Physical & aggregate · 2024
Hardness in City of Thousand Oaks Water Department, CA tap water
City of Thousand Oaks Water Department, CA's 2024 report shows Hardness detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Reported level Calleguas LBWFP | 160–165 mg/L | None set |
Reported level MWD Jensen Plant | 143–153 mg/L | None set |
Verbatim from City of Thousand Oaks Water Department, CA's 2024 Consumer Confidence Report — source document ↗
About Hardness
A measure of dissolved calcium and magnesium minerals.
Not federally regulated for health; affects scaling, soap use, and taste.
How City of Thousand Oaks Water Department, CA compares
1 of the 210 systems measuring Hardness on The Water Map have it at or above the federal limit:
Nearby systems also reporting Hardness:
People also ask
+Is there Hardness in City of Thousand Oaks Water Department, CA tap water?
Yes — City of Thousand Oaks Water Department, CA's 2024 Consumer Confidence Report lists Hardness at 160–165 mg/L. City of Thousand Oaks Water Department, CA's 2024 report shows Hardness detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Hardness in drinking water?
The EPA has not set an enforceable federal limit for Hardness. Utilities still report any measured levels in their annual Consumer Confidence Report.
+What is Hardness?
A measure of dissolved calcium and magnesium minerals. Not federally regulated for health; affects scaling, soap use, and taste.
+Which other U.S. cities have Hardness over the federal limit?
1 of the 210 systems on The Water Map measuring Hardness report it at or above the federal limit. Examples include Vancouver, WA.
+Where does this Hardness measurement come from?
This page reproduces the Hardness entry from the 2024 Consumer Confidence Report published by the City of Thousand Oaks Water Department, 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/thousand-oaks-water-department/2024/source.