CALIBER ANALYTICAL SERVICES (METALS and VOCs ONLY)
- 8851 Orchard Tree Lane, Towson, MD 21286
- Phone: 410-825-2126
- Fax: 410-825-2126
CASWELL TESTING
- 1111 Oakland Road, Freeland, MD 21053
- Phone: 410-557-9355
- Fax: 410-357-5483
- Email: Caswelltesting@verizon.net
COMMUNITY ENVIRONMENTAL LAB
- 1202 Technology Drive, Suite F, Aberdeen, MD 21001
- Phone: 410-273-7600
- Fax: 410-273-1907
AQUA LABS
- 21429 York Road, Freeland, MD 21053
- Phone: 410-472-1112
FOUNTAIN VALLEY ANALYTICAL LABORATORY, INC.
- 1413 Old Taneytown Road, Westminster, MD 21158
- Phone: 410-848-1014, 410-876-4554
- Fax: 410-848-0298
HOME LAND LABS
- 2216 Commerce Road, Unit 2A, Forest Hill, MD 21050
- Phone: 443-505-8375
- Email: Lab@homelandhealthyhomes.com
MICROBAC LABORATORIES, INC
- 2101 Van Deman Street, Baltimore, MD 21224
- Phone: 410-633-1800
- Fax: 410-577-2584
WATER TESTING LAB OF MARYLAND
- 1000 Butterworth Court, Stevensville, MD 21666
- Phone: 410-643-7711
- Email: Sales@wtlmd.com
Water samples analyzed at a State Certified Laboratory may be submitted to the Harford County Health Department at DLHCHDEWQ_MDH@maryland.gov.
NOTE: This list does not include certified samplers who submit to a Certified Lab.


