Exceeds EPA Limit Copper EXCEEDS EPA LIMIT

Copper in Grand Rapids, MN Drinking Water

Copper data for Grand Rapids, Minnesota · 11,551 residents · 3 ZIP codes

Because Copper is associated with health effects at sustained elevated exposures, residents in Grand Rapids, Minnesota may find it useful that local water systems have returned detectable concentrations — facts that bear on long-term household water decisions.

1390 ppb
Max Level Detected
1390 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: 2026-05-14

Copper in Grand Rapids Tap Water

Copper has been detected in Grand Rapids, Minnesota drinking water at a maximum level of 1390 ppb — 1.07x the EPA action level.

This analysis covers 11,551 residents across 3 ZIP codes in Grand Rapids.

Grand Rapids's overall water quality grade is B (82/100).

Is Copper in Grand Rapids Water Safe?

Copper levels in parts of Grand Rapids 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
55730 1390 ppb 1.3 mg/L (action level) Exceeds limit
55744 1390 ppb 1.3 mg/L (action level) Exceeds limit
55745 1390 ppb 1.3 mg/L (action level) Exceeds limit

Average copper level across Grand Rapids: 1390 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 Grand Rapids 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.

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