Physical & aggregate · 2025
pH in City of Vacaville, CA tap water
City of Vacaville, CA's 2025 report shows pH detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Source water | 8.141333333333334 PH | None set |
Highest single sample Other | 8.42 PH | None set |
Highest single sample Entry point | 8.4 PH | None set |
Average Entry point | 8.4 PH | None set |
Average Other | 8.308571428571428 PH | None set |
Highest single sample Source water | 8.65 PH | None set |
Verbatim from City of Vacaville, CA's 2025 Consumer Confidence Report — source document ↗
About pH
A measure of how acidic or basic the water is.
Regulated only as a secondary standard; very low or high pH can corrode pipes or affect taste.
How City of Vacaville, CA compares
5 of the 226 systems measuring pH on The Water Map have it at or above the federal limit:
Nearby systems also reporting pH:
People also ask
+Is there pH in City of Vacaville, CA tap water?
Yes — City of Vacaville, CA's 2025 Consumer Confidence Report lists pH at 8.4 PH. City of Vacaville, CA's 2025 report shows pH detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for pH in drinking water?
The EPA has not set an enforceable federal limit for pH. Utilities still report any measured levels in their annual Consumer Confidence Report.
+What is pH?
A measure of how acidic or basic the water is. Regulated only as a secondary standard; very low or high pH can corrode pipes or affect taste.
+Which other U.S. cities have pH over the federal limit?
5 of the 226 systems on The Water Map measuring pH report it at or above the federal limit. Examples include High Point, NC, Phoenix, AZ, City of Hemet, CA.
+Where does this pH measurement come from?
This page reproduces the pH entry from the 2025 Consumer Confidence Report published by the City of Vacaville, CA water utility — the annual drinking-water report every U.S. utility is required by federal law to publish. The original source document is archived at /water/ca/vacaville/2025/source.