Disinfection byproducts · 2023
NDMA in Helix Water District — La Mesa, Ca, CA tap water
Helix Water District — La Mesa, Ca, CA's 2023 report shows NDMA detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Purchased Water | Not detected ng/L | 10 ng/L NL |
Minimum Helix Plant | Not detected ng/L | 10 ng/L NL |
Minimum Purchased Water | Not detected ng/L | 10 ng/L NL |
Maximum Helix Plant | Not detected ng/L | 10 ng/L NL |
Average Helix Plant | Not detected ng/L | 10 ng/L NL |
Maximum Purchased Water | 2.5 ng/L | 10 ng/L NL |
Verbatim from Helix Water District — La Mesa, Ca, CA's 2023 Consumer Confidence Report — source document ↗
How Helix Water District — La Mesa, Ca, CA compares
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People also ask
+Is there NDMA in Helix Water District — La Mesa, Ca, CA tap water?
Yes — Helix Water District — La Mesa, Ca, CA's 2023 Consumer Confidence Report lists NDMA at Not detected ng/L. Helix Water District — La Mesa, Ca, CA's 2023 report shows NDMA detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for NDMA in drinking water?
The federal NL for NDMA is 10 ng/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+Where does this NDMA measurement come from?
This page reproduces the NDMA 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.