Well water in Milbridge, Maine
In Milbridge, 9% of 57 private wells tested had arsenic above the Maine guideline (10 ug/L), according to Maine CDC.
78 private wells tested in state summaries. Data refreshed .
What homeowner tests found
Maine Tracking Network private well summaries: private wells tested and reported to the state. Shares are against the level the state applies to each contaminant, named in the last column; several are stricter than EPA.
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What this means
Among homeowners in Milbridge who sent a sample to the state lab, the health-based limits most often exceeded were arsenic (9% of 57 wells), uranium (4% of 53 wells), and fluoride (3% of 78 wells). These are ordinary wells tested by their owners, so the shares are the best available picture of a typical well here, with one caveat: people test more often when they suspect a problem.
What to test for in Milbridge
- Volatile organic compounds (VOCs)2 leaking underground storage tank sites on record locally.
- PFAS1 unlined landfill on record locally.
- Arsenic9% of 57 local wells tested were above the Maine guideline.
- Manganese5% of 57 local wells tested were above the Maine guideline.
- Uranium4% of 53 local wells tested were above the Maine guideline.
- Fluoride3% of 78 local wells tested were above the Maine guideline.
- Coliform bacteriaRecommended for every private well, every year.
- NitrateRecommended for every private well, especially near farms or septic systems.
Wells in Milbridge
310 domestic wells in Milbridge are on record with the state since 1970. 97% are drilled into bedrock, and the typical well is 203 feet deep (one in ten goes past 380 feet).
In a typical Milbridge well, bedrock starts about 11 feet down, the median yield is 4.25 gallons per minute, 34% of wells yield under 3 gallons per minute and usually need a storage tank.
Bedrock wells are where arsenic, uranium and radon come from: the water sits in fractures in granite and metamorphic rock and picks up whatever the rock carries. That is why testing for those three matters more here than in a dug or gravel well.
Contamination sources on record in Milbridge
Maine DEP records 2 leaking underground storage tank sites and 1 unlined landfill in Milbridge, among 6 regulated sites in total. Groundwater does not follow property lines, so a well within a few hundred feet of one of these is worth testing for what that site could release.
- 2
- leaking underground storage tank sitesGasoline and heating oil that leaked from tanks move through groundwater as benzene, MTBE and other volatile organic compounds.
- 1
- unlined landfillOlder unlined landfills are a leading source of PFAS, VOCs and metals in nearby wells.
- 3
- other remediation projects
Treatment that fits the local profile
- Arsenic
- Point-of-use reverse osmosis; Adsorptive media (iron-based) whole-house; Anion exchange
- Manganese
- Oxidizing filter (greensand, birm) whole-house; Water softener (low levels); Point-of-use reverse osmosis
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Common questions
How deep are wells in Milbridge?
The typical domestic well in Milbridge is 203 feet deep, based on 310 wells reported to the state since 1970. One in ten is deeper than 380 feet. 97% are drilled into bedrock.
How often should I test a private well in Milbridge?
Test for bacteria and nitrate every year. Test once for arsenic, uranium, radon, fluoride, manganese and PFAS, then again every three to five years or after any change in taste, color, or plumbing.
Sources
- Maine Tracking Network private well summaries: summaries for 6 contaminants in Milbridge, up to 78 wells each. Town summaries of private well tests run by the Maine Health and Environmental Testing Laboratory, published by Maine CDC through the Maine Tracking Network. Shares are against Maine's guideline for each analyte (arsenic 10 ug/L, uranium 30 ug/L, fluoride 2 mg/L, manganese 0.3 mg/L, nitrate 10 mg/L, nitrite 1 mg/L). Towns with too few tests are suppressed (NR). Only the share above the guideline and wells tested are published; no medians. Retrieved September 3, 2026.
- Maine Geological Survey well database: 331 well records in Milbridge, 310 domestic. Well construction records reported to the Maine Geological Survey by licensed well drillers. Only aggregates are shown; owner names and addresses are never stored. Retrieved September 3, 2026.
- Maine DEP regulated sites: 6 regulated sites located in Milbridge. Remediation sites, leaking underground storage tanks and closed municipal landfills from the Maine Department of Environmental Protection. Retrieved September 3, 2026.
Non-detects count as samples and are treated as zero when computing medians. Exactly at the limit counts as not above it. A sample belongs to the town containing the well's reported coordinates.