Disinfectants · 2023
Chloramine in Westborough Water District — South San Francisco, Ca, CA tap water
Westborough Water District — South San Francisco, Ca, CA's 2023 Chloramine level is between 80% and 100% of the federal limit (4 mg/L MCL) — measured but not in violation.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average System-wide | 3.69 mg/L | 4 mg/L MCL |
Range or Level Found | 0.41–3.69 mg/L | 4 mg/L MCL |
Verbatim from Westborough Water District — South San Francisco, Ca, CA's 2023 Consumer Confidence Report — source document ↗
About Chloramine
A longer-lasting disinfectant made by combining chlorine with ammonia.
Holds disinfection further into the pipe network, but is regulated under the same residual-disinfectant cap as chlorine.
How Westborough Water District — South San Francisco, Ca, CA compares
5 of the 127 systems measuring Chloramine on The Water Map have it at or above the federal limit:
Nearby systems also reporting Chloramine:
People also ask
+Is there Chloramine in Westborough Water District — South San Francisco, Ca, CA tap water?
Yes — Westborough Water District — South San Francisco, Ca, CA's 2023 Consumer Confidence Report lists Chloramine at 3.69 mg/L. Westborough Water District — South San Francisco, Ca, CA's 2023 Chloramine level is between 80% and 100% of the federal limit (4 mg/L MCL) — measured but not in violation.
+What's the federal limit for Chloramine in drinking water?
The federal MCL for Chloramine 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 Chloramine?
A longer-lasting disinfectant made by combining chlorine with ammonia. Holds disinfection further into the pipe network, but is regulated under the same residual-disinfectant cap as chlorine.
+Which other U.S. cities have Chloramine over the federal limit?
5 of the 127 systems on The Water Map measuring Chloramine report it at or above the federal limit. Examples include Hialeah, FL, Shreveport, LA, Suffolk, VA.
+Where does this Chloramine measurement come from?
This page reproduces the Chloramine entry from the 2023 Consumer Confidence Report published by the Westborough Water District — South San Francisco, Ca, 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/westborough-water-district-south-san-francisco-ca/2023/source.