Metals · 2025
Thallium in Rancho Estates Mutual Water Co., CA tap water
Rancho Estates Mutual Water Co., CA's 2025 Consumer Confidence Report tested for Thallium and reported no detectable amount.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample Source water | Not detected UG/L | 2 UG/L MCL |
Verbatim from Rancho Estates Mutual Water Co., CA's 2025 Consumer Confidence Report — source document ↗
How Rancho Estates Mutual Water Co., CA compares
1 of the 188 systems measuring Thallium on The Water Map have it at or above the federal limit:
Nearby systems also reporting Thallium:
People also ask
+Is there Thallium in Rancho Estates Mutual Water Co., CA tap water?
Rancho Estates Mutual Water Co., CA's 2025 Consumer Confidence Report tested for Thallium and found no detectable amount.
+What's the federal limit for Thallium in drinking water?
The federal MCL for Thallium is 2 UG/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+Which other U.S. cities have Thallium over the federal limit?
1 of the 188 systems on The Water Map measuring Thallium report it at or above the federal limit. Examples include St George, UT.
+Where does this Thallium measurement come from?
This page reproduces the Thallium entry from the 2025 Consumer Confidence Report published by the Rancho Estates Mutual Water Co., 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/rancho-estates-mutual-water-co/2025/source.