Disinfection byproducts · 2024
Chlorate in Sunnyvale, CA tap water
Sunnyvale, CA's 2024 report shows Chlorate detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Groundwater Well | Not detected mg/L | 800 mg/L NL |
Range Groundwater Well | Not detected mg/L | 800 mg/L NL |
Average Valley Water | Not detected mg/L | 800 mg/L NL |
Range Valley Water | Not detected mg/L | 800 mg/L NL |
Average SFPUC | 134 mg/L | 800 mg/L NL |
Range SFPUC | 24–597 mg/L | 800 mg/L NL |
Verbatim from Sunnyvale, CA's 2024 Consumer Confidence Report — source document ↗
About Chlorate
A byproduct that can form during disinfection, especially when hypochlorite solutions degrade.
Has no enforceable federal limit but is on the EPA contaminant candidate list; high levels can affect the thyroid.
How Sunnyvale, CA compares
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People also ask
+Is there Chlorate in Sunnyvale, CA tap water?
Yes — Sunnyvale, CA's 2024 Consumer Confidence Report lists Chlorate at 134 mg/L. Sunnyvale, CA's 2024 report shows Chlorate detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Chlorate in drinking water?
The federal NL for Chlorate is 800 mg/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Chlorate?
A byproduct that can form during disinfection, especially when hypochlorite solutions degrade. Has no enforceable federal limit but is on the EPA contaminant candidate list; high levels can affect the thyroid.
+Where does this Chlorate measurement come from?
This page reproduces the Chlorate entry from the 2024 Consumer Confidence Report published by the Sunnyvale, 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/sunnyvale/2024/source.