Copper in Lewiston, ME Drinking Water
Copper data for Lewiston, Maine · 37,886 residents · 3 ZIP codes
ZipCheckup's reading of Copper in Lewiston, Maine: the highest detected level is 5 ppb; the EPA limit is 1.3 mg/L (action level). Copper carries a moderate health-risk designation.
Because Copper is associated with health effects at sustained elevated exposures, residents in Lewiston, Maine may find it useful that local water systems have returned detectable concentrations - facts that bear on long-term household water decisions.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-04-05
Copper in Lewiston Tap Water
Copper has been detected in Lewiston, Maine drinking water at a maximum level of 5 ppb — below the EPA action level of 1.3 mg/L (action level).
This analysis covers 37,886 residents across 3 ZIP codes in Lewiston.
Lewiston's overall water quality grade is C (68/100).
Is Copper in Lewiston Water Safe?
If you live in an affected ZIP code, consider installing a reverse osmosis or nsf 53 carbon block filter certified under NSF 53 and testing your water independently.
Copper Levels by ZIP Code
| ZIP Code | Copper Level | EPA Limit | Status |
|---|---|---|---|
| 04240 | 5 ppm | 1.3 mg/L (action level) | OK |
| 04241 | 5 ppm | 1.3 mg/L (action level) | OK |
| 04243 | 5 ppm | 1.3 mg/L (action level) | OK |
Average copper level across Lewiston: 5 ppb
Health Effects of Copper
- Nausea, vomiting, and diarrhea (short-term, high levels)
- Liver and kidney damage (long-term)
- Particularly dangerous for people with Wilson's disease
- Infants are more sensitive than adults
Health risk severity: Moderate. Governed by the Lead and Copper Rule.
How Copper Gets Into Drinking Water
- Corrosion of copper household plumbing
- Acidic (low pH) water accelerates copper leaching
- New copper pipes leach more than aged ones
- Mining and industrial discharge (rare for tap water)
What to Do About Copper in Lewiston Water
- Run water for 30-60 seconds before use (flushes stagnant water)
- Install an NSF 53 or NSF 58 certified filter
- If pH is low, consider a whole-home acid neutralizer
- Test first-draw morning water to check actual copper levels
Look for filters certified under NSF 53 for copper removal.