Disinfectants · 2024
Chlorine in Hayward, CA tap water
Hayward, CA's 2024 Chlorine measurement is below the federal limit of 4 mg/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Range or Level Found | 2.2–3.3 mg/L | 4 mg/L MCL |
Average System-wide | 2.9 mg/L | 4 mg/L MCL |
Verbatim from Hayward, CA's 2024 Consumer Confidence Report — source document ↗
About Chlorine
A disinfectant added to drinking water to kill bacteria and viruses.
Effective and necessary, but high residual levels can cause taste and odor issues; the EPA caps the residual disinfectant level.
How Hayward, CA compares
1 of the 101 CA systems measuring Chlorine on The Water Map have it at or above the federal limit:
Nearby systems also reporting Chlorine:
People also ask
+Is there Chlorine in Hayward, CA tap water?
Yes — Hayward, CA's 2024 Consumer Confidence Report lists Chlorine at 2.9 mg/L. Hayward, CA's 2024 Chlorine measurement is below the federal limit of 4 mg/L (MCL).
+What's the federal limit for Chlorine in drinking water?
The federal MCL for Chlorine is 4 mg/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Chlorine?
A disinfectant added to drinking water to kill bacteria and viruses. Effective and necessary, but high residual levels can cause taste and odor issues; the EPA caps the residual disinfectant level.
+Which other U.S. cities have Chlorine over the federal limit?
1 of the 101 CA systems on The Water Map measuring Chlorine report it at or above the federal limit. Examples include Esparto C.s.d. — Esparto, Ca, CA.
+Where does this Chlorine measurement come from?
This page reproduces the Chlorine entry from the 2024 Consumer Confidence Report published by the Hayward, 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/hayward/2024/source.