Is Guilford, ME tap water safe?
The short answer
2 of the 2 utilities serving Guilford have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records: Guilford - Sangerville Utilities District and Covered Bridge Apartments.
Guilford - Sangerville Utilities District, which serves the most people here, has 2 results above the health goal. The worst: Lead at 2.5 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 Guilford’s ZIP codes, from EPA’s estimates.
- Open report
Guilford - Sangerville Utilities District
Maine · serves 1,535 people · under 100 in Guilford
2 results above the health goal. The worst: Lead at 2.5 ppb, above the health goal.
1 health-based violation since 2016
- Open report
Covered Bridge Apartments
Maine · serves 25 people · lists Guilford among the places it serves
Nothing in its records is above a health goal.
2 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 Guilford - Sangerville Utilities District’s water, which serves the most people here. Another utility’s report names what handles its own results.
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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: Lead, 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: Lead, Arsenic
Water testing near Guilford
The 3 labs Maine certifies closest to Guilford, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Acheron Inc. dba ClearWater Laboratory
Newport, ME · about 26 miles
Certified for bacteria, nitrate, minerals and other inorganics
(207) 368-5786Website: Acheron Inc. dba ClearWater Laboratory
Maine Laboratories LLC
Norridgewock, ME · about 44 miles
Certified for PFAS
NELAnalytical
Winslow, ME · about 49 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, radioactivity
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 Guilford
Which ZIP codes are in Guilford: 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.
What to do next
- Read Guilford - Sangerville Utilities District’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for LeadRanked by certification and what they cost over five years.The best water filters for lead, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water