New Hampshire labs
Two paths are independently verified for private well owners through the New Hampshire Department of Health and Human Services (NHDHHS) Public Health Laboratories Water Analysis Laboratory (WAL): (1) Homeowner Water Testing — comprehensive fee-for-service testing for analytes in private wells, with a full report and interpretation (WAL Program; contact 603-271-3445 / Waterlab@dhhs.nh.gov; 29 Hazen Drive, Concord, NH); (2) Home Owner Container Request via the NHDES DES Onestop HOBottles form (options include Standard Analysis, Drinking Water Bacteria, NH Well Water Test For Home Buyers, Standard Analysis Plus Radon, Radon Only, Arsenic Only, and others). The table below lists 9 laboratories from NHDES’s official labs-private-wells.pdf (“Water Testing Guidance for New Hampshire Private Well Users”; document header April 2026; PDF metadata ModDate 20 April 2026; lab-list footer updated 9/20/2024; retrieved 20 September 2026) that NHDES states serve New Hampshire private well users. NHDHHS Public Health Laboratories also appears on that PDF and is covered in the verified section above (not duplicated in the commercial table). Call before you collect water.
What we could and could not verify
- NHDES labs-private-wells.pdf retrieved successfully on 20 September 2026. Document header April 2026; PDF metadata ModDate 20 April 2026; footer states Lab list updated 9/20/2024. For live accreditation status use Accredited Laboratory Search.
- Verified private-well paths: 2 — NHDHHS WAL Homeowner Water Testing, and NHDES Home Owner Container Request (HOBottles) for WAL kits/bottles.
- Laboratories tabulated from the private-well guidance PDF (excluding NHDHHS): 9. NHDES states these labs serve New Hampshire private well users; still call to confirm current packages, hold times, and fees.
- NHDHHS Public Health Laboratories listed on the PDF is documented under verified paths — not duplicated in the commercial table.
- Fees intentionally omitted. Confirm current fees with WAL / each lab.
- Accredited Laboratory Search is a live database; page HTML archived, but the live result set was not scraped into a table tonight. Additional accredited labs may exist beyond the private-well guidance PDF.
- WAL program page note retrieved tonight: WAL will not accept bacteria samples on Friday, September 25 — plan accordingly.
Verified for private well owners
NHDHHS WAL — Homeowner Water Testing
Water Analysis Laboratory Program · WAL contact · What’s in your Water
The WAL Program states it provides comprehensive testing for analytes in private wells of New Hampshire homeowners on a fee-for-service basis. Upon completion, homeowners receive a full report with an interpretation of results; staff can provide an unbiased assessment and further information on references and treatment options. WAL offers microbiology (total coliform and E. coli), inorganic chemistry, organic chemistry, and radiochemistry (primarily uranium and radon).
Contacts (as printed on the WAL contact page): 29 Hazen Drive, Concord NH 03301 · Waterlab@dhhs.nh.gov · 603-271-3445.
Fees: Confirm current amounts with WAL — this directory does not republish a fee table.
Schedule note (as printed on the WAL program page, retrieved 20 September 2026): WAL will not be accepting bacteria samples on Friday, September 25. Please plan accordingly.
NHDES Home Owner Container Request (kits / bottles)
Request homeowner test containers through DES Onestop. Form options verified on the page include: Standard Analysis; Radiological Analysis; Volatile Organic Chemicals; Drinking Water Bacteria; Basic Analysis; Swimming Water Bacteria; Suspected Sewage Surface Water; Fluoride; NH Well Water Test For Home Buyers; Standard Analysis Plus Radon; Radon Only; Arsenic Only; Lead Only (for service line ID); and Other. Confirm which kit matches NHDES’s recommended private-well panel, how to submit, hold times, and current fees before you collect a sample.
Laboratories on the NHDES private-well guidance PDF
NHDES lists these laboratories as accredited by NHELAP and serving New Hampshire private well users. Call to confirm they still hold accreditation for the tests you need, that they will take your sample, drop-off/mail instructions, and current fees. NHDHHS Public Health Laboratories is covered above and omitted from this table.
| Laboratory | City | Address | Phone | Website (as printed) | Drop-off locations (as printed) | Accepts private wells? | Mail / drop-off |
|---|---|---|---|---|---|---|---|
| Endyne Inc. | Lebanon | 56 Etna Rd, Suite F, Lebanon, NH | (603) 678-4891 | endynelabs.com | Lebanon, NH; Brattleboro, VT; St. Johnsbury, VT | Yes — listed on NHDES private-well guidance (call to confirm packages) | Lebanon, NH; Brattleboro, VT; St. Johnsbury, VT (as printed) |
| Eurofins Environmental Testing Eastern Analytical | Concord | 51 Antrim Avenue, Concord, NH | (603) 228-0525 | easternanalytical.com | Concord | Yes — listed on NHDES private-well guidance (call to confirm packages) | Concord (as printed) |
| Eurofins Portsmouth | Portsmouth | 124 Heritage Ave., Portsmouth, NH | (603) 436-2001 | eurofins.com | Portsmouth | Yes — listed on NHDES private-well guidance (call to confirm packages) | Portsmouth (as printed) |
| Granite State Analytical | Derry | 22 Manchester Road, Derry, NH | (603) 432-3044 | granitestateanalytical.com | 10 NH locations including North Conway, Amherst, Tilton, Hampstead | Yes — listed on NHDES private-well guidance (call to confirm packages) | 10 NH locations including North Conway, Amherst, Tilton, Hampstead (as printed) |
| Nelson Analytical LLC | Manchester | 490 E. Industrial Park Dr., Manchester, NH | (603) 622-0200 | nelsonanalytical.com | Manchester; Canterbury | Yes — listed on NHDES private-well guidance (call to confirm packages) | Manchester; Canterbury (as printed) |
| Nelson Analytical Maine | Kennebunk | 120 York Street, Kennebunk, ME | (207) 467-3478 | nelsonanalytical.com | Kennebunk, ME | Yes — listed on NHDES private-well guidance (call to confirm packages) | Kennebunk, ME (as printed) |
| Nelson Analytical Keene | North Swanzey | 103 Monadnock Highway, North Swanzey, NH | (603) 357-2577 | nelsonanalytical.com | Swanzey | Yes — listed on NHDES private-well guidance (call to confirm packages) | Swanzey (as printed) |
| New England Radon Ltd. | Salem | 11A Industrial Way, Unit 3, Salem, NH | (603) 893-4260 | newenglandradon.com | Salem | Yes — listed on NHDES private-well guidance (call to confirm packages) | Salem (as printed) |
| Seacoast Analytical Services LLC | Lee | 72 Pinkham Road, Lee, NH | (603) 868-1457 | seacoastanalytical.com | Lee; Epping | Yes — listed on NHDES private-well guidance (call to confirm packages) | Lee; Epping (as printed) |
Official tools if you need more labs
- NHDES labs-private-wells.pdf — Water Testing Guidance for New Hampshire Private Well Users (April 2026; lab list updated 9/20/2024).
- Accredited Laboratory Search — live NHELAP database (preferred for up-to-date accreditation).
- NHELAP program hub.
- NHDES Private Wells · Be Well Informed result interpreter.
- NHDHHS WAL Program · Home Owner Container Request.
- NHELAP contact (as printed on the PDF footer): 29 Hazen Drive, PO Box 95, Concord, NH 03302-0095; 603-271-2998 / 603-271-5314; nhelap@des.nh.gov.