Is Thomaston, ME tap water safe?
The short answer
None of the 3 utilities serving Thomaston has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records.
Maine Water Company Warren Division, which serves the most people here, has 1 result above the health goal. The worst: Arsenic at 3.6 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Thomaston’s ZIP codes, from EPA’s estimates.
- Open report
Maine Water Company Warren Division
Maine · serves 815 people · about 260 in Thomaston
1 result above the health goal. The worst: Arsenic at 3.6 ppb, above the health goal.
No health-based violations since 2016
- Open report
Four Winds Homeowners Assn
Maine · serves 43 people · under 100 in Thomaston
1 result above the health goal. The worst: Lead at 1.6 ppb, above the health goal.
No health-based violations since 2016
- Open report
Maine Water Company Camden & Rockland
Maine · serves 21,315 people · under 100 in Thomaston
1 result above the health goal. The worst: Lead at 4.5 ppb, above the health goal.
No health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Maine Water Company Warren Division’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: Arsenic
Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Arsenic
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Arsenic
Water testing near Thomaston
The 3 labs Maine certifies closest to Thomaston, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Maine Coast Lab dba Water Quality and Compliance Services, Inc.
Wiscasset, ME · about 27 miles
Certified for bacteria, nitrate
(207) 882-5476Website: Maine Coast Lab dba Water Quality and Compliance Services, Inc.
Bigelow Laboratory for Ocean Sciences
East Boothbay, ME · about 27 miles
Certified for PFAS
(207) 315-2567Website: Bigelow Laboratory for Ocean Sciences
Health and Environmental Testing Laboratory
Augusta, ME · about 33 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS, radioactivity
(207) 287-2727Website: Health and Environmental Testing Laboratory
Maine Health and Environmental Testing Laboratory: Well water test kits ordered online, from a bacteria-only test to full panels for new wells and home sales. The lab must receive the sample within 30 hours of collection. The basic safety test is $42, bacteria alone $27, first-draw lead $32, and the fuller well tests $127 to $147. Maine Private Well and Radiological Water and Air Test.
All 53 certified labs for MaineZIP codes in Thomaston
Which ZIP codes are in Thomaston: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: Maine CDC Drinking Water Program, all accredited laboratories and in-state commercial drinking water labs; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Thomaston
Towns nearby with a page of their own.
What to do next
- Read Maine Water Company Warren Division’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for ArsenicRanked by certification and what they cost over five years.The best reverse osmosis systems, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water