Metals · 2023
Arsenic in Los Angeles LADWP, CA tap water
Los Angeles LADWP, CA's 2023 Arsenic measurement is below the federal limit of 10 ug/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Range Los Angeles Aqueduct Filtration Plant | 0–6.3 ug/L | 10 ug/L MCL |
Average MWD Jensen Plant | Not detected ug/L | 10 ug/L MCL |
Average MWD Diemer Plant | Not detected ug/L | 10 ug/L MCL |
Average Northern Combined Wells | 3.5 ug/L | 10 ug/L MCL |
Average Southern Combined Wells | 2.7 ug/L | 10 ug/L MCL |
Range MWD Diemer Plant | Not detected ug/L | 10 ug/L MCL |
Range MWD Jensen Plant | Not detected ug/L | 10 ug/L MCL |
Average MWD Weymouth Plant | Not detected ug/L | 10 ug/L MCL |
Range Northern Combined Wells | 0–8.4 ug/L | 10 ug/L MCL |
Range MWD Weymouth Plant | Not detected ug/L | 10 ug/L MCL |
Range Southern Combined Wells | 0–4.5 ug/L | 10 ug/L MCL |
Average Los Angeles Aqueduct Filtration Plant | 3.5 ug/L | 10 ug/L MCL |
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 169 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 of 10 ug/L (MCL).
+What's the federal limit for Arsenic in drinking water?
The federal MCL for Arsenic is 10 ug/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+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 169 systems on The Water Map measuring Arsenic report it at or above the federal limit. Examples include Albuquerque, NM, Beaches Water, MD, Beaver Run Mhp, MD.
+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.