Nelson Analytical Lab, Keene Division

At a glance

What it is certified to test

1 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

103 Monadnock Highway, North Swanzey, NH 03431 · Open in Google Maps

Phone

(603) 357-2577

Public / homeowner samples

Public samples: yes (per state)

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

Location note

Lab is in NH, certified by Massachusetts (often used as a mail-in lab).

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-NH1013

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, Overnight Mail. Availability: Normal Business Hours. Preferred contact: phone or email. MassDEP lists analyses by category only; ask the lab which analytes it is certified for.

Also certified by other states

Same business (same street address and ZIP) on another state's official list. Each state certifies separately, so each listing keeps its own source.

• Vermont · VT 100704 · Coliform / E. coli · Public samples: yes (per state)
  Vermont Department of Health - Laboratories Certified for Drinking Water Analysis (September 28, 2026)

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).