At a glance
- What it is certified to test
- 4 of the 9 common well tests on the TN 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 (Connecticut list)
Lab facts
- Listed by
- Tennessee (Tennessee Department of Environment and Conservation (TDEC), Division of Water Resources - Laboratory Certification Program)
- Address
- 61 Louisa Viens Drive, Dayville, CT 06241 · Open in Google Maps
- Phone
- (800) 334-0103
- Public / homeowner samples
- Public samples: ask the labNot stated in the list.
- Location note
- Lab is in CT, certified by Tennessee (often used as a mail-in lab).
- Left blank on the list
- The Tennessee list (version 10/2/2026 (page footers 10/06/2026)) gives no website for this lab.
Certification record
- Certificate ID
- 04903
- Issued by
- Tennessee Department of Environment and Conservation (TDEC), Division of Water Resources - Laboratory Certification Program (certification program)
- Expiry on the list
- 1/15/2027 · expires in 61 days
- List version
- TDEC Division of Water Resources - Commercial Laboratories Certified for Drinking Water Analysis, version 10/2/2026 (page footers 10/06/2026)
- We fetched it
- 15 Nov 2026 (file SHA-256 0f6771f57d5a…) · open the state file
Tests on the state list
| Contaminant | On this state list | Same lab, other state lists |
|---|---|---|
| Coliform / E. coli | Not named on this list | Connecticut, Massachusetts, Rhode Island |
| Nitrate | Group-level certification | Connecticut, Maryland, North Carolina |
| Arsenic | Group-level certification | Connecticut, Maryland, North Carolina, Pennsylvania, Virginia |
| Lead | Group-level certification | Connecticut, Maryland, Massachusetts, North Carolina, Pennsylvania, Virginia |
| PFAS | Not named on this list | Massachusetts |
| Uranium | Not named on this list | Connecticut, Maryland, Massachusetts, Pennsylvania, Virginia |
| Radon (water) | Not named on this list | |
| Manganese | Not named on this list | North Carolina, Pennsylvania, Virginia |
| VOCs | Group-level certification | Connecticut, Maryland, North Carolina, Pennsylvania, Virginia |
| Other metals | Group-level certification | Connecticut, Maryland, North Carolina, Pennsylvania, Virginia |
Groups as written on the state list (5)
- Disinfection Byproducts
- General Chemistry-Turbidity, Corrosivity, pH
- Inorganics/Trace Metals
- Organics
- Polychlorinated Biphenyls (PCB)
- 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*').
TDEC lists certified contaminant groups, not individual analytes; the list notes that a laboratory may not be approved for all parameters within a group, so confirm the specific test with the lab.
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.
- Connecticut · PH-0465 · Coliform / E. coli, Nitrate, Arsenic, Lead, Uranium, VOCs, Other metals · Public samples: yes (per state)CT DPH In-State Approved Commercial Laboratories Certified to Test Drinking Water (10/09/2026)
- Virginia · VA lab 460279 / EPA CT00008 · Arsenic, Lead, Uranium, Manganese, VOCs, Other metals · Public samples: ask the labVirginia DCLS - Drinking Water Certified Labs (analyte detail) (Current as of 8/1/2026)
- Pennsylvania · PA DEP 68-04413 · Arsenic, Lead, Uranium, Manganese, VOCs, Other metals · Public samples: ask the labPA DEP Accredited Labs Report - Drinking Water (chemistry) (STALE - report dated 6/11/2024)
- Massachusetts · M-CT008 · Coliform / E. coli, Lead, PFAS, Uranium · Public samples: yes (per state)MassDEP Certified Laboratories Offering Analytical Services for Private Well Owners and Residential Customers (Created and published on 12/18/2025)
- Maryland · 349 · Nitrate, Arsenic, Lead, Uranium, VOCs, Other metals · Public samples: ask the labMaryland's Certified Drinking Water Laboratories (MDE Laboratory Certification Program) (Latest Revisions: 10/1/2026)
- North Carolina · 09700 · Nitrate, Arsenic, Lead, Manganese, VOCs, Other metals · Public samples: ask the labNC SLPH Environmental Sciences - Certified Drinking Water Laboratories (Commercial) (generated on request (no date printed), fetched 2026-11-07)
- Rhode Island · LAO00346 · Coliform / E. coli · Public samples: yes (per state)RIDOH - Out of State Analytical Laboratories (March 18, 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 Tennessee 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).
TDEC Division of Water Resources - Commercial Laboratories Certified for Drinking Water Analysis. Fetched 2026-11-15 (UTC). File SHA-256 0f6771f57d5a…
Open the official source list