Metals · 2023

Arsenic in Los Angeles LADWP, CA tap water

Within the federal limit· 0.3× the limit

Los Angeles LADWP, CA's 2023 Arsenic measurement is below the federal limit.

The measurement

StatisticValue
Average
Los Angeles Aqueduct Filtration Plant
3.5 ug/L
Range
Los Angeles Aqueduct Filtration Plant
0–6.3 ug/L
Average
Northern Combined Wells
3.5 ug/L
Range
Northern Combined Wells
0–8.4 ug/L
Average
Southern Combined Wells
2.7 ug/L
Range
Southern Combined Wells
0–4.5 ug/L
Average
MWD Weymouth Plant
Not detected ug/L
Range
MWD Weymouth Plant
Not detected ug/L
Average
MWD Diemer Plant
Not detected ug/L
Range
MWD Diemer Plant
Not detected ug/L
Average
MWD Jensen Plant
Not detected ug/L
Range
MWD Jensen Plant
Not detected ug/L

Verbatim from Los Angeles LADWP, CA's 2023 Consumer Confidence Report — source document ↗

About Arsenic

A naturally occurring element that also enters water from industry and agriculture.

A known human carcinogen; long-term exposure is linked to skin, bladder, and lung cancer.

How Los Angeles LADWP, CA compares

4 of the 173 CA systems measuring Arsenic on The Water Map have it at or above the federal limit:

Nearby systems also reporting Arsenic:

People also ask

+Is there Arsenic in Los Angeles LADWP, CA tap water?

Yes — Los Angeles LADWP, CA's 2023 Consumer Confidence Report lists Arsenic at 3.5 ug/L. Los Angeles LADWP, CA's 2023 Arsenic measurement is below the federal limit.

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

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

+What is Arsenic?

A naturally occurring element that also enters water from industry and agriculture. A known human carcinogen; long-term exposure is linked to skin, bladder, and lung cancer.

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

4 of the 173 CA systems on The Water Map measuring Arsenic report it at or above the federal limit. Examples include Templeton Csd — Templeton, Ca, CA, San Miguel Community Services District — San Miguel, Ca, CA, Tulare, City of — Tulare, Ca, CA.

+Where does this Arsenic measurement come from?

This page reproduces the Arsenic entry from the 2023 Consumer Confidence Report published by the Los Angeles LADWP, 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/los-angeles-ladwp/2023/source.

Full report
All Los Angeles LADWP, CA water-quality data →
Every contaminant measured in the 2023 report.
Contaminant pillar
Arsenic across the U.S. →
Every public water system measuring Arsenic, ranked.