Top 100 Contractors in NAICS 562991: Septic Tank and Related Services, FY2021

Name: Top 100 Contractors in NAICS 562991: Septic Tank and Related Services, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 37% of FY2021 NAICS 562991 contract dollars

Contract obligations: $77,773,298 Net of deobligations, by contracts coded NAICS 562991
Contractors: 584 Parent companies with an obligation
Largest contractor: Meps GMBH Military Effective Projects & Services $7.04 million, 8.2% 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	Meps GMBH Military Effective Projects & Services 2 awardees, including Meps GMBH and TOI TOI & Dixi Sanitaersysteme GMBH Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$7,042,650	8.2%	Rank history: #33 in FY2022, #36 in FY2023 and not on the FY2024–FY2025 lists; up 90 since FY2020.
2	Major Contracting Services, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$4,748,275	5.6%	Rank history: #2 in FY2022, #1 in FY2023, #2 in FY2024 and #3 in FY2025; down 1 since FY2020.
3	Vantex Service Corporation Top agencies Army (Department of the Army) Navy (Department of the Navy)	$4,588,287	5.4%	Rank history: #4 in FY2022, #3 in FY2023, #6 in FY2024 and #5 in FY2025; up 2 since FY2020.
4	Ronjon Rentals Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$2,948,590	3.5%	Rank history: #1 in FY2022, #2 in FY2023, #3 in FY2024 and #2 in FY2025; down 2 since FY2020.
5	Ronjon Rentals Vantex Service Joint Venture Top agencies Navy (Department of the Navy) DHA (Defense Health Agency)	$2,592,833	3.0%	Rank history: #5 in FY2022, #6 in FY2023, #7 in FY2024 and #9 in FY2025; down 1 since FY2020.
6	Astrea Group for Trading and Contracting Top agencies Army (Department of the Army)	$2,432,791	2.8%	Rank history: #13 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
7	Saudi Naval Support Co. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$1,910,069	2.2%	Rank history: #10 in FY2022, #37 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
8	Lightware & More GMBH Top agencies Army (Department of the Army)	$1,867,802	2.2%	Rank history: #32 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
9	Lane Services LLC Top agencies Army (Department of the Army)	$1,647,746	1.9%	Rank history: #9 in FY2022 and not on the FY2023–FY2025 lists; down 6 since FY2020.
10	Skookum Educational Programs Top agencies Army (Department of the Army)	$1,411,092	1.7%	Rank history: #8 in FY2022, #10 in FY2023, #10 in FY2024 and #8 in FY2025; down 2 since FY2020.
11	B & S Services Top agencies DHS (Department of Homeland Security)	$1,396,665	1.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
12	P.u. Septic Service, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$1,268,183	1.5%	Rank history: #15 in FY2022, #9 in FY2023, #14 in FY2024 and #16 in FY2025; down 1 since FY2020.
13	Kamal Mustafa Al Sultan General Trading & Contracting Co. WLL Top agencies USAF (Department of the Air Force)	$1,237,081	1.4%	Rank history: #7 in FY2022 and not on the FY2023–FY2025 lists; up 67 since FY2020.
14	Feyen's Arcade Pumping Service, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$988,159	1.2%	Rank history: #3 in FY2022, #20 in FY2023, #20 in FY2024 and #26 in FY2025; up 22 since FY2020.
15	Imperial Restrooms, Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$958,140	1.1%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
16	Rockwell American Services, Ltd. Top agencies DHS (Department of Homeland Security)	$916,641	1.1%	Rank history: not on the FY2022–FY2025 lists; up 24 since FY2020.
17	Kwikspace Guam Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$895,106	1.0%	Rank history: #49 in FY2022 and not on the FY2023–FY2025 lists; up 110 since FY2020.
18	VIP Sanitation, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$833,488	1.0%	Rank history: #6 in FY2022, #12 in FY2023, #19 in FY2024 and #77 in FY2025; down 6 since FY2020.
19	Toou Development Co., Ltd Top agencies Army (Department of the Army)	$734,939	0.9%	Rank history: #20 in FY2022, #15 in FY2023, #24 in FY2024 and #19 in FY2025; up 27 since FY2020.
20	GPC Consolidated Reporting Top agencies USDA (Department of Agriculture)	$697,348	0.8%	Rank history: #86 in FY2022, #50 in FY2023 and not on the FY2024–FY2025 lists; up 19 since FY2020.
21	RTC Facilities Management Services LLC Top agencies USAF (Department of the Air Force)	$674,532	0.8%	Rank history: #19 in FY2022, #52 in FY2023 and not on the FY2024–FY2025 lists; up 14 since FY2020.
22	Best Way of Indiana, Inc. Top agencies Army (Department of the Army)	$630,536	0.7%	Rank history: #27 in FY2022, #24 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2020.
23	Hawaii Johns Inc. Top agencies Army (Department of the Army)	$596,936	0.7%	Rank history: #44 in FY2022, #23 in FY2023, #11 in FY2024 and #27 in FY2025; up 2 since FY2020.
24	Edmunds Waste Removal Inc. Top agencies Army (Department of the Army) DOS (Department of State)	$594,551	0.7%	Rank history: #81 in FY2022 and not on the FY2023–FY2025 lists; down 6 since FY2020.
25	Prime Veritas General Trading & Contracting Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$582,127	0.7%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
26	Bob Drayton Inc. Top agencies USAF (Department of the Air Force)	$561,280	0.7%	Rank history: #22 in FY2022, #27 in FY2023, #27 in FY2024 and #34 in FY2025; up 5 since FY2020.
27	E & D Enterprises Inc. Top agencies Army (Department of the Army)	$554,446	0.6%	Rank history: #45 in FY2022, #25 in FY2023, #25 in FY2024 and #28 in FY2025; down 10 since FY2020.
28	Providence Environmental Concepts and Services LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$512,516	0.6%	Rank history: #39 in FY2022, #42 in FY2023, #43 in FY2024 and #92 in FY2025; down 8 since FY2020.
29	Sani-Can, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$502,082	0.6%	Rank history: #23 in FY2022, #11 in FY2023, #23 in FY2024 and #33 in FY2025; up 27 since FY2020.
30	Architectural House Est. for Contracting Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$471,689	0.6%	Rank history: #12 in FY2022, #21 in FY2023, #26 in FY2024 and #24 in FY2025; up 108 since FY2020.
31	Anrige Inc. Top agencies DHS (Department of Homeland Security)	$434,515	0.5%	Rank history: #21 in FY2022, not on the FY2023 list, #36 in FY2024 and not on the FY2025 list; up 37 since FY2020.
32	Universal Dove Corp. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$433,715	0.5%	Rank history: not on the FY2022–FY2025 lists; down 4 since FY2020.
33	WAC LLC Top agencies DHS (Department of Homeland Security) USDA (Department of Agriculture) USAF (Department of the Air Force)	$415,603	0.5%	Rank history: #31 in FY2022, #29 in FY2023, #29 in FY2024 and not on the FY2025 list; down 18 since FY2020.
34	Pacific General Trading and C Ontracting Establishment Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$412,197	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
35	A-Ok Portables, LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$407,400	0.5%	Rank history: #53 in FY2022 and not on the FY2023–FY2025 lists; down 12 since FY2020.
36	Stergioulas Filippos & Co O.E Top agencies Army (Department of the Army)	$385,387	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
37	US ECO Products Corp Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$384,736	0.5%	Rank history: #34 in FY2022, #38 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2020.
38	LJH Services Inc. Top agencies DHS (Department of Homeland Security)	$378,092	0.4%	Rank history: #16 in FY2022, #57 in FY2023 and not on the FY2024–FY2025 lists; up 227 since FY2020.
39	Paju Sanitation Corp. Top agencies Army (Department of the Army)	$374,009	0.4%	Rank history: #58 in FY2022, #91 in FY2023, #81 in FY2024 and not on the FY2025 list; down 7 since FY2020.
40	BPM Services Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$371,604	0.4%	Rank history: #61 in FY2022, #39 in FY2023, #46 in FY2024 and #79 in FY2025; up 81 since FY2020.
41	Mondak Portables LLC Top agencies USAF (Department of the Air Force)	$358,200	0.4%	Rank history: #54 in FY2022, #28 in FY2023, #28 in FY2024 and #68 in FY2025; down 12 since FY2020.
42	D&M Pumping LLC Top agencies USSOCOM (United States Special Operations Command) DOI (Department of the Interior) DOE (Department of Energy)	$354,194	0.4%	Rank history: #50 in FY2022, #59 in FY2023 and not on the FY2024–FY2025 lists; down 9 since FY2020.
43	United Site Services of Nevada, Inc. 2 awardees Top agencies Army (Department of the Army) Navy (Department of the Navy) VA (Department of Veterans Affairs)	$333,911	0.4%	Rank history: #57 in FY2022, #18 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
44	Red Orange North America Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DOI (Department of the Interior)	$325,105	0.4%	Rank history: #17 in FY2022, #77 in FY2023, #73 in FY2024 and not on the FY2025 list; up 50 since FY2020.
45	Daemyung Construction Co. Ltd. Top agencies USAF (Department of the Air Force)	$324,304	0.4%	Rank history: not on the FY2022–FY2025 lists; down 26 since FY2020.
46	Critical Contingency Solutions LLC Top agencies Army (Department of the Army)	$316,832	0.4%	Rank history: #36 in FY2022, #13 in FY2023, #16 in FY2024 and #17 in FY2025; new, not ranked in FY2020.
47	United Site Services of California Inc. Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture) Army (Department of the Army)	$316,288	0.4%	Rank history: #84 in FY2022, #62 in FY2023, not on the FY2024 list and #93 in FY2025; up 17 since FY2020.
48	Weidner Enterprises, Inc. Top agencies Army (Department of the Army)	$314,280	0.4%	Rank history: #26 in FY2022, not on the FY2023 list, #30 in FY2024 and #36 in FY2025; new, not ranked in FY2020.
49	Proeko Servis, TOV Top agencies Army (Department of the Army)	$294,158	0.3%	Rank history: not on the FY2022–FY2025 lists; up 3 since FY2020.
50	Knight's Site Services, Inc. Top agencies USDA (Department of Agriculture)	$290,219	0.3%	Rank history: not on the FY2022–FY2025 lists; up 87 since FY2020.
51	Cumberland Septic Services Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$285,433	0.3%	Rank history: #43 in FY2022, #41 in FY2023, #39 in FY2024 and #44 in FY2025; down 42 since FY2020.
52	Namdo Sanitation Co. Ltd Top agencies Army (Department of the Army)	$280,954	0.3%	Rank history: not on the FY2022 list, #99 in FY2023, #61 in FY2024 and #71 in FY2025; up 81 since FY2020.
53	CR & R Inc. Top agencies DHS (Department of Homeland Security)	$272,790	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
54	1 Call Septic Service, Inc. Top agencies USAF (Department of the Air Force)	$265,600	0.3%	Rank history: #67 in FY2022 and not on the FY2023–FY2025 lists; down 6 since FY2020.
55	Republic Services Inc. 2 awardees, including Montana Waste Systems, Inc. and Lewistown Disposal, Inc. Top agencies USAF (Department of the Air Force) DOI (Department of the Interior)	$263,407	0.3%	Rank history: #64 in FY2022 and not on the FY2023–FY2025 lists; up 216 since FY2020.
56	Mariposa Portable Santitation LLC Top agencies DOI (Department of the Interior)	$262,190	0.3%	Rank history: #35 in FY2022, #30 in FY2023, #45 in FY2024 and #55 in FY2025; down 11 since FY2020.
57	Okinawaken Sangyo Haikibutsushori Cooperative Association Top agencies USAF (Department of the Air Force)	$260,723	0.3%	Rank history: #37 in FY2022, #35 in FY2023, #57 in FY2024 and #52 in FY2025; down 4 since FY2020.
58	Chamberlin & Wingert Sanitary Services LLC Top agencies Army (Department of the Army) DOI (Department of the Interior)	$259,672	0.3%	Rank history: #72 in FY2022, #96 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2020.
59	High Sierra Toilet Company, Inc. Top agencies USAF (Department of the Air Force)	$258,930	0.3%	Rank history: #18 in FY2022, #80 in FY2023 and not on the FY2024–FY2025 lists; down 52 since FY2020.
60	Wise Environmental Solutions Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$254,332	0.3%	Rank history: #65 in FY2022, not on the FY2023 list, #31 in FY2024 and not on the FY2025 list; down 16 since FY2020.
61	Way Point Commercial Broker L.l.c Top agencies Navy (Department of the Navy)	$239,457	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
62	Ridgecrest Septic Services Inc. Top agencies Navy (Department of the Navy)	$232,231	0.3%	Rank history: #52 in FY2022, #83 in FY2023, #89 in FY2024 and not on the FY2025 list; up 97 since FY2020.
63	Portable Toilets of Fayetteville Inc. Top agencies Army (Department of the Army)	$228,163	0.3%	Rank history: #77 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
64	Expert Depot S.R.L. Top agencies Navy (Department of the Navy)	$218,004	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
65	DAE IL Sanitary Public Corporation Top agencies Army (Department of the Army)	$211,209	0.2%	Rank history: #55 in FY2022, #49 in FY2023, #80 in FY2024 and #62 in FY2025; down 14 since FY2020.
66	Smith Jennifer Franco Top agencies Army (Department of the Army)	$209,146	0.2%	Rank history: not on the FY2022–FY2025 lists; up 137 since FY2020.
67	Paula Watkins Top agencies Army (Department of the Army) USDA (Department of Agriculture)	$208,234	0.2%	Rank history: #80 in FY2022, #78 in FY2023, #82 in FY2024 and #78 in FY2025; down 30 since FY2020.
68	Sangster Warner Consulting Group LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$207,622	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
69	Fayzamerica LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$206,290	0.2%	Rank history: #68 in FY2022 and not on the FY2023–FY2025 lists; up 8 since FY2020.
70	Ecology Mir Group LLC Top agencies DOI (Department of the Interior) Army (Department of the Army) USAF (Department of the Air Force)	$198,598	0.2%	Rank history: #69 in FY2022, #31 in FY2023, #53 in FY2024 and not on the FY2025 list; down 44 since FY2020.
71	Hosan Sanitation Co., Ltd. Top agencies Army (Department of the Army)	$197,475	0.2%	Rank history: #29 in FY2022, #54 in FY2023, #88 in FY2024 and #67 in FY2025; up 45 since FY2020.
72	Consolidated Transportation Services Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$195,435	0.2%	Rank history: #75 in FY2022, not on the FY2023–FY2024 lists and #40 in FY2025; up 30 since FY2020.
73	Attention To Detail Management Corp. Top agencies DHS (Department of Homeland Security)	$195,209	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
74	Bison Group, Inc. Top agencies DOI (Department of the Interior) Army (Department of the Army) DLA (Defense Logistics Agency)	$194,848	0.2%	Rank history: not on the FY2022 list, #75 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2020.
75	Kyongjinkiup Co., Ltd. Top agencies Army (Department of the Army)	$193,278	0.2%	Rank history: not on the FY2022 list, #47 in FY2023, #70 in FY2024 and #66 in FY2025; up 13 since FY2020.
76	Todo Mauleg Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$193,271	0.2%	Rank history: #95 in FY2022, #69 in FY2023, #87 in FY2024 and #70 in FY2025; down 19 since FY2020.
77	Cobalt Equipment, Inc. Top agencies Army (Department of the Army)	$190,821	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
78	American Engineering Corporation 2 awardees, including Oshima Shokai Co., Ltd. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$186,470	0.2%	Rank history: not on the FY2022–FY2025 lists; up 266 since FY2020.
79	Waste Management, Inc. Through Waste Management of Colorado, Inc. Top agencies DOI (Department of the Interior)	$185,840	0.2%	Rank history: not on the FY2022 list, #87 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
80	Samchong Corporation Top agencies USAF (Department of the Air Force)	$181,561	0.2%	Rank history: #94 in FY2022, not on the FY2023–FY2024 lists and #100 in FY2025; down 9 since FY2020.
81	Above All Sanitation, Inc. Top agencies Army (Department of the Army) USDA (Department of Agriculture) DOI (Department of the Interior)	$177,471	0.2%	Rank history: not on the FY2022–FY2024 lists and #91 in FY2025; up 14 since FY2020.
82	Eure Inc. Top agencies Navy (Department of the Navy)	$174,068	0.2%	Rank history: #90 in FY2022 and not on the FY2023–FY2025 lists; down 13 since FY2020.
83	Aqua Pumping LLC Top agencies Army (Department of the Army) DOI (Department of the Interior) Navy (Department of the Navy)	$168,910	0.2%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
84	Busy Bee Septic, LLC Top agencies DHS (Department of Homeland Security)	$166,707	0.2%	Rank history: not on the FY2022–FY2025 lists; up 45 since FY2020.
85	Ivan's Site Services, Inc. Top agencies Army (Department of the Army)	$165,241	0.2%	Rank history: not on the FY2022 list, #55 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
86	Mighty Vac, L.l.c Top agencies USAF (Department of the Air Force)	$160,928	0.2%	Rank history: not on the FY2022–FY2025 lists; down 13 since FY2020.
87	Septic Medic Inc. Top agencies USDA (Department of Agriculture)	$158,262	0.2%	Rank history: not on the FY2022–FY2025 lists; up 10 since FY2020.
88	USA Up Star LLC Top agencies Army (Department of the Army)	$157,450	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
89	Ben Toilet Rentals, Inc. Top agencies USAF (Department of the Air Force) USDA (Department of Agriculture)	$156,995	0.2%	Rank history: not on the FY2022–FY2025 lists; up 46 since FY2020.
90	Jamal Al-Mansour Company for Trading & Services Ltd. Top agencies Army (Department of the Army)	$156,669	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
91	Portable Toilets LLC Top agencies Army (Department of the Army)	$155,779	0.2%	Rank history: #85 in FY2022, not on the FY2023 list, #86 in FY2024 and not on the FY2025 list; up 10 since FY2020.
92	Parks Portable Toilets, Inc. Top agencies Navy (Department of the Navy) USSOCOM (United States Special Operations Command)	$155,642	0.2%	Rank history: #78 in FY2022 and not on the FY2023–FY2025 lists; up 17 since FY2020.
93	Waste and Water Logistics, LLC Top agencies DOI (Department of the Interior)	$155,626	0.2%	Rank history: #60 in FY2022, #70 in FY2023, #34 in FY2024 and #38 in FY2025; down 14 since FY2020.
94	Rent-A-Can Toilet Co., Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$151,790	0.2%	Rank history: not on the FY2022–FY2025 lists; up 143 since FY2020.
95	BSE Performance, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) DHS (Department of Homeland Security)	$148,421	0.2%	Rank history: #87 in FY2022 and not on the FY2023–FY2025 lists; up 54 since FY2020.
96	Big Valley Sanitation Inc. 2 awardees, including Big Valley Septic Service Top agencies DOI (Department of the Interior) USDA (Department of Agriculture) DOE (Department of Energy)	$145,997	0.2%	Rank history: #42 in FY2022, #17 in FY2023, not on the FY2024 list and #53 in FY2025; down 34 since FY2020.
97	New South Restrooms LLC Top agencies DOJ (Department of Justice)	$144,050	0.2%	Rank history: not on the FY2022–FY2025 lists; up 70 since FY2020.
98	Omang Technologies & Trading L.l.c Top agencies Navy (Department of the Navy)	$143,580	0.2%	Rank history: not on the FY2022–FY2025 lists; down 64 since FY2020.
99	Chair & Equipment Rentals Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DHS (Department of Homeland Security)	$141,771	0.2%	Rank history: not on the FY2022–FY2025 lists; up 43 since FY2020.
100	Baygreen, Inc. Top agencies Army (Department of the Army)	$141,462	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.

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100 of 584 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 $85.4 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 2021 ran Oct 1, 2020 – Sep 30, 2021. 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 FY2020. "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 FY2020 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 562991 contractors in FY2021?

1. Meps GMBH Military Effective Projects & Services ($7.04M), 2. Major Contracting Services, Inc. ($4.75M), 3. Vantex Service Corporation ($4.59M), 4. Ronjon Rentals Inc. ($2.95M), 5. Ronjon Rentals Vantex Service Joint Venture ($2.59M), 6. Astrea Group for Trading and Contracting ($2.43M), 7. Saudi Naval Support Co. ($1.91M), 8. Lightware & More GMBH ($1.87M), 9. Lane Services LLC ($1.65M), 10. Skookum Educational Programs ($1.41M).

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