Radium in Clarendon Hills, IL Drinking Water
Radium data for Clarendon Hills, Illinois · 8,702 residents · 1 ZIP code
Recent water testing in Clarendon Hills, Illinois has returned Radium readings above detection thresholds.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-05-14
Radium in Clarendon Hills Tap Water
Radium has been detected in Clarendon Hills, Illinois drinking water at a maximum level of 8.56 pCi/L — 1.71x the EPA MCL.
This analysis covers 8,702 residents across 1 ZIP code in Clarendon Hills.
Clarendon Hills's overall water quality grade is B (75/100).
Is Radium in Clarendon Hills Water Safe?
Radium was detected in Clarendon Hills 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 |
|---|---|---|---|
| 60514 | 8.56 pCi/L | 5 pCi/L (combined Ra-226 + Ra-228) | Exceeds limit |
Average radium level across Clarendon Hills: 8.56 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 Clarendon Hills 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.