PFAS ("forever chemicals") · 2026
Perfluoro-4-methoxybutanoic acid (PFMBA) in San Gabriel Valley Wc - Fontana, CA tap water
San Gabriel Valley Wc - Fontana, CA's 2026 Consumer Confidence Report tested for Perfluoro-4-methoxybutanoic acid (PFMBA) and reported no detectable amount.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample Other | Not detected NG/L | None set |
Highest single sample Source water | Not detected NG/L | None set |
Verbatim from San Gabriel Valley Wc - Fontana, CA's 2026 Consumer Confidence Report — source document ↗
About Perfluoro-4-methoxybutanoic acid (PFMBA)
Perfluoro-4-methoxybutanoic acid, a PFAS-related compound.
Monitored under EPA rules as part of broad PFAS surveillance.
How San Gabriel Valley Wc - Fontana, CA compares
1 of the 148 systems measuring Perfluoro-4-methoxybutanoic acid (PFMBA) on The Water Map have it at or above the federal limit:
Nearby systems also reporting Perfluoro-4-methoxybutanoic acid (PFMBA):
People also ask
+Is there Perfluoro-4-methoxybutanoic acid (PFMBA) in San Gabriel Valley Wc - Fontana, CA tap water?
San Gabriel Valley Wc - Fontana, CA's 2026 Consumer Confidence Report tested for Perfluoro-4-methoxybutanoic acid (PFMBA) and found no detectable amount.
+What's the federal limit for Perfluoro-4-methoxybutanoic acid (PFMBA) in drinking water?
The EPA has not set an enforceable federal limit for Perfluoro-4-methoxybutanoic acid (PFMBA). Utilities still report any measured levels in their annual Consumer Confidence Report.
+What is Perfluoro-4-methoxybutanoic acid (PFMBA)?
Perfluoro-4-methoxybutanoic acid, a PFAS-related compound. Monitored under EPA rules as part of broad PFAS surveillance.
+Which other U.S. cities have Perfluoro-4-methoxybutanoic acid (PFMBA) over the federal limit?
1 of the 148 systems on The Water Map measuring Perfluoro-4-methoxybutanoic acid (PFMBA) report it at or above the federal limit. Examples include Boonsboro Keedysville, MD.
+Where does this Perfluoro-4-methoxybutanoic acid (PFMBA) measurement come from?
This page reproduces the Perfluoro-4-methoxybutanoic acid (PFMBA) entry from the 2026 Consumer Confidence Report published by the San Gabriel Valley Wc - Fontana, 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/san-gabriel-valley-wc-fontana/2026/source.