Metals · 2024

Magnesium in San Lorenzo, CA tap water

Detected — no federal limit

San Lorenzo, CA's 2024 report shows Magnesium detected, but the EPA has not set an enforceable federal limit for it.

The measurement

StatisticValue
Reported level
USL
13–14 mg/L
Reported level
Walnut Creek
1 mg/L
Reported level
Lafayette
1 mg/L
Reported level
Sobrante
5–8 mg/L
Reported level
Orinda
1–2 mg/L

Verbatim from San Lorenzo, CA's 2024 Consumer Confidence Report — source document ↗

About Magnesium

A naturally occurring mineral that contributes to water hardness.

Not federally regulated for health; affects scaling and taste.

How San Lorenzo, CA compares

3 of the 111 systems measuring Magnesium on The Water Map have it at or above the federal limit:

Nearby systems also reporting Magnesium:

People also ask

+Is there Magnesium in San Lorenzo, CA tap water?

Yes — San Lorenzo, CA's 2024 Consumer Confidence Report lists Magnesium at 13–14 mg/L. San Lorenzo, CA's 2024 report shows Magnesium detected, but the EPA has not set an enforceable federal limit for it.

+What's the federal limit for Magnesium in drinking water?

The EPA has not set an enforceable federal limit for Magnesium. Utilities still report any measured levels in their annual Consumer Confidence Report.

+What is Magnesium?

A naturally occurring mineral that contributes to water hardness. Not federally regulated for health; affects scaling and taste.

+Which other U.S. cities have Magnesium over the federal limit?

3 of the 111 systems on The Water Map measuring Magnesium report it at or above the federal limit. Examples include Pomona, CA, Burbank, CA, Vancouver, WA.

+Where does this Magnesium measurement come from?

This page reproduces the Magnesium entry from the 2024 Consumer Confidence Report published by the San Lorenzo, 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/san-lorenzo/2024/source.

Full report
All San Lorenzo, CA water-quality data →
Every contaminant measured in the 2024 report.
Contaminant pillar
Magnesium across the U.S. →
Every public water system measuring Magnesium, ranked.