Disinfection byproducts · 2023
Chlorate in Helix Water District — La Mesa, Ca, CA tap water
Helix Water District — La Mesa, Ca, CA's 2023 report shows Chlorate detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Maximum Purchased Water | 380 ug/L | 800 ug/L NL |
Minimum Purchased Water | 80 ug/L | 800 ug/L NL |
Average Purchased Water | 186 ug/L | 800 ug/L NL |
Average Purchased Water | 186 ug/L | 800 ug/L NL |
Maximum Purchased Water | 380 ug/L | 800 ug/L NL |
Minimum Purchased Water | 80 ug/L | 800 ug/L NL |
Verbatim from Helix Water District — La Mesa, Ca, CA's 2023 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 Helix Water District — La Mesa, Ca, CA compares
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People also ask
+Is there Chlorate in Helix Water District — La Mesa, Ca, CA tap water?
Yes — Helix Water District — La Mesa, Ca, CA's 2023 Consumer Confidence Report lists Chlorate at 186 ug/L. Helix Water District — La Mesa, Ca, CA's 2023 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 ug/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 2023 Consumer Confidence Report published by the Helix Water District — La Mesa, 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/helix-water-district-la-mesa-ca/2023/source.