Microbac Laboratories, INC. - Dayville

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

61 LOUISA VIENS DRIVE, Dayville, CT 06241 · Open in Google Maps

Phone

(860) 774-6814

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-0465

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

• 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*').

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.

• Virginia · VA lab 460279 / EPA CT00008 · Arsenic, Lead, Uranium, Manganese, VOCs, Other metals · Public samples: ask the lab
  Virginia 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 lab
  PA 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)
• Tennessee · 04903 · Nitrate, Arsenic, Lead, VOCs, Other metals · Public samples: ask the lab
  TDEC Division of Water Resources - Commercial Laboratories Certified for Drinking Water Analysis (10/2/2026 (page footers 10/06/2026))
• Maryland · 349 · Nitrate, Arsenic, Lead, Uranium, VOCs, Other metals · Public samples: ask the lab
  Maryland'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 lab
  NC 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)

Nearest labs that take homeowner samples

1 other certified lab that takes homeowner samples is 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.

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: Windham County, CT

• Private wells: about 63,925 people, 55% of Windham County’s 116,573 residents (USGS, 2015); rank 6 of 8 counties in Connecticut by people on wells.

• EPA radon zone (indoor air): Zone 2: moderate potential (average indoor radon may be between 2 and 4 pCi/L). EPA says the zone map should not decide whether one home needs testing.
• Arsenic above 10 µg/L (USGS model): about 5,826 private-well users (95% range 4,239 to 7,888; 2010 base), rank 5 of 8 in the state. A screening estimate, not a measurement of any well.
• PFAS in public water nearby (public supply, not your well): 3 public systems serving this county reported EPA UCMR 5 results; 2 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).