Disinfection byproducts · 2025
Chlorite in Phoenix, AZ tap water
Phoenix, AZ's 2025 Chlorite measurement is below the federal limit of 1 mg/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Running annual avg System-wide | 0.3 mg/L | 1 mg/L MCL |
Range Sample Results | 0–0.7 mg/L | 1 mg/L MCL |
Verbatim from Phoenix, AZ's 2025 Consumer Confidence Report — source document ↗
How Phoenix, AZ compares
5 of the 68 systems measuring Chlorite on The Water Map have it at or above the federal limit:
Nearby systems also reporting Chlorite:
People also ask
+Is there Chlorite in Phoenix, AZ tap water?
Yes — Phoenix, AZ's 2025 Consumer Confidence Report lists Chlorite at 0.3 mg/L. Phoenix, AZ's 2025 Chlorite measurement is below the federal limit of 1 mg/L (MCL).
+What's the federal limit for Chlorite in drinking water?
The federal MCL for Chlorite is 1 mg/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+Which other U.S. cities have Chlorite over the federal limit?
5 of the 68 systems on The Water Map measuring Chlorite report it at or above the federal limit. Examples include Mcallen, TX, St Petersburg, FL, Antioch, CA.
+Where does this Chlorite measurement come from?
This page reproduces the Chlorite 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.