Radium in Culver City, CA Drinking Water
Radium data for Culver City, California · 3,875,566 residents · 4 ZIP codes
EPA records show Radium detections in Culver City, California water samples.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-05-14
Radium in Culver City Tap Water
Radium has been detected in Culver City, California drinking water at a maximum level of 8 pCi/L — 1.6x the EPA MCL.
This analysis covers 3,875,566 residents across 4 ZIP codes in Culver City.
Culver City's overall water quality grade is C (56/100).
Is Radium in Culver City Water Safe?
Radium was detected in Culver City 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 |
|---|---|---|---|
| 90230 | 8 pCi/L | 5 pCi/L (combined Ra-226 + Ra-228) | Exceeds limit |
| 90231 | 8 pCi/L | 5 pCi/L (combined Ra-226 + Ra-228) | Exceeds limit |
| 90232 | 8 pCi/L | 5 pCi/L (combined Ra-226 + Ra-228) | Exceeds limit |
| 90233 | 8 pCi/L | 5 pCi/L (combined Ra-226 + Ra-228) | Exceeds limit |
Average radium level across Culver City: 8 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 Culver City 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.