Well water in North Washington UT, Maine
In North Washington UT, chloride was detected in 100% of 34 tested well samples from USGS Water Quality Portal.
7 private wells tested in state summaries; 34 individual samples from 20 wells, 1980 to 1986. Data refreshed September 3, 2026.
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.
| Contaminant | Wells tested | Above state level | Median | 95th pct | Highest | State level | |
|---|---|---|---|---|---|---|---|
| Nitrate | 7 | suppressed | * | * | 10 mg/L | ||
| Nitrite | 7 | suppressed | * | * | 1 mg/L | ||
| Arsenic | 3 | suppressed | * | * | 10 ug/L | ||
| Uranium | 3 | suppressed | * | * | 30 ug/L | ||
| Fluoride | 3 | suppressed | * | * | 2 mg/L | ||
| Manganese | 3 | suppressed | * | * | 300 ug/L |
* suppressed by the publisher because too few wells were tested.
What individual samples found
Each row summarizes every public sample for that contaminant inside North Washington UT. Above limit means above the EPA maximum contaminant level; where EPA has no enforceable limit, the row shows a health guideline or nuisance level instead.
| Contaminant | Samples | Detected | Above limit | Median | Highest | Limit | |
|---|---|---|---|---|---|---|---|
| Arsenic 1980 to 1981 | 29 | 100% | 7% | 0 | 29 | 10 ug/L EPA limit | |
| Copper 1980 to 1981 | 29 | 41% | 0% | 0 | 0.02 | 1.3 mg/L EPA limit | |
| Nitrate 1980 to 1985 | 10 | 80% | 0% | 0.01 | 0.34 | 10 mg/L EPA limit | |
| Chloride 1980 to 1986 | 34 | 100% | no limit | 3.9 | 23 | 250 mg/L nuisance level |
Sampled fewer than 10 times, too few to summarize: Lead (5), Fluoride (4), Sodium (3), Iron (3), Manganese (1).
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What this means
The contaminants most often above their limit here are arsenic (7% of 29 samples). A well next door can differ sharply from yours because bedrock fractures, well depth and plumbing all matter, so these rates describe the area, not your tap.
Chloride, Iron, and Manganese are widespread in local groundwater. They are mainly a staining and taste problem, but high manganese also carries a health advisory for infants.
What to test for in North Washington UT
- Volatile organic compounds (VOCs)3 leaking underground storage tank sites on record locally.
- PFAS3 unlined landfills on record locally.
- Arsenic7% of 29 local samples were above the limit.
- Coliform bacteriaRecommended for every private well, every year.
- FluorideDetected in 100% of local samples.
- ChlorideDetected in 100% of local samples.
- IronDetected in 100% of local samples.
- ManganeseDetected in 100% of local samples.
- NitrateRecommended for every private well, especially near farms or septic systems.
Wells in North Washington UT
67 domestic wells in North Washington UT are on record with the state since 1971. 97% are drilled into bedrock, and the typical well is 218 feet deep (one in ten goes past 394 feet).
In a typical North Washington UT well, bedrock starts about 30 feet down, the median yield is 10 gallons per minute, 24% 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 North Washington UT
Maine DEP records 3 leaking underground storage tank sites and 3 unlined landfills in North Washington UT, among 12 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.
- 3
- leaking underground storage tank sitesGasoline and heating oil that leaked from tanks move through groundwater as benzene, MTBE and other volatile organic compounds.
- 3
- unlined landfillsOlder unlined landfills are a leading source of PFAS, VOCs and metals in nearby wells.
- 6
- other remediation projects
Treatment that fits the local profile
- Arsenic
- Point-of-use reverse osmosis; Adsorptive media (iron-based) whole-house; Anion exchange
- Fluoride
- Point-of-use reverse osmosis; Activated alumina; Distillation
- Chloride
- Point-of-use reverse osmosis; Distillation
- Iron
- Oxidizing filter whole-house; Water softener (low levels); Aeration plus filtration
- Manganese
- Oxidizing filter (greensand, birm) whole-house; Water softener (low levels); Point-of-use reverse osmosis
Book a free water test in North Washington UT
A licensed local water treatment company tests your tap water in your home, walks you through the numbers, and quotes treatment only if something needs fixing. Free, about 30 minutes, no obligation.
Common questions
How deep are wells in North Washington UT?
The typical domestic well in North Washington UT is 218 feet deep, based on 67 wells reported to the state since 1971. One in ten is deeper than 394 feet. 97% are drilled into bedrock.
Is there arsenic in well water in North Washington UT?
Arsenic was detected in 100% of 29 public well samples in North Washington UT, and 7% were above the EPA limit of 10 ug/L. Arsenic has no taste or smell; a lab test is the only way to know your level.
How often should I test a private well in North Washington UT?
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
- USGS Water Quality Portal: 118 samples in North Washington UT. Data from the Water Quality Portal, a service of USGS, EPA and USDA; groundwater samples collected by USGS and cooperators. Retrieved September 3, 2026.
- Maine Tracking Network private well summaries: summaries for 6 contaminants in North Washington UT, up to 7 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: 71 well records in North Washington UT, 67 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: 12 regulated sites located in North Washington UT. 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.