Radium in Waconia, MN Drinking Water
Radium data for Waconia, Minnesota · 14,697 residents · 1 ZIP code
Over the past reporting period, water systems in Waconia, Minnesota have recorded Radium at detectable concentrations in EPA compliance samples.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-06-04
Radium in Waconia Tap Water
Radium has been detected in Waconia, Minnesota drinking water at a maximum level of 10 pCi/L — 2x the EPA MCL.
This analysis covers 14,697 residents across 1 ZIP code in Waconia.
Waconia's overall water quality grade is C (65/100).
Is Radium in Waconia Water Safe?
Radium was detected in Waconia water but currently falls within EPA limits. However, some health organizations argue the EPA MCL may not be protective enough.
If you are concerned, a reverse osmosis or ion exchange filter can reduce radium levels further.
Radium Levels by ZIP Code
| ZIP Code | Radium Level | EPA Limit | Status |
|---|---|---|---|
| 55387 | 10 pCi/L | 5 pCi/L (combined Ra-226 + Ra-228) | Exceeds limit |
| 55387 | 2.9 pCi/L | 5 pCi/L (combined Ra-226 + Ra-228) | OK |
Average radium level across Waconia: 6.45 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 Waconia Water
- Reverse osmosis (NSF 58 certified) removes 90%+ of radium
- Ion exchange (water softeners) can reduce radium
- Point-of-use RO at kitchen tap is most cost-effective
- GAC filters alone are NOT effective for radium
Look for filters certified under NSF 58 for radium removal.