#1American Tank Transport Inc
Based in Elkridge, MD
Hazardous Waste Disposal Companies in Howard County, MD
The top-ranked hazardous waste companies serving Howard County, MD are American Tank Transport Inc, Chesapeake Electrical Systems Inc and Diversified Refuse Service Inc. We list 169 hazardous waste companies serving Howard 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 Howard County, MD. 169 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 Howard County
#2Chesapeake Electrical Systems Inc
Based in North Laurel, MD#3Diversified Refuse Service Inc
Based in North Laurel, MD#4Ecology Services, Inc
Based in Columbia, MD#5E O I Inc
Based in Jessup, MD#6Howco Transfer Company
Based in Ellicott City, MD#7Marcor Environmental Inc
Based in Elkridge, MD#8Products Support Inc
Based in Columbia, MD#9Professional Graphics Printing Company
Based in North Laurel, MD#10Tli Freight Services LLC
Based in Fulton, MD
20 more providers serving this area
- Will, Harry M Jr Inc, Columbia, MD
- Town Cleaners Of Olney, Olney, MD (10 mi)
- Wright Construction & Septic Service, Eldersburg, MD (10 mi)
- Wright Waste Removal Co Inc, Eldersburg, MD (10 mi)
- Reynolds Hauling Co, Catonsville, MD (10 mi)
- Liberty Dam # 41 City Of Baltimore, Eldersburg, MD (11 mi)
- Discount One Hour Photo, Cloverly, MD (11 mi)
- Marcor Inc, Woodlawn, MD (11 mi)
- King`s Trucking Inc, Maryland City, MD (11 mi)
- Rso Inc DBA Radiation Service Organization, Konterra, MD (11 mi)
- United Enviromental Services Inc, Randallstown, MD (11 mi)
- Clean Harbors Laurel, LLC, Maryland City, MD (12 mi)
- Fisca, Colesville, MD (13 mi)
- Maryland City Wastewater, Maryland City, MD (13 mi)
- Willard, Lantz Company Inc, Konterra, MD (13 mi)
- Ebi Services Inc, Arbutus, MD (13 mi)
- Fleetpro, Inc, Arbutus, MD (13 mi)
- The Simon X Ray Company, Arbutus, MD (13 mi)
- Waste Tron Of Maryland Inc, Arbutus, MD (13 mi)
- Mcdonald, A J Co, Arbutus, MD (14 mi)
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Frequently asked questions
How many hazardous waste companies serve Howard County?
We list 169 hazardous waste companies serving Howard County, MD: 11 based there and 158 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 Howard County?
The top-ranked hazardous waste companies serving Howard County, MD are American Tank Transport Inc, Chesapeake Electrical Systems Inc, Diversified Refuse Service Inc, Ecology Services, Inc and E O I Inc. The full ranked list, with the official records each provider matched, is on this page.
Which hazardous waste companies serving Howard County are verified against official records?
10 of the top 10 match an active official record: American Tank Transport Inc (U.S. EPA), Chesapeake Electrical Systems Inc (U.S. EPA), Diversified Refuse Service Inc (U.S. EPA), Ecology Services, Inc (U.S. EPA) and E O I Inc (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 Howard County
Communities served
Scaggsville, Savage, Fulton, Highland, Lisbon