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$258,908	0.2%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; up 11 since Jul 2024–Jun 2025.
52	Howell Laboratories Inc. Top agencies DLA (Defense Logistics Agency)	$257,057	0.2%	Rank history: #5 in FY2021, #12 in FY2022, not on the FY2023 list, #65 in FY2024 and not on the FY2025 list; up 16 since Jul 2024–Jun 2025.
53	Burhani Enterprises Inc. Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$232,031	0.2%	Rank history: not on the FY2021 list, #87 in FY2022, not on the FY2023 list, #60 in FY2024 and #40 in FY2025; up 52 since Jul 2024–Jun 2025.
54	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency)	$220,675	0.2%	Rank history: #44 in FY2021, #39 in FY2022, #46 in FY2023, #57 in FY2024 and #37 in FY2025; down 9 since Jul 2024–Jun 2025.
55	Aviate Enterprises, Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice)	$200,161	0.2%	Rank history: not on the FY2021–FY2023 lists, #94 in FY2024 and #50 in FY2025; up 169 since Jul 2024–Jun 2025.
56	Emergency Water Solutions, LLC Top agencies VA (Department of Veterans Affairs)	$192,780	0.2%	Rank history: not on the FY2021–FY2023 lists, #53 in FY2024 and #86 in FY2025; down 1 since Jul 2024–Jun 2025.
57	Southwest Fluid Systems, LLC Top agencies DOJ (Department of Justice)	$192,210	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
58	RTX Corporation 2 awardees, including Hamilton Sundstrand Corporation Top agencies DLA (Defense Logistics Agency)	$185,959	0.2%	Rank history: #66 in FY2021, not on the FY2022 list, #86 in FY2023, #50 in FY2024 and #38 in FY2025; down 17 since Jul 2024–Jun 2025.
59	Mid-South Chemical Company, Inc. Top agencies VA (Department of Veterans Affairs)	$184,500	0.2%	Rank history: #32 in FY2021 and not on the FY2022–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
60	Quantico Tactical Incorporated Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$178,513	0.2%	Rank history: not on the FY2021–FY2023 lists, #91 in FY2024 and not on the FY2025 list; up 11 since Jul 2024–Jun 2025.
61	Calhoun & Dejong Inc. Top agencies DOI (Department of the Interior)	$173,553	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
62	Peterson Plumbing Supply Top agencies USDA (Department of Agriculture)	$169,866	0.2%	Rank history: not on the FY2021–FY2024 lists and #49 in FY2025; new, not ranked in Jul 2024–Jun 2025.
63	Gineftao, LLC Top agencies USAF (Department of the Air Force)	$167,750	0.2%	Rank history: not on the FY2021–FY2025 lists; up 38 since Jul 2024–Jun 2025.
64	Aquamedix LLC Top agencies VA (Department of Veterans Affairs)	$163,338	0.1%	Rank history: not on the FY2021–FY2023 lists, #43 in FY2024 and #51 in FY2025; down 16 since Jul 2024–Jun 2025.
65	Brewfab, LLC Top agencies Navy (Department of the Navy)	$157,916	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
66	General Benefit Corporation Cd3 Top agencies DOI (Department of the Interior)	$149,681	0.1%	Rank history: not on the FY2021–FY2024 lists and #54 in FY2025; new, not ranked in Jul 2024–Jun 2025.
67	Fourinox, Inc. Top agencies Navy (Department of the Navy)	$146,850	0.1%	Rank history: #54 in FY2021, not on the FY2022–FY2023 lists, #69 in FY2024 and #56 in FY2025; up 7 since Jul 2024–Jun 2025.
68	The Davinci Company, LLC Top agencies VA (Department of Veterans Affairs)	$145,364	0.1%	Rank history: not on the FY2021–FY2024 lists and #57 in FY2025; new, not ranked in Jul 2024–Jun 2025.
69	Gyrene Engineering Management, LLC Top agencies USAF (Department of the Air Force)	$142,359	0.1%	Rank history: #67 in FY2021, #66 in FY2022, #79 in FY2023, not on the FY2024 list and #58 in FY2025; new, not ranked in Jul 2024–Jun 2025.
70	Lake Shore Systems Inc. Top agencies Navy (Department of the Navy)	$140,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
71	Carolina Water Specialties LLC Top agencies DOS (Department of State)	$139,792	0.1%	Rank history: not on the FY2021 list, #52 in FY2022, #31 in FY2023, not on the FY2024 list and #53 in FY2025; up 94 since Jul 2024–Jun 2025.
72	Setpoint Systems Corp Top agencies USAF (Department of the Air Force)	$137,107	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
73	Liquitech, Inc. Top agencies VA (Department of Veterans Affairs)	$136,660	0.1%	Rank history: not on the FY2021–FY2024 lists and #60 in FY2025; new, not ranked in Jul 2024–Jun 2025.
74	Professional Turf Products, Limited Partnership Top agencies USAF (Department of the Air Force)	$130,834	0.1%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; new, not ranked in Jul 2024–Jun 2025.
75	B. David Co Inc. Top agencies DOS (Department of State)	$129,767	0.1%	Rank history: #15 in FY2021, #19 in FY2022, #23 in FY2023, #35 in FY2024 and #42 in FY2025; down 37 since Jul 2024–Jun 2025.
76	Dela Technology Corporation Top agencies DLA (Defense Logistics Agency)	$126,731	0.1%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023 and not on the FY2024–FY2025 lists; up 158 since Jul 2024–Jun 2025.
77	ELW Global UK Ltd Top agencies USAF (Department of the Air Force)	$125,535	0.1%	Rank history: not on the FY2021–FY2023 lists, #36 in FY2024 and not on the FY2025 list; down 35 since Jul 2024–Jun 2025.
78	The Filtrine Manufacturing Company, Inc. Top agencies USAF (Department of the Air Force)	$124,347	0.1%	Rank history: not on the FY2021–FY2024 lists and #66 in FY2025; new, not ranked in Jul 2024–Jun 2025.
79	H C Merchandisers, Inc. Top agencies DLA (Defense Logistics Agency)	$119,657	0.1%	Rank history: not on the FY2021–FY2024 lists and #67 in FY2025; new, not ranked in Jul 2024–Jun 2025.
80	PC Vision Inc Top agencies Army (Department of the Army)	$113,280	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
81	Airborne Supply Inc. Top agencies DLA (Defense Logistics Agency)	$112,950	0.1%	Rank history: not on the FY2021–FY2024 lists and #71 in FY2025; new, not ranked in Jul 2024–Jun 2025.
82	Filtration Concepts Inc. Top agencies Commerce (Department of Commerce)	$108,078	0.1%	Rank history: not on the FY2021–FY2024 lists and #76 in FY2025; up 36 since Jul 2024–Jun 2025.
83	Puragen Carbones Activados, S.l. Top agencies Navy (Department of the Navy)	$107,525	0.1%	Rank history: not on the FY2021–FY2024 lists and #77 in FY2025; up 36 since Jul 2024–Jun 2025.
84	Red River Pump Specialists Inc. Top agencies USAF (Department of the Air Force)	$105,858	0.1%	Rank history: not on the FY2021–FY2024 lists and #78 in FY2025; new, not ranked in Jul 2024–Jun 2025.
85	Energysolutions Services Inc. Top agencies Navy (Department of the Navy)	$104,270	0.1%	Rank history: not on the FY2021–FY2024 lists and #79 in FY2025; new, not ranked in Jul 2024–Jun 2025.
86	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency)	$103,751	0.1%	Rank history: #21 in FY2021, #17 in FY2022, #17 in FY2023 and not on the FY2024–FY2025 lists; up 162 since Jul 2024–Jun 2025.
87	Alfa Laval U.S. Holding Inc. 2 awardees, including Alfa Laval Inc. Top agencies Navy (Department of the Navy)	$101,778	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
88	J.G.B. Enterprises Inc. Through Echelon Supply and Service, Inc. Top agencies DLA (Defense Logistics Agency)	$95,960	0.1%	Rank history: not on the FY2021–FY2025 lists; up 98 since Jul 2024–Jun 2025.
89	Kay Kay LLC Top agencies Commerce (Department of Commerce)	$95,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #83 in FY2025; new, not ranked in Jul 2024–Jun 2025.
90	Atlantium Technologies Ltd Top agencies DOI (Department of the Interior)	$94,435	0.1%	Rank history: #8 in FY2021, not on the FY2022–FY2024 lists and #84 in FY2025; new, not ranked in Jul 2024–Jun 2025.
91	Northwest Water Conditioning Company Top agencies VA (Department of Veterans Affairs) DOI (Department of the Interior)	$93,693	0.1%	Rank history: not on the FY2021–FY2024 lists and #85 in FY2025; new, not ranked in Jul 2024–Jun 2025.
92	Fed Crew Inc. Top agencies DHS (Department of Homeland Security)	$90,972	0.1%	Rank history: not on the FY2021–FY2025 lists; up 108 since Jul 2024–Jun 2025.
93	Dibert Valve and Fitting Company, Incorporated Top agencies Navy (Department of the Navy)	$89,809	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
94	Brown & Morrison, Limited Top agencies Navy (Department of the Navy)	$88,257	0.1%	Rank history: not on the FY2021–FY2024 lists and #89 in FY2025; new, not ranked in Jul 2024–Jun 2025.
95	Certified Stainless Service Inc. Top agencies USAF (Department of the Air Force)	$85,070	0.1%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; new, not ranked in Jul 2024–Jun 2025.
96	Industrial Water Engineering Inc. Top agencies HHS (Department of Health and Human Services)	$84,087	0.1%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; new, not ranked in Jul 2024–Jun 2025.
97	Cedarville Engineering Group LLC Top agencies DOT (Department of Transportation)	$83,750	0.1%	Rank history: not on the FY2021–FY2024 lists and #94 in FY2025; new, not ranked in Jul 2024–Jun 2025.
98	Advance Water Systems, Inc. Top agencies VA (Department of Veterans Affairs)	$79,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
99	Cerilliant Corporation Through EMD Millipore Corp Top agencies DOI (Department of the Interior)	$78,673	0.1%	Rank history: not on the FY2021–FY2025 lists; down 3 since Jul 2024–Jun 2025.
100	Oceans Design Inc. Top agencies Commerce (Department of Commerce)	$76,837	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.

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100 of 257 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC 46

Code	Net obligations	Largest contractor
4630 Sewage Treatment Equipment	$55,146,307	Evac North America Inc
4610 Water Purification Equipment	$50,503,210	Integrated Procurement Technologies
4620 Water Distillation Equipment, Marine and Industrial	$4,038,165	Fairwinds Technologies LLC

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 $111 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 PSC 46 contractors in Jul 2025–Jun 2026?

1. Evac North America Inc ($20.7M), 2. Sunstate Environmental Services Inc. ($17.5M), 3. Highland Engineering, Inc. ($13.2M), 4. Integrated Procurement Technologies ($5.82M), 5. GTA Containers, LLC ($4.69M), 6. Iwakuni City Waterworks Bureau ($3.23M), 7. Atap Inc. ($2.14M), 8. NNA Inc. ($2.11M), 9. Vantive US Healthcare LLC ($2.01M), 10. Supplycore LLC ($1.89M).

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