Exceeds EPA Limit Copper EXCEEDS EPA LIMIT

Copper in Nantucket, MA Drinking Water

Copper data for Nantucket, Massachusetts · 14,056 residents · 2 ZIP codes

ZipCheckup's reading of Copper in Nantucket, Massachusetts: the highest detected level is 1490 ppb; the EPA limit is 1.3 mg/L (action level). Copper carries a moderate health-risk designation.

Water quality records for Nantucket, Massachusetts show Copper detections on file - a finding that places it among the contaminants worth tracking for this area.

1490 ppb
Max Level Detected
1490 ppb
Average Level
1.3 mg/L (action level)
EPA action level
Moderate
Health Risk
Reverse Osmosis or NSF 53 Carbon Block
Best Filter Method

Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-07-13

Copper in Nantucket Tap Water

Copper has been detected in Nantucket, Massachusetts drinking water at a maximum level of 1490 ppb — 1.15x the EPA action level.

This analysis covers 14,056 residents across 2 ZIP codes in Nantucket.

Nantucket's overall water quality grade is C (67/100).

Is Copper in Nantucket Water Safe?

Copper levels in parts of Nantucket exceed the EPA action level of 1.3 mg/L (action level). The EPA requires water systems to take corrective action when this limit is exceeded.

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
02554 1490 ppb 1.3 mg/L (action level) Exceeds limit
02584 1490 ppb 1.3 mg/L (action level) Exceeds limit

Average copper level across Nantucket: 1490 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 Nantucket Water

  1. Run water for 30-60 seconds before use (flushes stagnant water)
  2. Install an NSF 53 or NSF 58 certified filter
  3. If pH is low, consider a whole-home acid neutralizer
  4. Test first-draw morning water to check actual copper levels

Look for filters certified under NSF 53 for copper removal.

Related

Home → Contaminants → Copper → Massachusetts → Nantucket

How to cite this page

APA ZipCheckup. (2026). Copper in Nantucket, MA Drinking Water. https://zipcheckup.com/contaminants/copper/nantucket-ma/
BibTeX 
@misc{zipcheckup-contaminants-copper-nantucket-ma,
  author = {{ZipCheckup}},
  title  = {{Copper in Nantucket, MA Drinking Water}},
  year   = {2026},
  url    = {https://zipcheckup.com/contaminants/copper/nantucket-ma/}
}

Data as of July 2026.

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