Physical & aggregate · 2024
Hardness in Simi Valley, CA tap water
Simi Valley, 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 |
|---|---|---|
Average Metropolitan Jensen Plant | 148 mg/L | None set |
Range Metropolitan Jensen Plant | 143–153 mg/L | None set |
Range Calleguas Lake Bard Water Filtration Plant | 160–165 mg/L | None set |
Average Tapo Canyon Water Treatment Plant | 195 mg/L | None set |
Average Calleguas Lake Bard Water Filtration Plant | 163 mg/L | None set |
Range Tapo Canyon Water Treatment Plant | 182–207 mg/L | None set |
Verbatim from Simi Valley, 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 Simi Valley, CA compares
4 of the 124 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 Simi Valley, CA tap water?
Yes — Simi Valley, CA's 2024 Consumer Confidence Report lists Hardness at 195 mg/L. Simi Valley, 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?
4 of the 124 systems on The Water Map measuring Hardness report it at or above the federal limit. Examples include Pomona, CA, Burbank, CA, San Diego, CA.
+Where does this Hardness measurement come from?
This page reproduces the Hardness entry from the 2024 Consumer Confidence Report published by the Simi Valley, 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/simi-valley/2024/source.