Metals · 2025
Selenium in Phoenix, AZ tap water
Phoenix, AZ's 2025 Selenium measurement is below the federal limit of 50 ug/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Range Sample Results | 0–2.2 ug/L | 50 ug/L MCL |
Verbatim from Phoenix, AZ's 2025 Consumer Confidence Report — source document ↗
About Selenium
A trace element from natural deposits and industrial discharge.
Essential in tiny amounts, but long-term exposure above the federal limit can cause hair and fingernail loss and circulatory problems.
How Phoenix, AZ compares
2 of the 100 systems measuring Selenium on The Water Map have it at or above the federal limit:
Nearby systems also reporting Selenium:
People also ask
+Is there Selenium in Phoenix, AZ tap water?
Yes — Phoenix, AZ's 2025 Consumer Confidence Report lists Selenium at 0–2.2 ug/L. Phoenix, AZ's 2025 Selenium measurement is below the federal limit of 50 ug/L (MCL).
+What's the federal limit for Selenium in drinking water?
The federal MCL for Selenium is 50 ug/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Selenium?
A trace element from natural deposits and industrial discharge. Essential in tiny amounts, but long-term exposure above the federal limit can cause hair and fingernail loss and circulatory problems.
+Which other U.S. cities have Selenium over the federal limit?
2 of the 100 systems on The Water Map measuring Selenium report it at or above the federal limit. Examples include Mcallen, TX, Birmingham, AL.
+Where does this Selenium measurement come from?
This page reproduces the Selenium 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.