Top 100 Contractors in NAICS 562: Waste Management and Remediation Services, Aug 2025–Jul 2026
Parent companies by net contract obligations Aug 1, 2025 – Jul 31, 2026 Code page on GovTribe
The latest 12 months. See the newest fiscal year's list: Top Contractors in NAICS 562: Waste Management and Remediation Services, FY2025.
The top 10 won 49% of NAICS 562 contract dollars from August 2025 through July 2026
Ranking facts
- Contract obligations
- $8,306,950,672 Net of deobligations, by contracts coded NAICS 562 or a code under it
- Contractors
- 2,524 Parent companies with an obligation
- Largest contractor
- Amentum Holdings, Inc. $2.02 billion, 20.9% of obligations
- Data as of
Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 | $2,023,320,115 | |||
| 2 | $914,414,089 | |||
| 3 | $890,912,411 | |||
| 4 | $143,819,066 | |||
| 5 | $142,010,019 | |||
| 6 | $131,645,900 | |||
| 7 | $129,889,084 | |||
| 8 |
Guidehouse Inc.
|
$128,718,006 | ||
| 9 | $122,330,141 | |||
| 10 | $120,223,243 | |||
| 11 | $119,599,732 | |||
| 12 |
Bechtel Corp
Top agencies
|
$118,193,551 | ||
| 13 | $113,700,412 | |||
| 14 | $107,422,566 | |||
| 15 |
EA Engineering Science and Technology Inc. PBC
|
$106,530,592 | ||
| 16 | $91,702,308 | |||
| 17 |
Kemron Environmental Services Inc.
|
$89,687,007 | ||
| 18 | $86,379,104 | |||
| 19 | $81,204,383 | |||
| 20 |
Ashbritt Inc.
Top agencies
|
$80,227,533 | ||
| 21 | $78,867,311 | |||
| 22 |
Energy Technology Alliance LLC
Top agencies
|
$74,652,812 | ||
| 23 | $64,198,993 | |||
| 24 | $52,695,529 | |||
| 25 | $49,412,997 | |||
| 26 |
Oneida Environmental, LLC
Top agencies
|
$48,508,918 | ||
| 27 | $42,279,759 | |||
| 28 | $41,311,904 | |||
| 29 | $40,929,098 | |||
| 30 | $39,258,956 | |||
| 31 | $37,950,245 | |||
| 32 | $37,063,893 | |||
| 33 |
Weston Solutions Holdings Inc
Top agencies
|
$36,828,999 | ||
| 34 |
Fluor Corporation
Top agencies
|
$35,914,034 | ||
| 35 | $34,283,868 | |||
| 36 | $33,758,112 | |||
| 37 |
Kfs, LLC
Top agencies
|
$30,465,847 | ||
| 38 |
USA Environmental, Inc.
Top agencies
|
$28,420,008 | ||
| 39 | $27,648,987 | |||
| 40 | $25,991,966 | |||
| 41 |
Gsia-Parsons JV LLC
Top agencies
|
$25,463,633 | ||
| 42 |
Clean Harbors Inc.
|
$24,657,325 | ||
| 43 | $24,047,132 | |||
| 44 |
Jacobs Engineering Group Inc.
|
$23,190,941 | ||
| 45 |
Hgl-Aptim JV LLC
Top agencies
|
$22,801,730 | ||
| 46 |
The Aleut Corporation
Top agencies
|
$22,610,632 | ||
| 47 | $22,098,984 | |||
| 48 | $21,087,051 | |||
| 49 | $20,600,093 | |||
| 50 | $18,837,115 | |||
| 51 | $18,509,384 | |||
| 52 |
Ahtna-Arcadis 8(A) JV, LLC
Top agencies
|
$18,147,756 | ||
| 53 | $17,957,146 | |||
| 54 |
The Source Group, Inc.
Top agencies
|
$16,999,321 | ||
| 55 | $16,958,997 | |||
| 56 | $16,874,194 | |||
| 57 | $16,307,417 | |||
| 58 |
C M C, Inc.
Top agencies
|
$15,674,519 | ||
| 59 |
Catawba Teapec LLC
Top agencies
|
$15,589,977 | ||
| 60 | $14,878,718 | |||
| 61 | $14,695,308 | |||
| 62 | $14,347,119 | |||
| 63 | $13,508,314 | |||
| 64 |
Waste Management Collection and Recycling Inc
|
$13,358,839 | ||
| 65 | $13,212,648 | |||
| 66 |
Fidelis-Bbd, LLC
Top agencies
|
$12,956,387 | ||
| 67 | $12,883,383 | |||
| 68 | $12,592,845 | |||
| 69 | $12,456,245 | |||
| 70 |
LDS Kemron JV 4 LLC
Top agencies
|
$12,062,560 | ||
| 71 | $11,974,517 | |||
| 72 |
Harold Lemay Enterprises Incorporated
|
$11,963,291 | ||
| 73 | $11,929,510 | |||
| 74 |
Seaon Environmental LLC
Top agencies
|
$11,796,491 | ||
| 75 | $11,774,415 | |||
| 76 | $11,649,626 | |||
| 77 | $11,317,084 | |||
| 78 | $11,218,908 | |||
| 79 |
Montezuma Wetlands LLC
Top agencies
|
$11,177,050 | ||
| 80 | $11,005,805 | |||
| 81 |
Aes-Esfs JV II LLC
Top agencies
|
$10,961,047 | ||
| 82 | $10,949,277 | |||
| 83 | $10,714,986 | |||
| 84 | $10,606,769 | |||
| 85 | $10,520,382 | |||
| 86 |
S&K Mission Support, LLC
Top agencies
|
$10,377,427 | ||
| 87 |
Cape-Weston JV3 LLC
Top agencies
|
$10,234,959 | ||
| 88 |
Ahtna Global LLC
Top agencies
|
$9,969,175 | ||
| 89 | $9,843,325 | |||
| 90 |
Willow Environmental Inc.
Top agencies
|
$9,714,680 | ||
| 91 |
TRI-State Government Services Inc
Top agencies
|
$9,517,761 | ||
| 92 | $9,513,821 | |||
| 93 | $9,125,516 | |||
| 94 | $9,055,283 | |||
| 95 | $8,928,243 | |||
| 96 |
JFL-WCS Partners LLC
|
$8,790,270 | ||
| 97 |
Engineering/Remediation Resources Group Inc.
|
$8,761,063 | ||
| 98 | $8,714,241 | |||
| 99 | $8,659,524 | |||
| 100 | $8,649,337 |
Show 75 more
100 of 2,524 contractors listed here. See the rest on GovTribe.
Rankings for the codes under NAICS 562
| Code | Net obligations | Largest contractor |
|---|---|---|
| 5629 Remediation and Other Waste Management Services | $6,186,079,992 | Amentum Holdings, Inc. |
| 5622 Waste Treatment and Disposal | $1,523,736,581 | Hanford Tank Waste Operations & Closure, LLC |
| 5621 Waste Collection | $597,134,099 | JBW 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 $9.66 billion 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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 Aug 2024–Jul 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 NAICS 562 contractors in Aug 2025–Jul 2026?
1. Amentum Holdings, Inc. ($2.02B), 2. Savannah River Mission Completion, LLC ($914M), 3. Hanford Tank Waste Operations & Closure, LLC ($891M), 4. Southern Ohio Cleanup Company LLC ($144M), 5. Environmental Restoration LLC ($142M), 6. Arctic Slope Regional Corporation ($132M), 7. JBW Group LLC ($130M), 8. Guidehouse Inc. ($129M), 9. West Valley Cleanup Alliance, LLC ($122M), 10. Hydrogeologic, Inc. ($120M).
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