Arsenic in Wells, ME Drinking Water
Arsenic data for Wells, Maine · 11,544 residents · 1 ZIP code
In Wells, Maine, Arsenic has been detected in the public water supply — a contaminant that health agencies track because of documented effects associated with prolonged exposure at elevated concentrations.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-06-04
Arsenic in Wells Tap Water
Arsenic has been detected in Wells, Maine drinking water at a maximum level of 5.3 ppb — below the EPA MCL of 10 ppb.
This analysis covers 11,544 residents across 1 ZIP code in Wells.
Wells's overall water quality grade is D (45/100).
Is Arsenic in Wells Water Safe?
Arsenic was detected in Wells water but currently falls within EPA limits. However, some health organizations argue the EPA MCL may not be protective enough.
If you are concerned, a reverse osmosis filter can reduce arsenic levels further.
Arsenic Levels by ZIP Code
| ZIP Code | Arsenic Level | EPA Limit | Status |
|---|---|---|---|
| 04090 | 5.3 ppb | 10 ppb | OK |
Average arsenic level across Wells: 5.3 ppb
Health Effects of Arsenic
- Increased risk of skin, bladder, lung, and kidney cancer
- Cardiovascular disease and type 2 diabetes
- Skin changes (darkening, thickening, lesions)
- Developmental effects in children exposed in utero
Health risk severity: High. Governed by the Arsenic Rule (2006).
How Arsenic Gets Into Drinking Water
- Natural deposits in rock and soil (especially in western U.S.)
- Runoff from orchards and glass/electronics production
- Historical use of arsenic-based pesticides
- Well water in areas with arsenic-rich geology
What to Do About Arsenic in Wells Water
- Install a reverse osmosis (RO) system certified under NSF 58
- Adsorptive media filters (iron-based) can also reduce arsenic
- Have well water tested if on a private supply
- Boiling water does NOT remove arsenic — it concentrates it
Look for filters certified under NSF 53 / NSF 58 for arsenic removal.