Metals · 2024
Lithium in Pomona - City, Water Dept., CA tap water
Pomona - City, Water Dept., CA's 2024 Consumer Confidence Report shows Lithium at or above the federal limit (10 ug/L MCL). Measured value is 4.0× the threshold.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Range Pomona Groundwater | 5 ug/L | 10 ug/L MCL |
Reported level Miramar Groundwater Grand Well | Not detected ug/L | 10 ug/L MCL |
Reported level Miramar Groundwater Well #1 | Not detected ug/L | 10 ug/L MCL |
Reported level Miramar Groundwater Well #2 | Not detected ug/L | 10 ug/L MCL |
Reported level Weymouth Effluent | 32–40 ug/L | 10 ug/L MCL |
Verbatim from Pomona - City, Water Dept., CA's 2024 Consumer Confidence Report — source document ↗
About Lithium
A naturally occurring element found in some groundwater.
No enforceable federal limit; on the EPA contaminant candidate list for further study.
How Pomona - City, Water Dept., CA compares
5 of the 159 systems measuring Lithium on The Water Map have it at or above the federal limit:
Nearby systems also reporting Lithium:
People also ask
+Is there Lithium in Pomona - City, Water Dept., CA tap water?
Yes — Pomona - City, Water Dept., CA's 2024 Consumer Confidence Report lists Lithium at 32–40 ug/L. Pomona - City, Water Dept., CA's 2024 Consumer Confidence Report shows Lithium at or above the federal limit (10 ug/L MCL). Measured value is 4.0× the threshold.
+What's the federal limit for Lithium in drinking water?
The federal MCL for Lithium 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 Lithium?
A naturally occurring element found in some groundwater. No enforceable federal limit; on the EPA contaminant candidate list for further study.
+Which other U.S. cities have Lithium over the federal limit?
5 of the 159 systems on The Water Map measuring Lithium report it at or above the federal limit. Examples include Lubbock, TX, Chula Vista Otay, CA, El Cajon, CA.
+Where does this Lithium measurement come from?
This page reproduces the Lithium entry from the 2024 Consumer Confidence Report published by the Pomona - City, Water Dept., 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/pomona-city-water-dept/2024/source.