Get your water tested in Massachusetts.
The labs Massachusetts certifies to test drinking water, from the state’s own list. A lab test is the only way to know what is in your own tap or well.
The short answer
Massachusetts’s list has 81 labs certified to test drinking water: 44 in Massachusetts and 37 in other states. 22 of the labs here are named for a water utility and may test only its own water, so they come last. The list says 21 take samples from homeowners.
Certification is test by test, so check that a lab is certified for what you want tested, and call first: it will say which bottles to use and how soon the sample has to arrive.
Labs in Massachusetts
23 labs, by city.
| Lab | City | Phone | Certified for | Takes homeowners’ samples |
|---|---|---|---|---|
| Vallid Labs Inc. | Agawam | (413) 789-2206 | Bacteria | Yes |
| Wampanoag Environmental Laboratory | Aquinnah | (508) 645-2903 | Bacteria | Yes |
| Eurofins Ayer | Ayer | (978) 391-4428 | Bacteria, nitrate, minerals and other inorganics | Yes |
| Barnstable County Health & Env Dept | Barnstable | (508) 375-6605 | Bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS | Yes |
| Quabbin Analytical Laboratory | Belchertown | (413) 323-7134 | Bacteria | Yes |
| Matrix Sciences International Inc. | Canton | (781) 401-9999 | Bacteria | No |
| Eurofins Danvers | Danvers | (978) 777-4442 | Bacteria | Yes |
| Pace Analytical LLC-East Longmeadow | East Longmeadow | (413) 525-2332 | Bacteria, nitrate, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS | No |
| Biomarine Inc. | Gloucester | (978) 281-0222 | Bacteria | Yes |
| Mass DPH Environmental Chemistry Lab | Jamaica Plain | (617) 983-6654 | Lead and copper, metals | Yes |
| Microbac Laboratories Inc. | Lee | (413) 776-5025 | Bacteria | No |
| Pace Analytical LLC-Mansfield-320 Forbes | Mansfield | (508) 822-9300 | Lead and copper, metals, PFAS | No |
| Eurofins Providence (AB) | Middleborough | (508) 946-2225 | Bacteria, nitrate, lead and copper, metals, minerals and other inorganics | Yes |
| Proverde Environmental, Inc. | Milford | (617) 221-3356 | PFAS | Yes |
| New Bedford Health Department Lab | New Bedford | (508) 991-6199 | Bacteria | Yes |
| Battelle Memorial Institute | Norwell | (781) 681-6635 | PFAS | No |
| G and L Labs Inc. | Quincy | (617) 328-3663 | Bacteria | No |
| New England Chromachem Inc. | Salem | (978) 744-6600 | Organic chemicals, disinfection byproducts, PFAS | Yes |
| Envirotech Laboratories Inc. | Sandwich | (508) 888-6460 | Bacteria, nitrate, minerals and other inorganics | No |
| Howard Laboratories LLC | South Deerfield | (413) 247-5533 | Bacteria | No |
| Pace Analytical LLC-Westborough | Westborough | (508) 898-9220 | Bacteria, nitrate, minerals and other inorganics | No |
| White Lodge Laboratory | Westwood | (781) 710-6498 | Bacteria | No |
| Eurofins-Worcester | Worcester | (401) 461-7181 | Bacteria | No |
Labs in other states
36 labs Massachusetts certifies outside the state, by state and city. Ask whether a lab takes samples by mail, and how fast they have to arrive.
| Lab | City | Phone | Certified for | Takes homeowners’ samples |
|---|---|---|---|---|
| Eurofins Pomona | Pomona, CA | (626) 386-1100 | Nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS | No |
| Eurofins Sacramento | West Sacramento, CA | (916) 373-5600 | PFAS | No |
| Microbac Laboratories Inc. | Dayville, CT | (800) 334-0103 | Bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts | Yes |
| Phoenix Environmental Laboratories Inc. | Manchester, CT | (860) 645-1102 | Bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts | No |
| Complete Environmental Testing Inc. | Stratford, CT | (203) 377-9984 | Lead and copper, metals, organic chemicals | No |
| Aquatek Labs | Woodbridge, CT | (203) 393-2125 | Bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals | No |
| SGS - Orlando | Orlando, FL | (407) 425-6700 | PFAS | No |
| Pace Analytical Services LLC Ormond | Ormond Beach, FL | (386) 672-5668 | PFAS | No |
| KNL Environmental Testing | Tampa, FL | (813) 229-2879 | Radioactivity | Yes |
| Eurofins South Bend | South Bend, IN | (574) 233-4777 | Bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS, radioactivity | No |
| Eurofins Auburn | Auburn, ME | (207) 784-5354 | Bacteria | No |
| Katahdin Analytical Services LLC | Scarborough, ME | (207) 874-2400 | Lead and copper, metals | No |
| Analytichem USA, Inc. | Winslow, ME | (207) 873-7711 | Bacteria | No |
| National Testing Laboratories Ltd | Ypsilanti, MI | (734) 483-8333 | Bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts | Yes |
| Eurofins St. Louis | Earth City, MO | (314) 298-8566 | Radioactivity | No |
| Eurofins Built Environment Testing, Cary | Cary, NC | (919) 481-1413 | Asbestos | No |
| Onterris Laboratories, LLC | Wilmington, NC | (910) 212-5858 | PFAS | No |
| SGS North America Inc. | Wilmington, NC | (910) 350-1903 | PFAS | No |
| Eurofins Concord | Concord, NH | (603) 228-0525 | Bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts | No |
| Eurofins Derry | Derry, NH | (603) 432-3044 | Bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS | Yes |
| Nelson Analytical LLC | Manchester, NH | (603) 622-0200 | Bacteria, nitrate, lead and copper, metals, minerals and other inorganics | No |
| Nelson Analytical Lab-Keene | North Swanzey, NH | (603) 357-2577 | Bacteria | Yes |
| EMSL Analytical Inc. | Cinnaminson, NJ | (800) 220-3675 | Bacteria, lead and copper, metals, minerals and other inorganics, organic chemicals, PFAS, radioactivity, asbestos | No |
| SGS North America Inc.-Dayton | Dayton, NJ | (732) 329-0200 | Lead and copper, organic chemicals | No |
| ALS Environmental-Toms River | Toms River, NJ | (203) 325-1371 | PFAS | No |
| Pace Analytical Services LLC-Melville | Melville, NY | (516) 370-6000 | Bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts | Yes |
| Capital Region Environmental Laboratory | Rensselaer, NY | (518) 949-2020 | Bacteria | No |
| Microbac Laboratories, Inc-Marietta Div | Marietta, OH | (740) 373-4071 | PFAS | No |
| Pace Analytical Services LLC-Greensburg | Greensburg, PA | (724) 850-5600 | Radioactivity | No |
| Niagara Bottling, LLC | Howard, PA | (814) 357-6084 | Bacteria | No |
| Eurofins Lancaster Laboratories | Lancaster, PA | (717) 656-2300 | Nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS | No |
| Eurofins Rhode Island | North Kingstown, RI | (413) 789-9018 | Nitrate, lead and copper, metals, minerals and other inorganics | No |
| RI Analytical Laboratories Inc. | Warwick, RI | (401) 737-8500 | Bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS | Yes |
| New England Testing Laboratory Inc. | West Warwick, RI | (401) 353-3420 | Bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS | Yes |
| GEL Laboratories LLC | Charleston, SC | (843) 556-8171 | PFAS, radioactivity | Yes |
| Pace National | Mount Juliet, TN | (615) 758-5858 | Nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts | No |
Labs run by water utilities
22 labs named for a water utility or its plant. A utility’s lab may test only its own system’s water, so call before taking a sample there.
| Lab | City | Phone | Certified for | Takes homeowners’ samples |
|---|---|---|---|---|
| So Central Connecticut Regional Water | New Haven, CT | (203) 401-2700 | PFAS | No |
| Amesbury WTP Lab | Amesbury | (978) 388-0853 | Bacteria | No |
| Andover Water Treatment Plant Lab | Andover | (978) 623-8873 | Bacteria, lead and copper | No |
| MWRA Quabbin Laboratory | Belchertown | (617) 660-7803 | Bacteria | No |
| Salem-Beverly Water Supply Board | Beverly | (978) 922-2600 | Bacteria | No |
| Cambridge Water Department Laboratory | Cambridge | (617) 349-4780 | Bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts | No |
| MWRA Chelsea Laboratory | Chelsea | (617) 660-7803 | Bacteria | No |
| Chicopee Water Department Laboratory | Chicopee | (413) 594-1870 | Bacteria | No |
| Quittacas WTP Lab | Freetown | (508) 763-2231 | Bacteria | No |
| Greenfield Water Pollution Control | Greenfield | (413) 772-1539 | Bacteria | No |
| Haverhill Water Dept Lab | Haverhill | (978) 374-2385 | Bacteria | No |
| Worcester Water Filtration Plant Lab | Holden | (508) 799-1516 | Bacteria, lead and copper, metals, minerals and other inorganics | No |
| Holyoke Water Works Laboratory | Holyoke | (413) 532-6778 | Bacteria | No |
| Lynn Water Treatment Plant Laboratory | Lynn | (781) 595-5200 | Bacteria | No |
| Methuen Water Treatment Plant | Methuen | (978) 983-8845 | Bacteria | No |
| Danvers Water Division Laboratory | Middleton | (978) 774-5054 | Bacteria | No |
| Newburyport WTP Lab | Newburyport | (978) 465-4466 | Bacteria | No |
| North Andover WTP Lab | North Andover | (978) 688-9574 | Bacteria | No |
| MWRA Southboro Laboratory | Southborough | (617) 660-7803 | Bacteria | No |
| Tewksbury Water Treatment Plant | Tewksbury | (978) 858-0345 | Bacteria | No |
| Springfield Water and Sewer Commission | Westfield | (413) 310-3515 | Bacteria | No |
| MWRA Central Laboratory | Winthrop | (617) 660-7803 | Bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS | No |
What to ask a lab to test
- On a private well: no one else tests it. What to test a well for, and how often.
- On city water: your utility tests what leaves the plant, not what your own pipes add. Testing your tap for lead.
- What it costs: fees vary by lab and by test, and some states test wells for free. What a water test costs.
- Anything your utility’s report flags: a lab certified for that contaminant can test your own tap. Massachusetts utilities’ reports.
Source: MassDEP Online Searchable Laboratory Certification Listing, potable water, read Oct. 16, 2026. Labs are listed as the state lists them; what each is certified for is as far as the list says. Certifications change, so a lab’s own word is the latest.
A lab named for a water utility is listed apart. Distances on town pages are straight lines between ZIP code centers from the Census 2020 gazetteer. How labs are listed here.
Where to go next
- Testing a private wellWhat to test for every year, what else depends on where you live, and reading the results.How to test well water
- Massachusetts utilitiesEvery utility with a full report: what its results show, and its violations.Massachusetts tap water
- Labs in other statesEvery state TapBuff has read, and where to find the rest.Certified labs by state