Top 100 Contractors in NAICS 5621: Waste Collection, FY2021

Name: Top 100 Contractors in NAICS 5621: Waste Collection, FY2021
Creator: GovTribe

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

The top 10 won 25% of FY2021 NAICS 5621 contract dollars

Contract obligations: $311,886,656 Net of deobligations, by contracts coded NAICS 5621 or a code under it
Contractors: 962 Parent companies with an obligation
Largest contractor: Couvillion Group LLC $12.5 million, 3.4% 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	Couvillion Group LLC Top agencies DHS (Department of Homeland Security)	$12,495,506	3.4%	Rank history: #58 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
2	Six-Nations Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$12,328,131	3.3%	Rank history: #20 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
3	Hamilton Alliance Inc. Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy) Army (Department of the Army)	$12,199,484	3.3%	Rank history: #2 in FY2022, #2 in FY2023, #2 in FY2024 and #7 in FY2025; unchanged since FY2020.
4	Yamaki Co., Ltd. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$11,688,712	3.2%	Rank history: #3 in FY2022, #4 in FY2023, #6 in FY2024 and #10 in FY2025; down 2 since FY2020.
5	Waste Management, Inc. 115 awardees, including USA Waste of California, Inc., Waste Management of New Jersey, Inc. and Advanced Disposal Services Solid Waste Southeast Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$10,353,769	2.8%	Rank history: #4 in FY2022, #5 in FY2023, #58 in FY2024 and not on the FY2025 list; up 1 since FY2020.
6	Perry Management Corp of South Dakota, L.l.c Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$7,760,019	2.1%	Rank history: #7 in FY2022, #7 in FY2023, #4 in FY2024 and #9 in FY2025; up 12 since FY2020.
7	Neie Medical Waste Services, LLC Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) Army (Department of the Army)	$7,311,618	2.0%	Rank history: #11 in FY2022, #14 in FY2023, #9 in FY2024 and #18 in FY2025; down 2 since FY2020.
8	Dorado Services, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$6,407,797	1.7%	Rank history: #12 in FY2022, #6 in FY2023, #10 in FY2024 and #16 in FY2025; down 1 since FY2020.
9	VMX International LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) DOI (Department of the Interior)	$5,845,453	1.6%	Rank history: #23 in FY2022, #46 in FY2023, #76 in FY2024 and not on the FY2025 list; up 5 since FY2020.
10	Ecology Services Inc. Top agencies HHS (Department of Health and Human Services)	$5,643,837	1.5%	Rank history: #14 in FY2022, #11 in FY2023, #14 in FY2024 and #17 in FY2025; up 2 since FY2020.
11	Kankyo Solution Co. Ltd. 2 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$5,468,485	1.5%	Rank history: #16 in FY2022, #22 in FY2023, #34 in FY2024 and not on the FY2025 list; down 3 since FY2020.
12	Guahan Waste Control, Inc. Top agencies Navy (Department of the Navy) DECA (Defense Commissary Agency) Commerce (Department of Commerce)	$5,379,611	1.5%	Rank history: #5 in FY2022, #3 in FY2023, #5 in FY2024 and #14 in FY2025; up 7 since FY2020.
13	Mark Dunning Industries Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$5,031,033	1.4%	Rank history: #19 in FY2022, #18 in FY2023, #13 in FY2024 and #25 in FY2025; unchanged since FY2020.
14	Landscape Management Systems, Inc. Top agencies Navy (Department of the Navy) DECA (Defense Commissary Agency) DLA (Defense Logistics Agency)	$4,930,324	1.3%	Rank history: #26 in FY2022, #27 in FY2023, #22 in FY2024 and #31 in FY2025; up 16 since FY2020.
15	Clean Venture Inc. Top agencies HHS (Department of Health and Human Services)	$4,900,828	1.3%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
16	Earth Smart Environmental Solutions LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$4,816,039	1.3%	Rank history: #13 in FY2022, #15 in FY2023, #8 in FY2024 and #23 in FY2025; up 4 since FY2020.
17	Triumvirate Environmental, LLC Top agencies HHS (Department of Health and Human Services) Commerce (Department of Commerce) VA (Department of Veterans Affairs)	$4,727,433	1.3%	Rank history: #25 in FY2022, #13 in FY2023, #7 in FY2024 and #13 in FY2025; up 5 since FY2020.
18	Specpro Professional Services, LLC Top agencies Army (Department of the Army)	$4,603,912	1.2%	Rank history: not on the FY2022–FY2025 lists; up 7 since FY2020.
19	Republic Services Inc. 55 awardees, including Allied Waste Transportation Inc., Rabanco Ltd and Montana Waste Systems, Inc. Top agencies DOI (Department of the Interior) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$4,402,317	1.2%	Rank history: #15 in FY2022, #16 in FY2023, #3 in FY2024 and #8 in FY2025; up 15 since FY2020.
20	Jfe-K Scrap JV Top agencies Navy (Department of the Navy)	$4,302,181	1.2%	Rank history: #8 in FY2022, #17 in FY2023, #23 in FY2024 and #22 in FY2025; down 11 since FY2020.
21	Zero Waste Solutions, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$3,902,569	1.1%	Rank history: #9 in FY2022, #10 in FY2023, #11 in FY2024 and #26 in FY2025; down 5 since FY2020.
22	Coqui Disposal Services, LLC Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security)	$3,825,218	1.0%	Rank history: #35 in FY2022, #39 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
23	Pacific Commercial Services, Inc. Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs)	$3,798,982	1.0%	Rank history: #39 in FY2022, #51 in FY2023, #33 in FY2024 and #82 in FY2025; up 40 since FY2020.
24	Honolulu Disposal Service, Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DOI (Department of the Interior)	$3,696,609	1.0%	Rank history: #27 in FY2022, #69 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
25	Edco Disposal Corp Top agencies Navy (Department of the Navy)	$3,636,989	1.0%	Rank history: #22 in FY2022, #19 in FY2023, #15 in FY2024 and #15 in FY2025; down 2 since FY2020.
26	Kurashiki, Co.,Ltd. Top agencies Navy (Department of the Navy)	$3,503,293	0.9%	Rank history: #21 in FY2022, #24 in FY2023, #17 in FY2024 and #11 in FY2025; new, not ranked in FY2020.
27	Greener Construction Services, Inc. Top agencies GSA (General Services Administration) Army (Department of the Army) AFRH (Armed Forces Retirement Home)	$3,032,081	0.8%	Rank history: #31 in FY2022, #38 in FY2023, #40 in FY2024 and #42 in FY2025; up 57 since FY2020.
28	Navajo Sanitation, Inc. Top agencies DOI (Department of the Interior) HHS (Department of Health and Human Services)	$3,010,859	0.8%	Rank history: #36 in FY2022, #26 in FY2023, #29 in FY2024 and #32 in FY2025; up 8 since FY2020.
29	Advant-Edge Solutions of Middle Atlantic Inc. Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) GSA (General Services Administration)	$2,916,724	0.8%	Rank history: #40 in FY2022, #45 in FY2023, #31 in FY2024 and #43 in FY2025; up 9 since FY2020.
30	Recology Inc. 8 awardees, including Sunset Scavenger Co, Recology Yuba-Sutter and Golden Gate Disposal & Recycling Co Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) DOI (Department of the Interior)	$2,895,600	0.8%	Rank history: #38 in FY2022, #58 in FY2023, #41 in FY2024 and #40 in FY2025; up 23 since FY2020.
31	DBI Waste Systems Inc. Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) Army (Department of the Army)	$2,814,474	0.8%	Rank history: #32 in FY2022, #29 in FY2023, #36 in FY2024 and #27 in FY2025; up 16 since FY2020.
32	Donato Marangi, Inc. Top agencies Army (Department of the Army) Treasury (Department of the Treasury) DECA (Defense Commissary Agency)	$2,812,132	0.8%	Rank history: #17 in FY2022, #77 in FY2023, #19 in FY2024 and #57 in FY2025; down 4 since FY2020.
33	Marco-Onopa JV, Llc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$2,646,530	0.7%	Rank history: #64 in FY2022 and not on the FY2023–FY2025 lists; up 4 since FY2020.
34	Fincantieri Marine Systems North America Inc. 4 awardees, including Comune DI Vicenza and Comune DI Pisa Top agencies Army (Department of the Army)	$2,514,634	0.7%	Rank history: #41 in FY2022, #37 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2020.
35	Clean Recycle Company, Ltd Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$2,511,403	0.7%	Rank history: #54 in FY2022, #66 in FY2023 and not on the FY2024–FY2025 lists; down 24 since FY2020.
36	GEO International Management, LLC Top agencies Army (Department of the Army)	$2,472,206	0.7%	Rank history: #42 in FY2022, #35 in FY2023, #39 in FY2024 and #34 in FY2025; down 26 since FY2020.
37	Biffa Waste Services Ltd Top agencies USAF (Department of the Air Force)	$2,421,524	0.7%	Rank history: #30 in FY2022 and not on the FY2023–FY2025 lists; down 11 since FY2020.
38	Perikin Enterprises LLC Top agencies Army (Department of the Army)	$2,401,847	0.7%	Rank history: not on the FY2022–FY2025 lists; up 49 since FY2020.
39	Veolia Water North America-West LLC 2 awardees, including Veolia Umweltservice Sued GMBH & Co. KG and Veolia Es Technical Solutions LLC Top agencies Army (Department of the Army) Treasury (Department of the Treasury) USDA (Department of Agriculture)	$2,208,918	0.6%	Rank history: #24 in FY2022, not on the FY2023 list, #80 in FY2024 and not on the FY2025 list; down 12 since FY2020.
40	Kenhoku Eiseisha Co.,Ltd. Top agencies Navy (Department of the Navy)	$2,198,676	0.6%	Rank history: not on the FY2022–FY2025 lists; up 3 since FY2020.
41	Native Services LLC Top agencies Army (Department of the Army)	$2,198,464	0.6%	Rank history: #46 in FY2022, #42 in FY2023, #32 in FY2024 and #38 in FY2025; down 1 since FY2020.
42	Specpro Sustainment and Environmental, LLC Top agencies Army (Department of the Army)	$2,198,160	0.6%	Rank history: #6 in FY2022, #25 in FY2023, #54 in FY2024 and #63 in FY2025; new, not ranked in FY2020.
43	Yongma Service Corporation Top agencies Army (Department of the Army)	$2,163,448	0.6%	Rank history: #29 in FY2022, #23 in FY2023, #37 in FY2024 and #35 in FY2025; up 2 since FY2020.
44	RAS Enterprises LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) AFRH (Armed Forces Retirement Home)	$2,125,350	0.6%	Rank history: #45 in FY2022, #59 in FY2023, #75 in FY2024 and #83 in FY2025; down 5 since FY2020.
45	Jakob Becker Entsorgungs-GMBH Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$2,105,706	0.6%	Rank history: #55 in FY2022, #63 in FY2023, #55 in FY2024 and #61 in FY2025; up 33 since FY2020.
46	US Ecology, Inc. 4 awardees, including US Ecology Washington Inc. and NRC Environmental Services Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) USDA (Department of Agriculture)	$2,099,605	0.6%	Rank history: #81 in FY2022, #92 in FY2023 and not on the FY2024–FY2025 lists; up 15 since FY2020.
47	Waste Connections US Holdings Inc. 28 awardees, including Waste Connections of Alaska, Inc., Waste Connections of Florida, Inc. and Harold Lemay Enterprises, Incorporated Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs) DOJ (Department of Justice)	$2,040,274	0.6%	Rank history: #49 in FY2022, #48 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
48	Loop Inc. Top agencies USAF (Department of the Air Force)	$1,990,447	0.5%	Rank history: #47 in FY2022, #53 in FY2023, #56 in FY2024 and #45 in FY2025; down 2 since FY2020.
49	Wastesolutions LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) DOI (Department of the Interior)	$1,867,104	0.5%	Rank history: #52 in FY2022, not on the FY2023 list, #94 in FY2024 and #80 in FY2025; up 1 since FY2020.
50	J Torres Co Inc. Top agencies USAF (Department of the Air Force)	$1,717,795	0.5%	Rank history: #57 in FY2022, #55 in FY2023, #49 in FY2024 and #56 in FY2025; up 5 since FY2020.
51	Livingstone Trading & Contracting Top agencies USAF (Department of the Air Force)	$1,692,974	0.5%	Rank history: #83 in FY2022, #64 in FY2023, #69 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
52	Terasense, Inc. Top agencies Army (Department of the Army)	$1,648,127	0.4%	Rank history: not on the FY2022–FY2025 lists; up 4 since FY2020.
53	Professional Waste Management LLC Top agencies USAF (Department of the Air Force)	$1,598,477	0.4%	Rank history: #34 in FY2022, #76 in FY2023, #45 in FY2024 and #60 in FY2025; up 64 since FY2020.
54	RJS Disposal Service Inc. Top agencies DOS (Department of State) Commerce (Department of Commerce) DOJ (Department of Justice)	$1,578,178	0.4%	Rank history: not on the FY2022 list, #100 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
55	Stericycle Inc. 2 awardees Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$1,563,662	0.4%	Rank history: #98 in FY2022 and not on the FY2023–FY2025 lists; down 7 since FY2020.
56	Marco Federal Services LLC 2 awardees Top agencies USAF (Department of the Air Force) Army (Department of the Army) GSA (General Services Administration)	$1,534,686	0.4%	Rank history: #51 in FY2022, #34 in FY2023, #18 in FY2024 and #20 in FY2025; up 105 since FY2020.
57	Haztrain Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$1,529,882	0.4%	Rank history: #62 in FY2022, #67 in FY2023, #64 in FY2024 and #66 in FY2025; up 2 since FY2020.
58	Onaka-Nisiko JV Top agencies Navy (Department of the Navy)	$1,529,341	0.4%	Rank history: #59 in FY2022, #62 in FY2023, #83 in FY2024 and #54 in FY2025; new, not ranked in FY2020.
59	The Chenega Corporation 2 awardees, including Chenega Integrated Security Solutions, LLC and Chenega Healthcare Services LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$1,432,751	0.4%	Rank history: #61 in FY2022, #78 in FY2023, #87 in FY2024 and not on the FY2025 list; up 6 since FY2020.
60	Southern Technology Professional Consulting Service LLC Top agencies Army (Department of the Army)	$1,330,450	0.4%	Rank history: #43 in FY2022, #40 in FY2023, #27 in FY2024 and #53 in FY2025; down 25 since FY2020.
61	Grundy Government Services, LLC Top agencies Army (Department of the Army)	$1,308,993	0.4%	Rank history: #65 in FY2022 and not on the FY2023–FY2025 lists; up 3 since FY2020.
62	City of Port Hueneme Top agencies Navy (Department of the Navy)	$1,296,596	0.4%	Rank history: #69 in FY2022, #72 in FY2023, #70 in FY2024 and #70 in FY2025; up 8 since FY2020.
63	Lane Services LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$1,273,066	0.3%	Rank history: #82 in FY2022, #86 in FY2023, #96 in FY2024 and #94 in FY2025; up 25 since FY2020.
64	Batista-Dorado JV2 Top agencies Navy (Department of the Navy)	$1,266,123	0.3%	Rank history: #44 in FY2022, #32 in FY2023, #53 in FY2024 and #62 in FY2025; new, not ranked in FY2020.
65	Mellor Engineering Inc. Top agencies Army (Department of the Army)	$1,263,549	0.3%	Rank history: #50 in FY2022, #41 in FY2023 and not on the FY2024–FY2025 lists; down 16 since FY2020.
66	Batista - Dorado JV Top agencies Navy (Department of the Navy) Army (Department of the Army) DHS (Department of Homeland Security)	$1,260,955	0.3%	Rank history: #48 in FY2022 and not on the FY2023–FY2025 lists; down 35 since FY2020.
67	Mabbett & Associates, Inc. Top agencies VA (Department of Veterans Affairs)	$1,244,184	0.3%	Rank history: #70 in FY2022, #44 in FY2023, #59 in FY2024 and #58 in FY2025; up 2 since FY2020.
68	Pyungtaek Environment Co.,Ltd Top agencies USAF (Department of the Air Force)	$1,182,229	0.3%	Rank history: #73 in FY2022, #79 in FY2023, #84 in FY2024 and #75 in FY2025; down 1 since FY2020.
69	Bates Trucking Company Incorporated Top agencies Army (Department of the Army) DOI (Department of the Interior)	$1,177,749	0.3%	Rank history: not on the FY2022 list, #75 in FY2023, #85 in FY2024 and not on the FY2025 list; down 15 since FY2020.
70	County of Kitsap Top agencies Navy (Department of the Navy)	$1,093,750	0.3%	Rank history: #71 in FY2022, #83 in FY2023, #67 in FY2024 and #81 in FY2025; down 8 since FY2020.
71	L & P Scientific Consulting LLC Top agencies Army (Department of the Army)	$1,050,248	0.3%	Rank history: not on the FY2022–FY2025 lists; up 108 since FY2020.
72	City of Monterey 2 awardees Top agencies Army (Department of the Army) Navy (Department of the Navy)	$1,028,628	0.3%	Rank history: #79 in FY2022, #91 in FY2023, #78 in FY2024 and not on the FY2025 list; up 53 since FY2020.
73	Birdon America Inc. Top agencies Navy (Department of the Navy)	$993,722	0.3%	Rank history: #78 in FY2022, #61 in FY2023, #62 in FY2024 and #67 in FY2025; new, not ranked in FY2020.
74	Seres Engineering & Services LLC Top agencies EPA (Environmental Protection Agency) Navy (Department of the Navy) CSOSA (Court Services and Offender Supervision Agency)	$975,994	0.3%	Rank history: #100 in FY2022, #56 in FY2023, #51 in FY2024 and #71 in FY2025; up 90 since FY2020.
75	C & M Industries, Inc. Top agencies Navy (Department of the Navy)	$955,095	0.3%	Rank history: #86 in FY2022, not on the FY2023 list, #72 in FY2024 and not on the FY2025 list; up 5 since FY2020.
76	Kanagawa Hoken Jigyousha Co.,Ltd. Top agencies Navy (Department of the Navy)	$950,816	0.3%	Rank history: #75 in FY2022, #80 in FY2023, not on the FY2024 list and #95 in FY2025; down 1 since FY2020.
77	Jerome L Taylor Trucking Inc. Top agencies Army (Department of the Army)	$949,135	0.3%	Rank history: #77 in FY2022, #96 in FY2023, #74 in FY2024 and not on the FY2025 list; up 57 since FY2020.
78	Desert Dump Truck Rental, Inc. Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$935,000	0.3%	Rank history: #72 in FY2022 and not on the FY2023–FY2025 lists; down 4 since FY2020.
79	Alpha Demolitions , Inc. Top agencies USDA (Department of Agriculture)	$926,294	0.3%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
80	Kankyo Seibi Co.,Ltd. Top agencies USAF (Department of the Air Force)	$913,585	0.2%	Rank history: not on the FY2022–FY2025 lists; up 22 since FY2020.
81	Klein Engineering PSC Top agencies USDA (Department of Agriculture)	$886,203	0.2%	Rank history: not on the FY2022–FY2025 lists; up 118 since FY2020.
82	United Site Services, Inc. 3 awardees, including United Site Services of Texas, Inc. and United Site Services of Maryland, Inc. Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice)	$867,404	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
83	Columbia Navigation, Inc. Top agencies DOI (Department of the Interior)	$815,989	0.2%	Rank history: #85 in FY2022, not on the FY2023–FY2024 lists and #74 in FY2025; up 6 since FY2020.
84	Hosan Environment Co., Ltd. Top agencies Army (Department of the Army)	$796,569	0.2%	Rank history: #91 in FY2022 and not on the FY2023–FY2025 lists; up 10 since FY2020.
85	GPC Consolidated Reporting Top agencies USDA (Department of Agriculture)	$791,384	0.2%	Rank history: not on the FY2022–FY2025 lists; down 6 since FY2020.
86	Robinson Waste Services LLC Top agencies USAF (Department of the Air Force) Treasury (Department of the Treasury)	$780,805	0.2%	Rank history: #66 in FY2022, not on the FY2023 list, #92 in FY2024 and #85 in FY2025; up 11 since FY2020.
87	Century Waste Services LLC Top agencies DOJ (Department of Justice) DHS (Department of Homeland Security) Army (Department of the Army)	$746,914	0.2%	Rank history: not on the FY2022–FY2025 lists; up 18 since FY2020.
88	Itm4G LLC Top agencies VA (Department of Veterans Affairs)	$723,761	0.2%	Rank history: #96 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
89	Corporate Waste Solutions LLC Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$695,239	0.2%	Rank history: #67 in FY2022, #28 in FY2023, #28 in FY2024 and #29 in FY2025; up 47 since FY2020.
90	Meltec Ltd. Top agencies Navy (Department of the Navy)	$689,455	0.2%	Rank history: not on the FY2022–FY2025 lists; up 25 since FY2020.
91	Active Recycling Co., Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice)	$688,810	0.2%	Rank history: #95 in FY2022 and not on the FY2023–FY2025 lists; up 8 since FY2020.
92	Boulder Disposal Inc. Top agencies DOI (Department of the Interior)	$675,246	0.2%	Rank history: not on the FY2022 list, #89 in FY2023, #99 in FY2024 and not on the FY2025 list; down 2 since FY2020.
93	Jaedong Environment Top agencies Army (Department of the Army)	$672,520	0.2%	Rank history: #99 in FY2022, #94 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
94	Street Legal Industries LLC Top agencies DOI (Department of the Interior)	$671,121	0.2%	Rank history: not on the FY2022–FY2023 lists, #25 in FY2024 and #37 in FY2025; down 1 since FY2020.
95	Set the Standard, LLC Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$665,760	0.2%	Rank history: #80 in FY2022, #95 in FY2023, not on the FY2024 list and #100 in FY2025; up 139 since FY2020.
96	Environmental Logistics, Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice)	$658,792	0.2%	Rank history: not on the FY2022–FY2025 lists; up 214 since FY2020.
97	Reg Products, LLC Top agencies VA (Department of Veterans Affairs)	$657,733	0.2%	Rank history: not on the FY2022–FY2025 lists; up 7 since FY2020.
98	Republic Services of Indiana, Limited Partnership Top agencies Army (Department of the Army) Navy (Department of the Navy)	$633,389	0.2%	Rank history: not on the FY2022–FY2025 lists; up 11 since FY2020.
99	Tri-County Recycling Inc. Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) DHS (Department of Homeland Security)	$633,125	0.2%	Rank history: #94 in FY2022, #60 in FY2023, #66 in FY2024 and #65 in FY2025; up 57 since FY2020.
100	Source Environmental Inc. Top agencies Commerce (Department of Commerce) DOJ (Department of Justice) USDA (Department of Agriculture)	$630,617	0.2%	Rank history: not on the FY2022–FY2025 lists; up 144 since FY2020.

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100 of 962 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 5621

Code	Net obligations	Largest contractor
56211 Waste Collection	$311,886,656	Couvillion Group 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 $369 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 5621 contractors in FY2021?

1. Couvillion Group LLC ($12.5M), 2. Six-Nations Inc. ($12.3M), 3. Hamilton Alliance Inc. ($12.2M), 4. Yamaki Co., Ltd. ($11.7M), 5. Waste Management, Inc. ($10.4M), 6. Perry Management Corp of South Dakota, L.l.c ($7.76M), 7. Neie Medical Waste Services, LLC ($7.31M), 8. Dorado Services, Inc. ($6.41M), 9. VMX International LLC ($5.85M), 10. Ecology Services Inc. ($5.64M).

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