Metals · 2024

Magnesium in El Cajon, CA tap water

Detected — no federal limit

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

The measurement

StatisticValue
Minimum
Purchased Water
1.2 mg/L
Maximum
Helix Plant
24 mg/L
Minimum
Helix Plant
19 mg/L
Average
Purchased Water
12 mg/L
Average
Helix Plant
21 mg/L
Maximum
Purchased Water
23 mg/L

Verbatim from El Cajon, 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 El Cajon, 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 El Cajon, CA tap water?

Yes — El Cajon, CA's 2024 Consumer Confidence Report lists Magnesium at 21 mg/L. El Cajon, 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 El Cajon, 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/el-cajon/2024/source.

Full report
All El Cajon, 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.