Barnstable County Water Quality Laboratory

At a glance

What it is certified to test

3 of the 9 common well tests on the MA list (see which)

Price

not published on the state list: ask the lab for a quote

Turnaround

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

Homeowner samples

yes (Massachusetts list)

Lab facts

Listed by

Massachusetts (Massachusetts Department of Environmental Protection (MassDEP) - Drinking Water Laboratory Certification)

Address

3195 Main Street, Barnstable, MA 02630 · Open in Google Maps

Phone

(508) 375-6605

Public / homeowner samples

Public samples: yes (per state)

MassDEP list 'Offers services to residential customers?': Yes

Left blank on the list

The Massachusetts list (version Created and published on 12/18/2025) gives no website for this lab.

Certification record

Certificate ID

M-MA009

Issued by

Massachusetts Department of Environmental Protection (MassDEP) - Drinking Water Laboratory Certification (certification program)

List version

MassDEP Certified Laboratories Offering Analytical Services for Private Well Owners and Residential Customers, version Created and published on 12/18/2025

We fetched it

15 Nov 2026 (file SHA-256 f56b9b720b22…) · open the state file

Tests on the state list

• 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*').

Residential package for several contaminants: Yes. Getting the sample to the lab: In-Person Drop Off, Courier Services. Availability: Normal Business Hours. Preferred contact: phone or email. MassDEP lists analyses by category only; ask the lab which analytes it is certified for.

Nearest labs that take homeowner samples

No other lab that takes homeowner samples is within 25 miles of this lab; the nearest is 32 miles away. 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: Barnstable County, MA

• Private wells: about 12,247 people, 6% of Barnstable County’s 214,333 residents (USGS, 2015); rank 11 of 14 counties in Massachusetts by people on wells.
• At house sale: Statewide (Title 5) has a septic system rule (310 CMR 15.301-15.305 (Title 5)). 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 1,247 private-well users (95% range 826 to 1,926; 2010 base), rank 7 of 12 in the state. A screening estimate, not a measurement of any well.
• Older homes (Census ACS 2020–2024): 56% of 166,215 housing units were built before 1980, below the state share of 67%. 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): 20 public systems serving this county reported EPA UCMR 5 results; 3 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 Massachusetts 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).