CE
Community Environmental Laboratories, Inc
1202 Technology Drive, Suite F, Aberdeen, MD
Water testing labs in Harford County, MD
4 state-accredited water testing labs in Harford County, MD.
4 certified labsUpdated October 2026Source: state lab accreditation records
Source: MDE list of certified drinking water laboratories, list dated Oct 1, 2026. Find a Water Test is independent and not affiliated with the Maryland Department of the Environment. Certification covers specific tests, so confirm the lab is certified for the ones you need: Verify a certification.
4 certified labs near Harford County, MD
HL
Home Land Labs - Forest Hill
2216 Commerce Road, Suite 2A, Forest Hill, MD
AW
Abingdon Water Treatment Plant Laboratory
3340 Abingdon Road, Abingdon, MD
Public water system lab. Many don't accept private well samples, so call first.
AA
Aberdeen Advanced Wastewater Treatment Plant Laboratory
361 Michael Lane, Aberdeen, MD
Public water system lab. Many don't accept private well samples, so call first.
Mail-in labs that ship to Harford County, MD
How mail-in testing worksNT
National Testing Laboratories (WaterCheck)
Ships nationwide
Single tests from $75; well and city packages $165 to $440
Certified in Maryland
TS
Tap Score by SimpleLab
Ships nationwide
Single-contaminant kits from about $145; full well and city panels about $300 to $870
Testing service: sends your sample to a partner lab.
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Well water guides
Common questions
Where can I test well water near Harford County, MD?
The state-accredited labs above serve Harford County, MD. Many offer sample bottles you collect at home.
What should I test for near Harford County, MD?
Start with total coliform bacteria and nitrates, then ask your county health department about local concerns.