Exceeds EPA Limit Copper EXCEEDS EPA LIMIT

Copper in Raleigh, NC Drinking Water

Copper data for Raleigh, North Carolina · 560,455 residents · 17 ZIP codes

ZipCheckup's reading of Copper in Raleigh, North Carolina: Copper carries a moderate health-risk designation.

Across Raleigh, North Carolina, federal monitoring data has captured Copper in water samples at detectable concentrations in the most recent available reporting cycle.

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

Copper in Raleigh Tap Water

Copper appears in Raleigh, North Carolina records only as an action-level exceedance on record. The EPA logs copper under the CU90 code only at or above the 1.3 mg/L action level and transmits no verified copper concentration. 7 ZIP codes in Raleigh carry a copper action-level exceedance on record. A ZIP with no copper record has not been shown to be clean: absence means no exceedance was reported, not that copper is safe.

This analysis covers 560,455 residents across 17 ZIP codes in Raleigh.

Is Copper in Raleigh Water Safe?

Copper appears here only as an action-level exceedance on record. The EPA records copper under the CU90 code only at or above the 1.3 mg/L action level and transmits no verified copper concentration. A system with no copper record has not been shown to be clean.

If a ZIP in Raleigh carries a copper exceedance on record, consider installing a reverse osmosis or nsf 53 carbon block filter certified under NSF 53 and testing your water independently.

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 Raleigh 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

HomeContaminantsCopperNorth Carolina → Raleigh

How to cite this page

APA ZipCheckup. (2026). Copper in Raleigh, NC Drinking Water. https://zipcheckup.com/contaminants/copper/raleigh-nc/
BibTeX
@misc{zipcheckup-contaminants-copper-raleigh-nc,
  author = {{ZipCheckup}},
  title  = {{Copper in Raleigh, NC Drinking Water}},
  year   = {2026},
  url    = {https://zipcheckup.com/contaminants/copper/raleigh-nc/}
}

Page version: August 2026.

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