West Covina, California Water Quality Report
Water quality data for 12 water systems serving 11,415 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 9.8 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 98% | Near 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 | 0.004 | 0.010 ug/L | 0.001 ug/L(EWG) | 36% | Within limit |
| PFOA | 0.006 | 0.004 ug/L | 0.090 ug/L(EWG) | 143% | Above limit |
| PFOS | 0.004 | 0.004 ug/L | 0.300 ug/L(EWG) | 110% | Above limit |
| PFPeA | 0.004 | 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 (17)
45
Sep 9, 2025
45
Sep 9, 2025
45
Jul 18, 2025
45
Jul 18, 2025
45
Jul 18, 2025
72
Jul 1, 2025
52
Jan 1, 2025
52
Jan 1, 2025
52
Jan 1, 2025
52
Jan 1, 2025
52
Jul 1, 2024
52
Jul 1, 2024
72
Jan 3, 2022
72
Dec 29, 2020
66
Jan 1, 2019
72
Dec 13, 2018
71
Jul 1, 2016
Resolved Violations (483)
59
Jan 1, 2025 — Jun 30, 2025
59
Jan 1, 2025 — Jun 30, 2025
3A
Dec 1, 2024 — Dec 31, 2024
3A
Dec 1, 2024 — Dec 31, 2024
3A
Dec 1, 2024 — Dec 31, 2024
+ 478 more resolved violations
Frequently Asked Questions
Is West Covina tap water safe to drink?
West Covina's water has 2 contaminants detected above EPA limits. While the water is treated, residents may want to consider additional filtration.
What contaminants are in West Covina tap water?
7 contaminants have been detected in West Covina's water supply across 12 water systems. See the full contaminant table above for details.
How can I improve my water quality in West Covina?
Install a water filter rated for the specific contaminants found in West Covina's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does West Covina have any water quality violations?
Yes, West Covina currently has 84 active violations. See the violations section above for details.