Exceeds EPA Limit Radium EXCEEDS EPA LIMIT

Radium in Macomb, MI Drinking Water

Radium data for Macomb, Michigan · 91,934 residents · 2 ZIP codes

Not every city shows Radium in its water data; in Macomb, Michigan, federal sampling has confirmed its presence at detectable levels in at least one recent reporting cycle.

14 pCi/L
Max Level Detected
14 pCi/L
Average Level
5 pCi/L (combined Ra-226 + Ra-228)
EPA MCL
High
Health Risk
Reverse Osmosis or Ion Exchange
Best Filter Method

Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-04-05

Radium in Macomb Tap Water

Radium has been detected in Macomb, Michigan drinking water at a maximum level of 14 pCi/L2.8x the EPA MCL.

This analysis covers 91,934 residents across 2 ZIP codes in Macomb.

Macomb's overall water quality grade is A (88/100).

Is Radium in Macomb Water Safe?

Radium levels in parts of Macomb exceed the EPA MCL of 5 pCi/L (combined Ra-226 + Ra-228). 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 ion exchange filter certified under NSF 58 and testing your water independently.

Radium Levels by ZIP Code

ZIP Code Radium Level EPA Limit Status
48042 14 pCi/L 5 pCi/L (combined Ra-226 + Ra-228) Exceeds limit
48044 14 pCi/L 5 pCi/L (combined Ra-226 + Ra-228) Exceeds limit

Average radium level across Macomb: 14 pCi/L

Health Effects of Radium

  • Increased risk of bone cancer (radium accumulates in bones)
  • The body treats radium like calcium, storing it in bones
  • Lifetime cancer risk of ~1 in 10,000 at 5 pCi/L
  • No safe threshold for radioactive contamination

Health risk severity: High. Governed by the Radionuclides Rule.

How Radium Gets Into Drinking Water

  • Natural radioactive decay in underground rock formations
  • Groundwater sources (especially deep wells)
  • Mining and industrial waste
  • Higher in regions with specific geology (Midwest, parts of South)

What to Do About Radium in Macomb Water

  1. Reverse osmosis (NSF 58 certified) removes 90%+ of radium
  2. Ion exchange (water softeners) can reduce radium
  3. Point-of-use RO at kitchen tap is most cost-effective
  4. GAC filters alone are NOT effective for radium

Look for filters certified under NSF 58 for radium removal.

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