Top 100 Contractors in PSC Z1ND: Maintenance of Sewage and Waste Facilities, FY2025

Name: Top 100 Contractors in PSC Z1ND: Maintenance of Sewage and Waste Facilities, FY2025
Creator: GovTribe

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

The top 10 won 67% of FY2025 PSC Z1ND contract dollars

Contract obligations: $29,374,030 Net of deobligations, by contracts coded PSC Z1ND
Contractors: 106 Parent companies with an obligation
Largest contractor: Fedvet Construction $4.5 million, 14.8% 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	14.8%	Rank history: not on the FY2021–FY2024 lists; new.
2	North Star Construction and Engineering Inc. Top agencies USAF (Department of the Air Force)	$3,429,185	11.3%	Rank history: not on the FY2021–FY2024 lists; new.
3	Mitsui E&S Holdings Co., Ltd. Through MES Tokki & Engineering Co., Ltd. Top agencies Navy (Department of the Navy)	$2,642,087	8.7%	Rank history: not on the FY2021–FY2023 lists and #38 in FY2024; up 35 since FY2024.
4	Hanbaek Construction Co.,Ltd Top agencies Army (Department of the Army)	$1,967,428	6.5%	Rank history: not on the FY2021–FY2024 lists; new.
5	Ironwood Commercial Builders Inc Top agencies DOI (Department of the Interior)	$1,824,494	6.0%	Rank history: not on the FY2021–FY2024 lists; new.
6	Qsjv, LLC Top agencies USAF (Department of the Air Force)	$1,522,721	5.0%	Rank history: not on the FY2021–FY2024 lists; new.
7	Tatonka Trucking Llc. Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$1,254,360	4.1%	Rank history: not on the FY2021–FY2022 lists, #4 in FY2023 and #6 in FY2024; down 1 since FY2024.
8	Paradigm Mechanical Corp. Top agencies Navy (Department of the Navy)	$1,090,104	3.6%	Rank history: not on the FY2021–FY2024 lists; new.
9	Bric LLC Top agencies DOI (Department of the Interior)	$1,064,968	3.5%	Rank history: not on the FY2021–FY2024 lists; new.
10	Sociedad Espanola De Montajes Industriales SA Top agencies Navy (Department of the Navy)	$1,029,483	3.4%	Rank history: not on the FY2021–FY2023 lists and #8 in FY2024; down 2 since FY2024.
11	Enviremedial Services, Inc. Top agencies Army (Department of the Army)	$959,796	3.2%	Rank history: #2 in FY2021, #2 in FY2022, #8 in FY2023 and #5 in FY2024; down 6 since FY2024.
12	Centerra Integrated Services, LLC Top agencies Navy (Department of the Navy)	$742,071	2.4%	Rank history: not on the FY2021–FY2024 lists; new.
13	Yale Creek Inc. Top agencies USDA (Department of Agriculture)	$544,543	1.8%	Rank history: #43 in FY2021 and not on the FY2022–FY2024 lists; returned.
14	Perfected Solutions LLC Top agencies Army (Department of the Army)	$396,000	1.3%	Rank history: not on the FY2021–FY2024 lists; new.
15	Ben Lujan Towing, Inc. Top agencies USAF (Department of the Air Force)	$390,744	1.3%	Rank history: not on the FY2021–FY2022 lists, #11 in FY2023 and #11 in FY2024; down 4 since FY2024.
16	Lam Industries, LLC Top agencies DOI (Department of the Interior)	$361,425	1.2%	Rank history: not on the FY2021–FY2024 lists; new.
17	Sori E&C Co.,Ltd Top agencies Army (Department of the Army)	$327,728	1.1%	Rank history: not on the FY2021–FY2024 lists; new.
18	Tareq Al Mostaqbal Logistic Services L.l.c Top agencies USAF (Department of the Air Force)	$298,271	1.0%	Rank history: not on the FY2021–FY2024 lists; new.
19	Krätz GMBH Top agencies Army (Department of the Army)	$281,943	0.9%	Rank history: #10 in FY2021, #8 in FY2022, not on the FY2023 list and #12 in FY2024; down 7 since FY2024.
20	Aaecon General Contracting LLC Top agencies Army (Department of the Army)	$248,160	0.8%	Rank history: not on the FY2021–FY2023 lists and #78 in FY2024; up 58 since FY2024.
21	Premier Enterprise, Inc. Top agencies USDA (Department of Agriculture)	$235,443	0.8%	Rank history: not on the FY2021–FY2024 lists; new.
22	Bayside Engineering Construction Inc. Top agencies Navy (Department of the Navy)	$235,325	0.8%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2024; down 3 since FY2024.
23	Yeajin E&C Co.,Ltd. Top agencies Army (Department of the Army)	$225,059	0.7%	Rank history: not on the FY2021–FY2024 lists; new.
24	Rymarc Construction Inc. Top agencies Army (Department of the Army)	$201,325	0.7%	Rank history: not on the FY2021–FY2024 lists; new.
25	Victory Contracting LLC Top agencies DOI (Department of the Interior)	$166,751	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
26	Bar Environmental Supply Inc. Top agencies USDA (Department of Agriculture)	$159,220	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
27	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 and not on the FY2024 list; returned.
28	Ohio General Contracting LLC Top agencies USAF (Department of the Air Force)	$155,310	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
29	Timely Transporters L.L.C. Top agencies DOI (Department of the Interior)	$147,889	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
30	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; new.
31	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 and #86 in FY2024; up 55 since FY2024.
32	El Dorado Septic Service, Inc. Top agencies DOI (Department of the Interior)	$134,432	0.4%	Rank history: #23 in FY2021, #19 in FY2022, #92 in FY2023 and #32 in FY2024; unchanged since FY2024.
33	Bob Drayton Inc. Top agencies USAF (Department of the Air Force)	$101,396	0.3%	Rank history: not on the FY2021 list, #12 in FY2022, #20 in FY2023 and #13 in FY2024; down 20 since FY2024.
34	River Septic LLC Top agencies DOI (Department of the Interior)	$98,417	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
35	Clogbusters Underground Technologies, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$96,628	0.3%	Rank history: #34 in FY2021, #20 in FY2022, #28 in FY2023 and #29 in FY2024; down 6 since FY2024.
36	DOO Beotok Pancevo Top agencies DOS (Department of State)	$90,573	0.3%	Rank history: #30 in FY2021, #22 in FY2022, #33 in FY2023 and #31 in FY2024; down 5 since FY2024.
37	Eleven Bravo Group, LLC Top agencies DOI (Department of the Interior)	$75,970	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
38	4RB Coopers LLC Top agencies USDA (Department of Agriculture)	$75,000	0.2%	Rank history: #44 in FY2021, #24 in FY2022, #35 in FY2023 and #34 in FY2024; down 4 since FY2024.
39	Major Contracting Services, Inc. Top agencies Army (Department of the Army)	$73,722	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
40	Wind River Environmental, LLC Top agencies DOJ (Department of Justice)	$71,049	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
41	Republic Services Inc. Through Republic Services of Kentucky, LLC Top agencies DOJ (Department of Justice)	$70,836	0.2%	Rank history: not on the FY2021–FY2023 lists and #25 in FY2024; down 16 since FY2024.
42	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; new.
43	Samuel Holdings, LLC Top agencies HHS (Department of Health and Human Services)	$68,799	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
44	Binary Exchange Technologies LLC Top agencies Army (Department of the Army)	$65,026	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
45	Arakelian Enterprises, Inc. Top agencies DOJ (Department of Justice)	$60,652	0.2%	Rank history: not on the FY2021 list, #35 in FY2022, #36 in FY2023 and #42 in FY2024; down 3 since FY2024.
46	HZ Construction Inc. Top agencies DHS (Department of Homeland Security)	$60,322	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
47	A-1 Sanitation Inc. Top agencies USDA (Department of Agriculture)	$55,000	0.2%	Rank history: not on the FY2021–FY2023 lists and #51 in FY2024; up 4 since FY2024.
48	Eight Co.,Ltd. Top agencies USAF (Department of the Air Force)	$50,932	0.2%	Rank history: #27 in FY2021, #23 in FY2022, #55 in FY2023 and #30 in FY2024; down 18 since FY2024.
49	Wwss Associates Inc. Top agencies USAF (Department of the Air Force)	$48,089	0.2%	Rank history: #39 in FY2021, #25 in FY2022, #39 in FY2023 and #41 in FY2024; down 8 since FY2024.
50	Trescott Brandon James Top agencies Army (Department of the Army)	$45,605	0.1%	Rank history: #54 in FY2021, #72 in FY2022, #67 in FY2023 and #77 in FY2024; up 27 since FY2024.
51	Suntiff, LLC Top agencies USDA (Department of Agriculture)	$45,000	0.1%	Rank history: not on the FY2021–FY2023 lists and #55 in FY2024; up 4 since FY2024.
52	Passion In the Work LLC Top agencies USDA (Department of Agriculture)	$41,660	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
53	County of San Bernardino Top agencies DOJ (Department of Justice)	$40,331	0.1%	Rank history: not on the FY2021 list, #37 in FY2022, #40 in FY2023 and #48 in FY2024; down 5 since FY2024.
54	Chugach Alaska Corporation Through Chugach Consolidated Solutions, LLC Top agencies Navy (Department of the Navy)	$39,579	0.1%	Rank history: not on the FY2021 list, #28 in FY2022, #29 in FY2023 and #27 in FY2024; down 27 since FY2024.
55	Kotobuki Kankyoh Kizai Co.,Ltd. Top agencies Army (Department of the Army)	$37,672	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
56	Amentum Holdings, Inc. 2 awardees, including Amentum Services, Inc. and Amentum Technology, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$37,347	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
57	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 and #52 in FY2024; down 5 since FY2024.
58	Quay Rent-A-John & Septic Service. LLC Top agencies Army (Department of the Army)	$35,828	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
59	Warren Industries Incorporated Top agencies USDA (Department of Agriculture)	$34,100	0.1%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2024; down 9 since FY2024.
60	NCH Corporation Top agencies VA (Department of Veterans Affairs)	$32,645	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
61	Outbackjack LLC Top agencies USDA (Department of Agriculture)	$32,037	0.1%	Rank history: #65 in FY2021, #56 in FY2022, not on the FY2023 list and #54 in FY2024; down 7 since FY2024.
62	Forest Trail Company Services LLC Top agencies Army (Department of the Army)	$28,710	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
63	Acome Construction Inc. Top agencies HHS (Department of Health and Human Services)	$28,147	0.1%	Rank history: not on the FY2021–FY2023 lists and #15 in FY2024; down 48 since FY2024.
64	Provizion LLC Top agencies DOI (Department of the Interior)	$27,648	0.1%	Rank history: not on the FY2021–FY2023 lists and #61 in FY2024; down 3 since FY2024.
65	Browns Septic Service Inc. Top agencies USDA (Department of Agriculture)	$27,600	0.1%	Rank history: not on the FY2021–FY2023 lists and #56 in FY2024; down 9 since FY2024.
66	JRS Optic Inspections Inc. Top agencies VA (Department of Veterans Affairs)	$26,600	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
67	R.e. Pedrotti Company, Inc. Top agencies USDA (Department of Agriculture)	$25,020	0.1%	Rank history: not on the FY2021 list, #63 in FY2022, #56 in FY2023 and #66 in FY2024; down 1 since FY2024.
68	RLA Holdings, Inc. Top agencies USDA (Department of Agriculture)	$25,000	0.1%	Rank history: #24 in FY2021, #11 in FY2022, #19 in FY2023 and not on the FY2024 list; returned.
69	Lunar Holdings LLC Top agencies USDA (Department of Agriculture)	$24,300	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
70	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; new.
71	Derek James Bridges Top agencies HHS (Department of Health and Human Services)	$22,500	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
72	Kobakyu, K.K. Top agencies USAF (Department of the Air Force)	$21,788	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
73	Rocky Mountain Septic Llc. Top agencies USDA (Department of Agriculture)	$21,725	0.1%	Rank history: not on the FY2021–FY2023 lists and #70 in FY2024; down 3 since FY2024.
74	AGY Consulting Group, LLC Top agencies VA (Department of Veterans Affairs)	$21,680	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
75	Hepaco LLC Top agencies DOJ (Department of Justice)	$21,242	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
76	J&A Wastewater Services, LLC Top agencies DOJ (Department of Justice)	$18,645	0.1%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023 and #62 in FY2024; down 14 since FY2024.
77	Water Professional Services, LLC Top agencies DOI (Department of the Interior)	$17,401	0.1%	Rank history: not on the FY2021–FY2023 lists and #74 in FY2024; down 3 since FY2024.
78	Pro Kleen Industrial Services Inc. Top agencies USAF (Department of the Air Force)	$16,970	0.1%	Rank history: #53 in FY2021, #42 in FY2022, #37 in FY2023 and #57 in FY2024; down 21 since FY2024.
79	Kerr United Group LLC Top agencies DOI (Department of the Interior)	$15,512	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
80	Progressive Recovery Inc. Top agencies DOI (Department of the Interior)	$15,080	<0.1%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2023 and #79 in FY2024; down 1 since FY2024.
81	Action Oil Services, Inc. Top agencies DOJ (Department of Justice)	$14,348	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
82	Lang'S Septic Service Inc. Top agencies SSA (Social Security Administration)	$14,108	<0.1%	Rank history: not on the FY2021–FY2022 lists, #75 in FY2023 and #85 in FY2024; up 3 since FY2024.
83	Copper Mountain Services LLC Top agencies DOI (Department of the Interior)	$13,707	<0.1%	Rank history: #22 in FY2021 and not on the FY2022–FY2024 lists; returned.
84	Jet Inc. Top agencies DOS (Department of State)	$12,610	<0.1%	Rank history: #66 in FY2021, not on the FY2022 list, #74 in FY2023 and #83 in FY2024; down 1 since FY2024.
85	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 and #87 in FY2024; up 2 since FY2024.
86	Oregon Pacific Leasing Inc. Top agencies DOI (Department of the Interior)	$12,246	<0.1%	Rank history: #55 in FY2021, #48 in FY2022, #45 in FY2023 and not on the FY2024 list; returned.
87	Tucson Tallow Co, Inc. Top agencies DOJ (Department of Justice)	$12,000	<0.1%	Rank history: not on the FY2021 list, #64 in FY2022, #66 in FY2023 and #73 in FY2024; down 14 since FY2024.
88	Peractos LLC Top agencies Army (Department of the Army)	$11,976	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
89	LNZ Enterprises LLC Top agencies DHS (Department of Homeland Security)	$9,630	<0.1%	Rank history: not on the FY2021–FY2023 lists and #69 in FY2024; down 20 since FY2024.
90	B & B Concrete Products Inc. Top agencies USDA (Department of Agriculture)	$8,960	<0.1%	Rank history: #78 in FY2021, #68 in FY2022, #84 in FY2023 and #89 in FY2024; down 1 since FY2024.
91	Chugach Government Solutions, LLC Through Chugach Consolidated Solutions, LLC Top agencies Navy (Department of the Navy)	$8,411	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
92	A-Affordable Royal Flush LLC Top agencies USDA (Department of Agriculture)	$8,000	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
93	Ohno Jyuden Doboku Co., Ltd. Top agencies Army (Department of the Army)	$7,627	<0.1%	Rank history: not on the FY2021–FY2023 lists and #63 in FY2024; down 30 since FY2024.
94	Big Valley Sanitation Inc. Top agencies DOI (Department of the Interior)	$7,573	<0.1%	Rank history: not on the FY2021 list, #54 in FY2022, #58 in FY2023 and #90 in FY2024; down 4 since FY2024.
95	Bozeman Inc. Top agencies DHS (Department of Homeland Security)	$7,455	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
96	Globa TEK LLC Top agencies VA (Department of Veterans Affairs)	$6,326	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
97	R & D Watters Septic Service, Inc. Top agencies Army (Department of the Army)	$6,000	<0.1%	Rank history: #86 in FY2021, #78 in FY2022, #91 in FY2023 and #92 in FY2024; down 5 since FY2024.
98	Schaible, Mark Top agencies VA (Department of Veterans Affairs)	$5,857	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
99	Chappell, Vincent W Top agencies USDA (Department of Agriculture)	$4,875	<0.1%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023 and #93 in FY2024; down 6 since FY2024.
100	Old Pueblo Septic and Drain Service, Inc. Top agencies VA (Department of Veterans Affairs)	$3,290	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.

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100 of 106 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 $30.4 million obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2025 ran Oct 1, 2024 – Sep 30, 2025. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2024. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2024 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 PSC Z1ND contractors in FY2025?

1. Fedvet Construction ($4.5M), 2. North Star Construction and Engineering Inc. ($3.43M), 3. Mitsui E&S Holdings Co., Ltd. ($2.64M), 4. Hanbaek Construction Co.,Ltd ($1.97M), 5. Ironwood Commercial Builders Inc ($1.82M), 6. Qsjv, LLC ($1.52M), 7. Tatonka Trucking Llc. ($1.25M), 8. Paradigm Mechanical Corp. ($1.09M), 9. Bric LLC ($1.06M), 10. Sociedad Espanola De Montajes Industriales SA ($1.03M).

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