Other · 2024
Heptachlor in Ontario, CA tap water
Ontario, CA's 2024 Consumer Confidence Report tested for Heptachlor and reported no detectable amount.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample Source water | Not detected UG/L | 0.01 UG/L MCL |
Verbatim from Ontario, CA's 2024 Consumer Confidence Report — source document ↗
How Ontario, CA compares
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People also ask
+Is there Heptachlor in Ontario, CA tap water?
Ontario, CA's 2024 Consumer Confidence Report tested for Heptachlor and found no detectable amount.
+What's the federal limit for Heptachlor in drinking water?
The federal MCL for Heptachlor is 0.01 UG/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+Where does this Heptachlor measurement come from?
This page reproduces the Heptachlor entry from the 2024 Consumer Confidence Report published by the Ontario, 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/ontario/2024/source.