Top 100 Contractors in PSC Z1ND: Maintenance of Sewage and Waste Facilities, Jul 2025–Jun 2026

Name: Top 100 Contractors in PSC Z1ND: Maintenance of Sewage and Waste 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 66% of PSC Z1ND contract dollars from July 2025 through June 2026

Contract obligations: $28,367,383 Net of deobligations, by contracts coded PSC Z1ND
Contractors: 111 Parent companies with an obligation
Largest contractor: Fedvet Construction $4.5 million, 15.3% 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	Fedvet Construction Top agencies DOI (Department of the Interior)	$4,497,723	15.3%	Rank history: not on the FY2021–FY2024 lists and #1 in FY2025; new, not ranked in Jul 2024–Jun 2025.
2	Mitsui E&S Holdings Co., Ltd. Through MES Tokki & Engineering Co., Ltd. Top agencies Navy (Department of the Navy)	$3,351,609	11.4%	Rank history: not on the FY2021–FY2023 lists, #38 in FY2024 and #3 in FY2025; up 75 since Jul 2024–Jun 2025.
3	Tatonka Trucking Llc. Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$2,311,680	7.9%	Rank history: not on the FY2021–FY2022 lists, #4 in FY2023, #6 in FY2024 and #7 in FY2025; up 8 since Jul 2024–Jun 2025.
4	Hanbaek Construction Co.,Ltd Top agencies Army (Department of the Army)	$1,967,428	6.7%	Rank history: not on the FY2021–FY2024 lists and #4 in FY2025; new, not ranked in Jul 2024–Jun 2025.
5	Ironwood Commercial Builders Inc Top agencies DOI (Department of the Interior)	$1,824,494	6.2%	Rank history: not on the FY2021–FY2024 lists and #5 in FY2025; new, not ranked in Jul 2024–Jun 2025.
6	Optech-Monette, LLC Top agencies USAF (Department of the Air Force)	$1,824,000	6.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
7	Bric LLC Top agencies DOI (Department of the Interior)	$1,457,915	5.0%	Rank history: not on the FY2021–FY2024 lists and #9 in FY2025; new, not ranked in Jul 2024–Jun 2025.
8	Enviremedial Services, Inc. Top agencies Army (Department of the Army)	$851,521	2.9%	Rank history: #2 in FY2021, #2 in FY2022, #8 in FY2023, #5 in FY2024 and #11 in FY2025; down 5 since Jul 2024–Jun 2025.
9	Centerra Integrated Services, LLC Top agencies Navy (Department of the Navy)	$742,071	2.5%	Rank history: not on the FY2021–FY2024 lists and #12 in FY2025; new, not ranked in Jul 2024–Jun 2025.
10	Yale Creek Inc. Top agencies USDA (Department of Agriculture)	$544,543	1.9%	Rank history: #43 in FY2021, not on the FY2022–FY2024 lists and #13 in FY2025; new, not ranked in Jul 2024–Jun 2025.
11	Seohai Construction Co.,Ltd. Top agencies Army (Department of the Army)	$445,897	1.5%	Rank history: not on the FY2021–FY2023 lists, #3 in FY2024 and not on the FY2025 list; down 7 since Jul 2024–Jun 2025.
12	Ben Lujan Towing, Inc. Top agencies USAF (Department of the Air Force)	$422,322	1.4%	Rank history: not on the FY2021–FY2022 lists, #11 in FY2023, #11 in FY2024 and #15 in FY2025; down 2 since Jul 2024–Jun 2025.
13	Waterworkforce Inc. Top agencies USDA (Department of Agriculture)	$384,223	1.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
14	Acome Construction Inc. Top agencies HHS (Department of Health and Human Services)	$371,360	1.3%	Rank history: not on the FY2021–FY2023 lists, #15 in FY2024 and #63 in FY2025; unchanged since Jul 2024–Jun 2025.
15	Lam Industries, LLC Top agencies DOI (Department of the Interior)	$361,425	1.2%	Rank history: not on the FY2021–FY2024 lists and #16 in FY2025; new, not ranked in Jul 2024–Jun 2025.
16	Sori E&C Co.,Ltd Top agencies Army (Department of the Army)	$327,728	1.1%	Rank history: not on the FY2021–FY2024 lists and #17 in FY2025; new, not ranked in Jul 2024–Jun 2025.
17	Major Contracting Services, Inc. Top agencies Army (Department of the Army)	$280,336	1.0%	Rank history: not on the FY2021–FY2024 lists and #39 in FY2025; up 61 since Jul 2024–Jun 2025.
18	Aaecon General Contracting LLC Top agencies Army (Department of the Army)	$248,160	0.8%	Rank history: not on the FY2021–FY2023 lists, #78 in FY2024 and #20 in FY2025; up 40 since Jul 2024–Jun 2025.
19	North Star Construction and Engineering Inc. Top agencies USAF (Department of the Air Force)	$235,501	0.8%	Rank history: not on the FY2021–FY2024 lists and #2 in FY2025; down 18 since Jul 2024–Jun 2025.
20	Premier Enterprise, Inc. Top agencies USDA (Department of Agriculture)	$235,443	0.8%	Rank history: not on the FY2021–FY2024 lists and #21 in FY2025; new, not ranked in Jul 2024–Jun 2025.
21	Bayside Engineering Construction Inc. Top agencies Navy (Department of the Navy)	$235,325	0.8%	Rank history: not on the FY2021–FY2023 lists, #19 in FY2024 and #22 in FY2025; down 4 since Jul 2024–Jun 2025.
22	Yeajin E&C Co.,Ltd. Top agencies Army (Department of the Army)	$225,059	0.8%	Rank history: not on the FY2021–FY2024 lists and #23 in FY2025; new, not ranked in Jul 2024–Jun 2025.
23	River Septic LLC Top agencies DOI (Department of the Interior)	$201,949	0.7%	Rank history: not on the FY2021–FY2024 lists and #34 in FY2025; new, not ranked in Jul 2024–Jun 2025.
24	Rymarc Construction Inc. Top agencies Army (Department of the Army)	$201,325	0.7%	Rank history: not on the FY2021–FY2024 lists and #24 in FY2025; new, not ranked in Jul 2024–Jun 2025.
25	Samuel Holdings, LLC Top agencies HHS (Department of Health and Human Services)	$183,086	0.6%	Rank history: not on the FY2021–FY2024 lists and #43 in FY2025; new, not ranked in Jul 2024–Jun 2025.
26	Eco.m. Servizi S.R.L. Top agencies Army (Department of the Army)	$180,791	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
27	Victory Contracting LLC Top agencies DOI (Department of the Interior)	$176,608	0.6%	Rank history: not on the FY2021–FY2024 lists and #25 in FY2025; new, not ranked in Jul 2024–Jun 2025.
28	A-1 Pump & Jet Service Inc Top agencies DOI (Department of the Interior)	$157,388	0.5%	Rank history: not on the FY2021–FY2022 lists, #24 in FY2023, not on the FY2024 list and #27 in FY2025; new, not ranked in Jul 2024–Jun 2025.
29	Schwandorfer Umwelttechnik GMBH Top agencies Army (Department of the Army)	$156,079	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
30	Ohio General Contracting LLC Top agencies USAF (Department of the Air Force)	$155,310	0.5%	Rank history: not on the FY2021–FY2024 lists and #28 in FY2025; new, not ranked in Jul 2024–Jun 2025.
31	El Dorado Septic Service, Inc. Top agencies DOI (Department of the Interior)	$150,487	0.5%	Rank history: #23 in FY2021, #19 in FY2022, #92 in FY2023, #32 in FY2024 and #32 in FY2025; down 10 since Jul 2024–Jun 2025.
32	Timely Transporters L.L.C. Top agencies DOI (Department of the Interior)	$147,889	0.5%	Rank history: not on the FY2021–FY2024 lists and #29 in FY2025; new, not ranked in Jul 2024–Jun 2025.
33	Texas Electrical & Testing Services LLC Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$145,300	0.5%	Rank history: not on the FY2021–FY2024 lists and #30 in FY2025; new, not ranked in Jul 2024–Jun 2025.
34	American Engineering Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$141,110	0.5%	Rank history: not on the FY2021–FY2023 lists, #86 in FY2024 and #31 in FY2025; up 31 since Jul 2024–Jun 2025.
35	Republic Services Inc. Through Republic Services of Kentucky, LLC Top agencies DOJ (Department of Justice)	$131,745	0.4%	Rank history: not on the FY2021–FY2023 lists, #25 in FY2024 and #41 in FY2025; down 7 since Jul 2024–Jun 2025.
36	Eight Co.,Ltd. Top agencies USAF (Department of the Air Force)	$118,197	0.4%	Rank history: #27 in FY2021, #23 in FY2022, #55 in FY2023, #30 in FY2024 and #48 in FY2025; new, not ranked in Jul 2024–Jun 2025.
37	Amentum Holdings, Inc. 2 awardees, including Amentum Technology, Inc. and Amentum Services, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$114,419	0.4%	Rank history: not on the FY2021–FY2024 lists and #56 in FY2025; new, not ranked in Jul 2024–Jun 2025.
38	Ireland Electric Co Top agencies USAF (Department of the Air Force)	$110,442	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
39	Talon Septic LLC Top agencies DOI (Department of the Interior)	$103,377	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
40	Sanitrol Septic Services, L.L.C. Top agencies DHS (Department of Homeland Security)	$99,000	0.3%	Rank history: not on the FY2021 list, #36 in FY2022, #49 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
41	Qsjv, LLC Top agencies USAF (Department of the Air Force)	$90,830	0.3%	Rank history: not on the FY2021–FY2024 lists and #6 in FY2025; down 39 since Jul 2024–Jun 2025.
42	DOO Beotok Pancevo Top agencies DOS (Department of State)	$90,573	0.3%	Rank history: #30 in FY2021, #22 in FY2022, #33 in FY2023, #31 in FY2024 and #36 in FY2025; down 19 since Jul 2024–Jun 2025.
43	Cogent, Inc. Top agencies Army (Department of the Army)	$90,267	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
44	Arakelian Enterprises, Inc. Top agencies DOJ (Department of Justice)	$83,363	0.3%	Rank history: not on the FY2021 list, #35 in FY2022, #36 in FY2023, #42 in FY2024 and #45 in FY2025; new, not ranked in Jul 2024–Jun 2025.
45	Chugach Consolidated Solutions LLC Top agencies Navy (Department of the Navy)	$76,655	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
46	Quay Rent-A-John & Septic Service. LLC Top agencies Army (Department of the Army)	$71,746	0.2%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; new, not ranked in Jul 2024–Jun 2025.
47	A-1 Sanitation Inc. Top agencies USDA (Department of Agriculture)	$70,500	0.2%	Rank history: not on the FY2021–FY2023 lists, #51 in FY2024 and #47 in FY2025; down 6 since Jul 2024–Jun 2025.
48	De AZA Garden Service, S.R.L. Top agencies DOS (Department of State)	$70,149	0.2%	Rank history: not on the FY2021–FY2024 lists and #42 in FY2025; new, not ranked in Jul 2024–Jun 2025.
49	Sociedad Espanola De Montajes Industriales SA Top agencies Navy (Department of the Navy)	$69,799	0.2%	Rank history: not on the FY2021–FY2023 lists, #8 in FY2024 and #10 in FY2025; down 43 since Jul 2024–Jun 2025.
50	Binary Exchange Technologies LLC Top agencies Army (Department of the Army)	$65,026	0.2%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; new, not ranked in Jul 2024–Jun 2025.
51	Eleven Bravo Group, LLC Top agencies DOI (Department of the Interior)	$60,000	0.2%	Rank history: not on the FY2021–FY2024 lists and #37 in FY2025; up 5 since Jul 2024–Jun 2025.
52	Pro Kleen Industrial Services Inc. Top agencies USAF (Department of the Air Force)	$57,392	0.2%	Rank history: #53 in FY2021, #42 in FY2022, #37 in FY2023, #57 in FY2024 and #78 in FY2025; up 14 since Jul 2024–Jun 2025.
53	RLA Holdings, Inc. Top agencies USDA (Department of Agriculture)	$55,000	0.2%	Rank history: #24 in FY2021, #11 in FY2022, #19 in FY2023, not on the FY2024 list and #68 in FY2025; new, not ranked in Jul 2024–Jun 2025.
54	Lunar Holdings LLC Top agencies USDA (Department of Agriculture)	$53,450	0.2%	Rank history: not on the FY2021–FY2024 lists and #69 in FY2025; new, not ranked in Jul 2024–Jun 2025.
55	JRS Optic Inspections Inc. Top agencies VA (Department of Veterans Affairs)	$53,200	0.2%	Rank history: not on the FY2021–FY2024 lists and #66 in FY2025; new, not ranked in Jul 2024–Jun 2025.
56	Trescott Brandon James Top agencies Army (Department of the Army)	$52,105	0.2%	Rank history: #54 in FY2021, #72 in FY2022, #67 in FY2023, #77 in FY2024 and #50 in FY2025; down 13 since Jul 2024–Jun 2025.
57	Outbackjack LLC Top agencies USDA (Department of Agriculture)	$51,700	0.2%	Rank history: #65 in FY2021, #56 in FY2022, not on the FY2023 list, #54 in FY2024 and #61 in FY2025; new, not ranked in Jul 2024–Jun 2025.
58	Krätz GMBH Top agencies Army (Department of the Army)	$47,786	0.2%	Rank history: #10 in FY2021, #8 in FY2022, not on the FY2023 list, #12 in FY2024 and #19 in FY2025; down 51 since Jul 2024–Jun 2025.
59	County of San Bernardino Top agencies DOJ (Department of Justice)	$46,166	0.2%	Rank history: not on the FY2021 list, #37 in FY2022, #40 in FY2023, #48 in FY2024 and #53 in FY2025; down 20 since Jul 2024–Jun 2025.
60	Suntiff, LLC Top agencies USDA (Department of Agriculture)	$45,000	0.2%	Rank history: not on the FY2021–FY2023 lists, #55 in FY2024 and #51 in FY2025; down 24 since Jul 2024–Jun 2025.
61	J&A Contracting LLC Top agencies DOI (Department of the Interior)	$43,667	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
62	Chugach Alaska Corporation Through Chugach Consolidated Solutions, LLC Top agencies Navy (Department of the Navy)	$43,540	0.1%	Rank history: not on the FY2021 list, #28 in FY2022, #29 in FY2023, #27 in FY2024 and #54 in FY2025; new, not ranked in Jul 2024–Jun 2025.
63	Delaware Valley Septic Sewer & Storm LLC Top agencies Army (Department of the Army)	$41,955	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
64	Passion In the Work LLC Top agencies USDA (Department of Agriculture)	$41,660	0.1%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; new, not ranked in Jul 2024–Jun 2025.
65	Fluid Solutions LLC Top agencies DOS (Department of State)	$39,581	0.1%	Rank history: not on the FY2021 list, #38 in FY2022, #41 in FY2023, #18 in FY2024 and not on the FY2025 list; down 32 since Jul 2024–Jun 2025.
66	Go Pro Septic, LLC Top agencies USAF (Department of the Air Force)	$37,285	0.1%	Rank history: not on the FY2021–FY2022 lists, #46 in FY2023, #52 in FY2024 and #57 in FY2025; down 31 since Jul 2024–Jun 2025.
67	Peractos LLC Top agencies Army (Department of the Army)	$37,235	0.1%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; new, not ranked in Jul 2024–Jun 2025.
68	Kotobuki Kankyoh Kizai Co.,Ltd. Top agencies Army (Department of the Army)	$36,493	0.1%	Rank history: not on the FY2021–FY2024 lists and #55 in FY2025; down 34 since Jul 2024–Jun 2025.
69	HZ Construction Inc. Top agencies DHS (Department of Homeland Security)	$35,322	0.1%	Rank history: not on the FY2021–FY2024 lists and #46 in FY2025; down 22 since Jul 2024–Jun 2025.
70	3RD Gen Drilling Corp Top agencies DOI (Department of the Interior)	$34,709	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
71	NCH Corporation Top agencies VA (Department of Veterans Affairs)	$34,277	0.1%	Rank history: not on the FY2021–FY2024 lists and #60 in FY2025; down 31 since Jul 2024–Jun 2025.
72	Paradigm Mechanical Corp. Top agencies Navy (Department of the Navy)	$34,136	0.1%	Rank history: not on the FY2021–FY2024 lists and #8 in FY2025; down 67 since Jul 2024–Jun 2025.
73	Hepaco LLC Top agencies DOJ (Department of Justice)	$33,871	0.1%	Rank history: not on the FY2021–FY2024 lists and #75 in FY2025; new, not ranked in Jul 2024–Jun 2025.
74	Browns Septic Service Inc. Top agencies USDA (Department of Agriculture)	$33,350	0.1%	Rank history: not on the FY2021–FY2023 lists, #56 in FY2024 and #65 in FY2025; down 30 since Jul 2024–Jun 2025.
75	Bemson Group, LLC Top agencies DOI (Department of the Interior)	$30,755	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
76	Bob Drayton Inc. Top agencies USAF (Department of the Air Force)	$26,937	0.1%	Rank history: not on the FY2021 list, #12 in FY2022, #20 in FY2023, #13 in FY2024 and #33 in FY2025; down 52 since Jul 2024–Jun 2025.
77	Warren Industries Incorporated Top agencies USDA (Department of Agriculture)	$26,051	0.1%	Rank history: not on the FY2021–FY2023 lists, #50 in FY2024 and #59 in FY2025; down 40 since Jul 2024–Jun 2025.
78	Owens Pump & Equipment LLC Top agencies DOI (Department of the Interior)	$25,642	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
79	AGY Consulting Group, LLC Top agencies VA (Department of Veterans Affairs)	$25,548	0.1%	Rank history: not on the FY2021–FY2024 lists and #74 in FY2025; down 27 since Jul 2024–Jun 2025.
80	Walker Utility Services LLC Top agencies Army (Department of the Army)	$25,344	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
81	UZ Turizm-Otelcilik Insaat Taahhut Bilisim Hayvancilik VE Tekstil Ticaret Limited Sirketi Top agencies DOS (Department of State)	$22,950	0.1%	Rank history: not on the FY2021–FY2024 lists and #70 in FY2025; new, not ranked in Jul 2024–Jun 2025.
82	A-1 Services, Inc. Top agencies USDA (Department of Agriculture)	$19,720	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
83	Water Professional Services, LLC Top agencies DOI (Department of the Interior)	$17,401	0.1%	Rank history: not on the FY2021–FY2023 lists, #74 in FY2024 and #77 in FY2025; down 29 since Jul 2024–Jun 2025.
84	Kerr United Group LLC Top agencies DOI (Department of the Interior)	$15,512	0.1%	Rank history: not on the FY2021–FY2024 lists and #79 in FY2025; new, not ranked in Jul 2024–Jun 2025.
85	Lang'S Septic Service Inc. Top agencies SSA (Social Security Administration)	$14,481	<0.1%	Rank history: not on the FY2021–FY2022 lists, #75 in FY2023, #85 in FY2024 and #82 in FY2025; down 24 since Jul 2024–Jun 2025.
86	Action Oil Services, Inc. Top agencies DOJ (Department of Justice)	$14,348	<0.1%	Rank history: not on the FY2021–FY2024 lists and #81 in FY2025; new, not ranked in Jul 2024–Jun 2025.
87	Bozeman Inc. Top agencies DHS (Department of Homeland Security)	$13,955	<0.1%	Rank history: not on the FY2021–FY2024 lists and #95 in FY2025; down 14 since Jul 2024–Jun 2025.
88	G & G Septic Service LLC Top agencies USDA (Department of Agriculture)	$13,200	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
89	Revel Environmental Manufacturing, Inc. Top agencies DOT (Department of Transportation)	$12,509	<0.1%	Rank history: #77 in FY2021, #66 in FY2022, #82 in FY2023, #87 in FY2024 and #85 in FY2025; down 22 since Jul 2024–Jun 2025.
90	Schaible, Mark Top agencies VA (Department of Veterans Affairs)	$12,007	<0.1%	Rank history: not on the FY2021–FY2024 lists and #98 in FY2025; new, not ranked in Jul 2024–Jun 2025.
91	Rocky Mountain Septic Llc. Top agencies USDA (Department of Agriculture)	$10,925	<0.1%	Rank history: not on the FY2021–FY2023 lists, #70 in FY2024 and #73 in FY2025; down 40 since Jul 2024–Jun 2025.
92	Oregon Pacific Leasing Inc. Top agencies DOI (Department of the Interior)	$10,902	<0.1%	Rank history: #55 in FY2021, #48 in FY2022, #45 in FY2023, not on the FY2024 list and #86 in FY2025; new, not ranked in Jul 2024–Jun 2025.
93	R & D Watters Septic Service, Inc. Top agencies Army (Department of the Army)	$10,700	<0.1%	Rank history: #86 in FY2021, #78 in FY2022, #91 in FY2023, #92 in FY2024 and #97 in FY2025; down 18 since Jul 2024–Jun 2025.
94	Reign Consultancy Limited Top agencies DOS (Department of State)	$9,903	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
95	Chappell, Vincent W Top agencies USDA (Department of Agriculture)	$9,750	<0.1%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023, #93 in FY2024 and #99 in FY2025; new, not ranked in Jul 2024–Jun 2025.
96	Capitol Chlorinator & Utility Service Inc. Top agencies VA (Department of Veterans Affairs)	$9,557	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
97	Tareq Al Mostaqbal Logistic Services L.l.c Top agencies USAF (Department of the Air Force)	$9,295	<0.1%	Rank history: not on the FY2021–FY2024 lists and #18 in FY2025; down 84 since Jul 2024–Jun 2025.
98	Terrabella Environmental Services Inc. Top agencies DOJ (Department of Justice)	$8,280	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
99	A-Affordable Royal Flush LLC Top agencies USDA (Department of Agriculture)	$8,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; new, not ranked in Jul 2024–Jun 2025.
100	J&A Wastewater Services, LLC Top agencies DOJ (Department of Justice)	$6,215	<0.1%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023, #62 in FY2024 and #76 in FY2025; down 41 since Jul 2024–Jun 2025.

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100 of 111 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 $29.3 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.
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 Z1ND contractors in Jul 2025–Jun 2026?

1. Fedvet Construction ($4.5M), 2. Mitsui E&S Holdings Co., Ltd. ($3.35M), 3. Tatonka Trucking Llc. ($2.31M), 4. Hanbaek Construction Co.,Ltd ($1.97M), 5. Ironwood Commercial Builders Inc ($1.82M), 6. Optech-Monette, LLC ($1.82M), 7. Bric LLC ($1.46M), 8. Enviremedial Services, Inc. ($852K), 9. Centerra Integrated Services, LLC ($742K), 10. Yale Creek Inc. ($545K).

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