PFAS ("forever chemicals") · 2025
PFBA in Phoenix, AZ tap water
Phoenix, AZ's 2025 report shows PFBA detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Minimum Lowest Level | 5 ng/L | None set |
Maximum System-wide | 6 ng/L | None set |
Average System-wide | 5 ng/L | None set |
Verbatim from Phoenix, AZ's 2025 Consumer Confidence Report — source document ↗
About PFBA
Perfluorobutanoic acid, a shorter-chain PFAS 'forever chemical.'
Monitored under EPA rules; persistent in the environment and the human body.
How Phoenix, AZ compares
Nearby systems also reporting PFBA:
People also ask
+Is there PFBA in Phoenix, AZ tap water?
Yes — Phoenix, AZ's 2025 Consumer Confidence Report lists PFBA at 5 ng/L. Phoenix, AZ's 2025 report shows PFBA detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for PFBA in drinking water?
The EPA has not set an enforceable federal limit for PFBA. Utilities still report any measured levels in their annual Consumer Confidence Report.
+What is PFBA?
Perfluorobutanoic acid, a shorter-chain PFAS 'forever chemical.' Monitored under EPA rules; persistent in the environment and the human body.
+Where does this PFBA measurement come from?
This page reproduces the PFBA entry from the 2025 Consumer Confidence Report published by the Phoenix, AZ 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/az/phoenix/2025/source.