What EPA records show for Golden State WC - West Orange County
EPA system ID CA3010022 · serves Orange County, CA · about 114,693 people (EPA records)
Here's what EPA has on file for this water system: its testing for newer contaminants like PFAS (UCMR 5), lead testing and violations. It's not a test of your tap, and there's no Water Score here.
Public EPA test results
Golden State WC - West Orange County (EPA CA3010022)
What EPA records show for Golden State WC - West Orange County, as of October 14, 2026
We found no health-standard violations in EPA's records for this system (CA3010022) since July 1, 2021, as of October 14, 2026.
Lead: 9 in 10 homes tested came in at or below 2.2 ppb, at or below EPA's 15 ppb action level (latest EPA result for a testing period that ran on or after July 1, 2021: Jan 1, 2023–Dec 31, 2025). This is one number for the whole water system, from homes the utility tested. It isn't a result for your home.
EPA's UCMR 5 testing looked for 30 contaminants here and found 6.
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 Golden State WC - West Orange County use chloramine?
We didn't find chloramine in Golden State WC - West Orange County's EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.
Reported results in EPA records (data as of Oct 14–15, 2026)
EPA's UCMR 5 testing looked for 30 contaminants here and found 6.
Lithium: found in 3 of 24 samples, average 3.53 µg/L, highest 34.3 µg/L (EPA UCMR 5 testing, Mar 2023–Jul 2025)
PFOS (a PFAS): found in 9 of 24 samples, average 3.5 ppt, highest 16 ppt (EPA UCMR 5 testing, Mar 2023–Jul 2025)
PFHxS (a PFAS): found in 9 of 24 samples, average 2.4 ppt, highest 9.3 ppt (EPA UCMR 5 testing, Mar 2023–Jul 2025)
PFOA (a PFAS): found in 5 of 24 samples, average 1.4 ppt, highest 8.1 ppt (EPA UCMR 5 testing, Mar 2023–Jul 2025)
PFHxA (a PFAS): found in 4 of 24 samples, average 0.50 ppt, highest 3.4 ppt (EPA UCMR 5 testing, Mar 2023–Jul 2025)
PFPeA (a PFAS): found in 3 of 24 samples, average 0.40 ppt, highest 3.6 ppt (EPA UCMR 5 testing, Mar 2023–Jul 2025)
Lead: 9 in 10 homes tested came in at or below 2.2 ppb, at or below EPA's 15 ppb action level (latest EPA result for a testing period that ran on or after July 1, 2021: Jan 1, 2023–Dec 31, 2025). This is one number for the whole water system, from homes the utility tested. It isn't a result for your home.
Source: EPA SDWIS (ECHO SDWA bulk download), data as of Oct 14, 2026
Source: EPA UCMR 5 occurrence data, data as of Oct 15, 2026
These are EPA's public records for this water system, shown as of October 14, 2026. If you represent this utility, or think a record here is wrong, tell us: Report an error. If the error is in EPA's own records, your state drinking water program can correct it there, and this page updates at our next data refresh.
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