Clovis, California Water Quality Report
Water quality data for 10 water systems serving 131,647 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| PFBA | 0.006 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFBS | 0.008 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFDA | 0.003 | No federal limit | 0.006 ug/L(EWG) | 52% | Below guideline |
| PFHpA | 0.006 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxA | 0.008 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxS | 0.009 | 0.010 ug/L | 0.001 ug/L(EWG) | 88% | Near limit |
| PFNA | 0.007 | 0.010 ug/L | — | 69% | Within limit |
| PFOA | 0.018 | 0.004 ug/L | 0.090 ug/L(EWG) | 450% | Above limit |
| PFOS | 0.041 | 0.004 ug/L | 0.300 ug/L(EWG) | 1025% | Above limit |
| PFPeA | 0.008 | 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 (30)
4G
Oct 17, 2024
4G
Oct 17, 2024
2E
Oct 17, 2024
2E
Oct 17, 2024
4G
Oct 17, 2024
2E
Oct 17, 2024
52
Oct 1, 2023
52
Oct 1, 2022
71
Jul 1, 2021
52
Oct 1, 2020
71
Jul 1, 2017
51
Jul 1, 1993
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Unknown
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Unknown
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Unknown
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Unknown
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Resolved Violations (470)
01
Jul 1, 2025 — Sep 30, 2025
02
Apr 1, 2025 — Jun 30, 2025
01
Apr 1, 2025 — Jun 30, 2025
02
Apr 1, 2025 — Jun 30, 2025
02
Apr 1, 2025 — Jun 30, 2025
+ 465 more resolved violations
Frequently Asked Questions
Is Clovis tap water safe to drink?
Clovis'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 Clovis tap water?
10 contaminants have been detected in Clovis's water supply across 10 water systems. See the full contaminant table above for details.
How can I improve my water quality in Clovis?
Install a water filter rated for the specific contaminants found in Clovis's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Clovis have any water quality violations?
Yes, Clovis currently has 44 active violations. See the violations section above for details.