San Bernardino, California Water Quality Report
Water quality data for 15 water systems serving 379,210 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 44.0 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 440% | Above guideline |
| PFBS | 0.004 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHxA | 0.004 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxS | 0.006 | 0.010 ug/L | 0.001 ug/L(EWG) | 62% | Within limit |
| PFPeA | 0.006 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
Recommended Water Filters
Based on the contaminants detected in your water supply, these filtration systems are recommended:
Reverse Osmosis (RO)
Reverse osmosis systems remove up to 99% of PFAS compounds. Recommended for homes with detected PFAS.
Up to 99% PFAS removal
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Compliance & Violations
Active Violations (2)
52
Oct 1, 2021
52
Oct 1, 2018
Resolved Violations (498)
02
Apr 1, 2025 — Jun 30, 2025
02
Apr 1, 2025 — Jun 30, 2025
02
Jan 1, 2025 — Mar 31, 2025
02
Jan 1, 2025 — Mar 31, 2025
02
Oct 1, 2024 — Dec 31, 2024
+ 493 more resolved violations
Frequently Asked Questions
Is San Bernardino tap water safe to drink?
San Bernardino's water meets all EPA maximum contaminant levels. However, 5 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in San Bernardino tap water?
5 contaminants have been detected in San Bernardino's water supply across 15 water systems. See the full contaminant table above for details.
How can I improve my water quality in San Bernardino?
Install a water filter rated for the specific contaminants found in San Bernardino's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does San Bernardino have any water quality violations?
Yes, San Bernardino currently has 28 active violations. See the violations section above for details.