#1A2z Environmental Group LLC
Based in Joppatowne, MD
Hazardous Waste Disposal Companies in Harford County, MD
The top-ranked hazardous waste companies serving Harford County, MD are A2z Environmental Group LLC, Almony, L G Sons Inc and American Pollution Services Inc. We list 126 hazardous waste companies serving Harford County, MD. 30 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 Harford County, MD. 126 providers, 10 of the top 10 verified against federal or state records. Registry records checked on 2026-11-04.
Top 10 ranked hazardous waste companies for Harford County
#2Almony, L G Sons Inc
Based in MD#3American Pollution Services Inc
Based in Pleasant Hills, MD#4Harford Sanitation Services
Based in Bel Air, MD· Website#5Heritage-crystal Clean
Based in Bel Air North, MD#6Leak Repairs Inc
Based in Bel Air North, MD#7Manley Regan Chem Divunited Chem
Based in Joppatowne, MD#8Nova Research Labs
Based in MD#9Over, Cw & Sons Inc
Based in MD#10Professional Disposal Services
Based in Bel Air South, MD
20 more providers serving this area
- Standard Equipment Inc, Bel Air North, MD
- Usarmy - Edgewood Chemical Biological Ctr, Edgewood, MD
- U.S. Army Garrison, Aberdeen Proving Ground, MD
- US Army Technical Escort Unit, Edgewood, MD
- Land Reclamation Inc, Honeygo, MD (11 mi)
- Lightning Oil Service, MD
- Hazardous Waste Transportation Inc, Honeygo, MD (12 mi)
- Neff David Construction C, Perryville, MD (12 mi)
- Supply Service Center Warehouse 2, Perryville, MD (13 mi)
- Wolfes Trucking Inc, Middle River, MD (14 mi)
- Stone Transport Inc, Rossville, MD (15 mi)
- Cochran, C E Co Inc, Middle River, MD (15 mi)
- S & G Waste Oil Service Inc, Carney, MD (15 mi)
- Bnc Services Inc, Rossville, MD (16 mi)
- F & S Transport Inc, Cockeysville, MD (17 mi)
- Langenfelder, C J & Son Inc, Rosedale, MD (18 mi)
- Serian LLC DBA Bio-one Of Towson, Towson, MD (18 mi)
- Bestrans Inc, MD
- Air Engineering Corp, Towson, MD (18 mi)
- Mobile Industrial Services, Essex, MD (18 mi)
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Frequently asked questions
How many hazardous waste companies serve Harford County?
We list 126 hazardous waste companies serving Harford County, MD: 14 based there and 112 serving it from nearby. 10 of the top 10 match an active federal or state record, checked on 2026-11-04.
Which hazardous waste companies serve Harford County?
The top-ranked hazardous waste companies serving Harford County, MD are A2z Environmental Group LLC, Almony, L G Sons Inc, American Pollution Services Inc, Harford Sanitation Services and Heritage-crystal Clean. The full ranked list, with the official records each provider matched, is on this page.
Which hazardous waste companies serving Harford County are verified against official records?
10 of the top 10 match an active official record: A2z Environmental Group LLC (U.S. EPA), Almony, L G Sons Inc (U.S. EPA), American Pollution Services Inc (U.S. EPA), Harford Sanitation Services (U.S. EPA) and Heritage-crystal Clean (U.S. EPA), and 5 more on this page. 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 .
Cities in Harford County
Communities served
Aberdeen, Havre de Grace, Joppatowne, Bel Air, Fallston, Riverside, Abingdon, Pleasant Hills, Jarrettsville, Perryman, Pylesville, Darlington