At a glance
- What it is certified to test
- 6 of the 9 common well tests on the CT 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
- Connecticut (Connecticut Department of Public Health - Environmental Laboratory Certification Program)
- Address
- 77 COOK HILL ROAD, Windsor, CT 06095 · Open in Google Maps
- Phone
- (860) 688-7249
- Public / homeowner samples
- Public samples: yes (per state)CT DPH 'Private Well Testing' column
- Left blank on the list
- The Connecticut list (version 10/09/2026) gives no website for this lab.
Certification record
- Certificate ID
- PH-0464
- Issued by
- Connecticut Department of Public Health - Environmental Laboratory Certification Program (certification program)
- List version
- CT DPH In-State Approved Commercial Laboratories Certified to Test Drinking Water, version 10/09/2026
- We fetched it
- 29 Oct 2026 (file SHA-256 a5af85ed2624…) · open the state file
Tests on the state list
| Contaminant | On this state list |
|---|---|
| Coliform / E. coli | Named on the official list |
| Nitrate | Group-level certification |
| Arsenic | Group-level certification |
| Lead | Group-level certification |
| PFAS | Not named on this list |
| Uranium | Group-level certification |
| Radon (water) | Group-level certification |
| Manganese | Not named on this list |
| VOCs | Not named on this list |
| Other metals | Group-level certification |
Groups as written on the state list (3)
- Bacteriological (total coliform/E. coli)
- Inorganics (inorganic chemicals, physical, sanitary chemicals, nitrate, metals - some or all)
- Radiological (gross alpha/beta, radium, radon, uranium - some or all)
- 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*').
Nearest labs that take homeowner samples
4 other certified labs that take homeowner samples are within 25 miles of this lab. 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.
| Lab and tests named on its list | Town | Distance | Tests in common with this lab | Price printed | Turnaround printed | Homeowner samples: source |
|---|---|---|---|---|---|---|
| Northeast Laboratories, Inc Coliform / E. coli, Nitrate, Arsenic, Lead | Rocky Hill, CT | 14 mi | 4 | – | – | Connecticut list |
| Vallid Laboratories Inc. Coliform / E. coli, Lead, PFAS | Agawam, MA | 15 mi | 3 | – | – | Massachusetts list |
| Pace Analytical Services, LLC - East Longmeadow Nitrate, Arsenic, Lead, PFAS | East Longmeadow, MA | 16 mi | 3 | – | – | Vermont list |
| EMSL Analytical, Inc. - CT Coliform / E. coli | Meriden, CT | 21 mi | 1 | – | – | Connecticut list |
| Environmental Monitoring Lab Coliform / E. coli, Nitrate, Arsenic, Lead | Wallingford, CT | 27 mi | 4 | – | – | Connecticut list |
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: Hartford County, CT
- Private wells: about 145,452 people, 16% of Hartford County’s 895,841 residents (USGS, 2015); rank 3 of 8 counties in Connecticut by people on wells.
- EPA radon zone (indoor air): Zone 3: low potential (average indoor radon may be less than 2 pCi/L). EPA says the zone map should not decide whether one home needs testing.
- Arsenic above 10 µg/L (USGS model): about 3,591 private-well users (95% range 2,395 to 5,304; 2010 base), rank 6 of 8 in the state. A screening estimate, not a measurement of any well.
- PFAS in public water nearby (public supply, not your well): 17 public systems serving this county reported EPA UCMR 5 results; 12 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 Connecticut 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).
CT DPH In-State Approved Commercial Laboratories Certified to Test Drinking Water. Fetched 2026-10-29 (UTC). File SHA-256 a5af85ed2624…
Open the official source list