WATER TESTING LABS OF MD - ANNAPOLIS

At a glance

Price

from $55 (Total Arsenic in drinking water), as printed on the lab’s website, read 14 Nov 2026

Turnaround

not stated on the state list or the lab’s website: ask when you order

Homeowner samples

yes (lab’s own website, read 14 Nov 2026)

Lab facts

Listed by

Maryland (Maryland Department of the Environment (MDE) - Water Supply Program, Laboratory Certification Program)

Address

1993 Moreland Parkway, Suite 201, Annapolis, MD 21401 · Open in Google Maps

County

Anne Arundel

Phone

(410) 643-7711

Website

wtlmd.com

Not on the state list: found and checked by us, 14 Nov 2026

Public / homeowner samples

Homeowner samples: yes (lab’s website)

Not stated per lab. MDE's Be Well Wise page for private well owners says: "Have your water tested periodically by a state-certified laboratory that conducts a drinking water test." It names no lab, and MDE's list does not say which labs take samples from homeowners.

Certification record

Certificate ID

134

Issued by

Maryland Department of the Environment (MDE) - Water Supply Program, Laboratory Certification Program (certification program)

List version

Maryland's Certified Drinking Water Laboratories (MDE Laboratory Certification Program), version Latest Revisions: 10/1/2026

We fetched it

7 Nov 2026 (file SHA-256 9d19de9053bf…) · open the state file

Tests on the state list

This list does not break certification down by analyte. Ask the lab which tests it is certified for; the groups as written on the list are below.

• Named on the official list The state list names this analyte (or a column for it) for this lab.
• Group-level certification Certified for a parent group (e.g. 'Inorganics') that includes this analyte. Confirm the specific test with the lab.
• Partial group certification The list marks the group as 'Partial'. Confirm this analyte with the lab.
• Subcontracted The lab sends this analyte to another accredited lab (MDH 'X*').

MDE prints the approved tests as "Micro 4" (codes keyed to MDE's List of Approved Contaminants, Revised 10/10/2024). MDE prints no expiry date. MDE's key describes Microbiology Group 4 only as "Enzyme Substrate Determinations" and does not name coliform bacteria or E. coli, so no bacteria certification is shown. Ask the lab.

Homeowner service and turnaround (lab’s own website)

• Takes homeowner samples: yes. The lab’s site says: “Water Testing Labs of Maryland specializes in testing well water for real estate transfers.” source
• Who collects: You collect it, or lab staff can. Sampling fee as printed: Site Visit $100.00 (only if sample cannot be taken); real-estate prices include collection. source

From the lab’s own website, read 14 Nov 2026 and re-read by a second checker; next check due by 12 Feb 2027. Certification fields come from the state list only.

Prices the lab prints, compared

Nearest labs that take homeowner samples

2 other certified labs that take homeowner samples are within 25 miles of this lab. Distances are straight-line from the address on the state list (approx. = ZIP-code centre). “Takes homeowner samples” comes from a state list column or the lab’s own website, as named.

Price and turnaround as printed on each lab’s own website and checked by a second reader; – = not published or not read yet.

Around this lab: Anne Arundel County, MD

• Private wells: about 166,914 people, 30% of Anne Arundel County’s 564,195 residents (USGS, 2015); rank 2 of 24 counties in Maryland by people on wells.
• At house sale: Statewide (Real Property Article) has a well_test rule (Md. Code, Real Property § 10-713 (Ch. 587 of 2023, HB 11, Private Well Safety Act of 2023)). What it requires

• EPA radon zone (indoor air): Zone 2: moderate potential (average indoor radon may be between 2 and 4 pCi/L). EPA says the zone map should not decide whether one home needs testing.
• Arsenic above 10 µg/L (USGS model): about 2,558 private-well users (95% range 1,935 to 3,424; 2010 base), rank 5 of 24 in the state. A screening estimate, not a measurement of any well.
• Older homes (Census ACS 2020–2024): 45% of 236,262 housing units were built before 1980, below the state share of 51%. Homes built before 1986 are more likely to have lead solder or fittings, so test tap water for lead there.
• PFAS in public water nearby (public supply, not your well): 11 public systems serving this county reported EPA UCMR 5 results; 0 had a PFOA or PFOS sample at or above 4.0 ng/L.

County figures describe where the lab is, not the lab. Sources: USGS 2015 water use and 2017 arsenic estimates, EPA radon zones, Census ACS table B25034 (2020–2024), EPA UCMR 5 (2023–2026); details and links on the sources page.

Before you send a sample

Call the lab to confirm it's currently certified for the exact test and method, that it accepts samples from homeowners, and how to collect and ship them. Bacteria samples have short holding times. Status can change between list updates. To check a status, contact the Maryland certification program.

Is this your lab?

Labs can ask for corrections through the agency that publishes their state list. Homeowner service, prices and turnaround above come only from the lab’s own website. To ask us to correct or remove this listing, write to us (how we handle listings).