- EPA's UCMR 5 testing looked for 30 contaminants here and found 10.
- PFOS (a PFAS): found in 43 of 339 samples, average 1.1 ppt, highest 30 ppt (EPA UCMR 5 testing, Mar 2023–Dec 2025)
- PFPeA (a PFAS): found in 39 of 339 samples, average 1 ppt, highest 47 ppt (EPA UCMR 5 testing, Mar 2023–Dec 2025)
- PFOA (a PFAS): found in 36 of 339 samples, average 0.70 ppt, highest 16 ppt (EPA UCMR 5 testing, Mar 2023–Dec 2025)
- PFHxS (a PFAS): found in 22 of 339 samples, average 0.70 ppt, highest 30 ppt (EPA UCMR 5 testing, Mar 2023–Dec 2025)
- PFHxA (a PFAS): found in 31 of 339 samples, average 0.60 ppt, highest 34 ppt (EPA UCMR 5 testing, Mar 2023–Dec 2025)
- PFHpA (a PFAS): found in 13 of 339 samples, average 0.30 ppt, highest 31 ppt (EPA UCMR 5 testing, Mar 2023–Dec 2025)
- PFBA (a PFAS): found in 5 of 339 samples, average 0.30 ppt, highest 26 ppt (EPA UCMR 5 testing, Mar 2023–Dec 2025)
- PFBS (a PFAS): found in 16 of 339 samples, average 0.20 ppt, highest 8.6 ppt (EPA UCMR 5 testing, Mar 2023–Dec 2025)
- PFNA (a PFAS): found in 6 of 339 samples, average 0.10 ppt, highest 8 ppt (EPA UCMR 5 testing, Mar 2023–Dec 2025)
- PFPeS (a PFAS): found in 2 of 339 samples, average 0.0 ppt, highest 5.3 ppt (EPA UCMR 5 testing, Mar 2023–Dec 2025)
- Lead, 90th percentile: 0 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2023–Dec 31, 2025). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
Public EPA test results
Can you drink Fresno tap water? What EPA records show
EPA CA1010007 · serves Fresno, CA · about 545,970 people (EPA SDWIS)
This report shows EPA's federal records for this water system: UCMR 5 testing, lead testing and violations. It isn't a test of the water at your tap, and it has no Water Score.
Public EPA test results
City of Fresno (EPA CA1010007)
ScoreYourWater.com gives no verdict on your tap water; it shows what the public records say, as of October 14, 2026. For Fresno's main utility, City of Fresno: We found no health-based violations in EPA's records for this system (CA1010007) since July 1, 2021, as of October 14, 2026. EPA's UCMR 5 testing looked for 30 contaminants here and found 10.
What EPA records show for City of Fresno, as of October 14, 2026
We found no health-based violations in EPA's records for this system (CA1010007) since July 1, 2021, as of October 14, 2026.
Source: EPA ECHO record for City of Fresno (SDWIS). Data as of October 14, 2026.
Lead, 90th percentile: 0 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2023–Dec 31, 2025). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
EPA's UCMR 5 testing looked for 30 contaminants here and found 10.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does City of Fresno use chloramine?
We didn't find chloramine in City of Fresno's EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.