Porterville, California Water Quality Report
Water quality data for 14 water systems serving 65,721 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 11.6 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 116% | Above guideline |
| PFBA | 0.006 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFBS | 0.009 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHpA | 0.006 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxA | 0.009 | 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 | 0.022 | 0.004 ug/L | 0.090 ug/L(EWG) | 550% | Above limit |
| PFOS | 0.023 | 0.004 ug/L | 0.300 ug/L(EWG) | 575% | Above limit |
| PFPeA | 0.009 | 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 (11)
4G
Oct 17, 2024
2E
Oct 17, 2024
4G
Oct 17, 2024
4G
Oct 17, 2024
2E
Oct 17, 2024
2E
Oct 17, 2024
4G
Oct 17, 2024
2E
Oct 17, 2024
71
Jul 1, 2022
71
Jul 1, 2016
71
Jul 1, 2015
Resolved Violations (489)
08
Apr 1, 2025 — Apr 30, 2025
08
Apr 1, 2025 — Apr 30, 2025
4B
Sep 1, 2024
3A
Oct 1, 2023 — Oct 31, 2023
3A
Mar 1, 2023 — Mar 31, 2023
+ 484 more resolved violations
Frequently Asked Questions
Is Porterville tap water safe to drink?
Porterville'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 Porterville tap water?
9 contaminants have been detected in Porterville's water supply across 14 water systems. See the full contaminant table above for details.
How can I improve my water quality in Porterville?
Install a water filter rated for the specific contaminants found in Porterville's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Porterville have any water quality violations?
Yes, Porterville currently has 80 active violations. See the violations section above for details.