Chromium-6 in Brentwood, CA Drinking Water
Chromium-6 data for Brentwood, California · 65,022 residents · 1 ZIP code
Not every city shows Chromium-6 in its water data; in Brentwood, California, federal sampling has confirmed its presence at detectable levels in at least one recent reporting cycle.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-05-14
Chromium-6 in Brentwood Tap Water
Chromium-6 has been detected in Brentwood, California drinking water at a maximum level of 5.3 ppb — below the EPA MCL of 100 ppb (total chromium MCL).
This analysis covers 65,022 residents across 1 ZIP code in Brentwood.
Brentwood's overall water quality grade is B (70/100).
Is Chromium-6 in Brentwood Water Safe?
Chromium-6 was detected in Brentwood 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 strong-base anion exchange filter can reduce chromium-6 levels further.
Chromium-6 Levels by ZIP Code
| ZIP Code | Chromium-6 Level | EPA Limit | Status |
|---|---|---|---|
| 94513 | 5.3 ppb | 100 ppb (total chromium MCL) | OK |
Average chromium-6 level across Brentwood: 5.3 ppb
Health Effects of Chromium-6
- Stomach and intestinal cancer (likely carcinogen via ingestion)
- Known carcinogen when inhaled
- Liver and kidney damage
- Reproductive and developmental harm
Health risk severity: High. Governed by the National Primary Drinking Water Regulations.
How Chromium-6 Gets Into Drinking Water
- Industrial discharge from steel and pulp mills
- Natural erosion of chromium deposits
- Coal ash disposal sites
- Cooling tower discharge
What to Do About Chromium-6 in Brentwood Water
- Reverse osmosis systems are most effective
- Strong-base anion exchange can reduce chromium-6
- Standard carbon filters are NOT effective for chromium-6
- Look for NSF 58 certification
Look for filters certified under NSF 58 for chromium-6 removal.