#1Oil Guys LLC
Serves this area from ND
Hazardous Waste Disposal Companies in Sioux County, ND
The top-ranked hazardous waste companies serving Sioux County, ND are Oil Guys LLC, Bnsf - Mandan and Schlosser Excavating Inc. We list 5 hazardous waste companies serving Sioux County, ND. 5 of the providers shown match an active record from U.S. EPA, checked on the date shown. Rankings follow our published methodology; sponsored placements never change rank.
Hazardous Waste Disposal Companies serving Sioux County, ND. 5 providers, 5 of the top 5 verified against federal or state records. Registry records checked on 2026-11-04.
Top 5 ranked hazardous waste companies for Sioux County
| # | Provider | Verified records | Based in | Phone |
|---|---|---|---|---|
| 1 | Oil Guys LLC | Registered hazardous waste transporter (EPA RCRAInfo)#NDD982597544 | ND | — |
| 2 | Bnsf - Mandan | Registered hazardous waste transporter (EPA RCRAInfo)#NDD048341788 | Mandan, ND (50 mi) | — |
| 3 | Schlosser Excavating Inc | Registered hazardous waste transporter (EPA RCRAInfo)#NDR000003764 | Mandan, ND (51 mi) | — |
| 4 | Marathon Mandan Refinery | Operating treatment/storage/disposal facility (EPA RCRAInfo)#NDD006175467 | Mandan, ND (51 mi) | — |
| 5 | Mavo Systems | Registered hazardous waste transporter (EPA RCRAInfo)#NDR000012161 | ND | — |
#2Bnsf - Mandan
Serves this area from Mandan, ND (50 mi)#3Schlosser Excavating Inc
Serves this area from Mandan, ND (51 mi)#4Marathon Mandan Refinery
Serves this area from Mandan, ND (51 mi)#5Mavo Systems
Serves this area from ND
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Frequently asked questions
How many hazardous waste companies serve Sioux County?
We list 5 hazardous waste companies serving Sioux County, ND: 0 based there and 5 serving it from nearby. 5 of the top 5 match an active federal or state record, checked on 2026-11-04.
Which hazardous waste companies serve Sioux County?
The top-ranked hazardous waste companies serving Sioux County, ND are Oil Guys LLC, Bnsf - Mandan, Schlosser Excavating Inc, Marathon Mandan Refinery and Mavo Systems. The full ranked list, with the official records each provider matched, is on this page.
Which hazardous waste companies serving Sioux County are verified against official records?
5 of the top 5 match an active official record: Oil Guys LLC (U.S. EPA), Bnsf - Mandan (U.S. EPA), Schlosser Excavating Inc (U.S. EPA), Marathon Mandan Refinery (U.S. EPA) and Mavo Systems (U.S. EPA). Each badge links to the official record it matched.
How are these companies ranked?
By our published methodology: verified registrations, documented capabilities, years registered and responsiveness. Sponsored placements are shown separately and never affect rank.
What does "Verified" mean on this page?
"Verified" means we matched the provider to an active official record on the date shown; each badge links to that record. The absence of a badge only means we have not verified that item.
What is the difference between a transporter and a TSDF?
A transporter moves hazardous waste under an EPA ID; a TSDF is a permitted facility that treats, stores or disposes of it. Many providers do both.
"Verified" means we matched the provider to an active official record on the date shown. The absence of a badge only means we have not verified that item. How we rank and verify. Page updated .
Communities served
Cannon Ball, Porcupine, Fort Yates, Selfridge, Solen