Metals · 2023
Lithium in San Antonio, TX tap water
San Antonio, TX's 2023 Consumer Confidence Report shows Lithium at or above the federal limit (9 ug/L MCL). Measured value is 1.4× the threshold.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Reported level Health-Based Reference Concentration | 10 ug/L | 9 ug/L MCL |
Average System-wide | 12.82 ug/L | 9 ug/L MCL |
Reported level Health Information Summary | 5 ug/L | 9 ug/L MCL |
Range System-wide | 9–25.5 ug/L | 9 ug/L MCL |
Verbatim from San Antonio, TX's 2023 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 San Antonio, TX compares
5 of the 125 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 San Antonio, TX tap water?
Yes — San Antonio, TX's 2023 Consumer Confidence Report lists Lithium at 12.82 ug/L. San Antonio, TX's 2023 Consumer Confidence Report shows Lithium at or above the federal limit (9 ug/L MCL). Measured value is 1.4× the threshold.
+What's the federal limit for Lithium in drinking water?
The federal MCL for Lithium is 9 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 125 systems on The Water Map measuring Lithium report it at or above the federal limit. Examples include New Braunfels, TX, Chandler, AZ, Tempe, AZ.
+Where does this Lithium measurement come from?
This page reproduces the Lithium entry from the 2023 Consumer Confidence Report published by the San Antonio, TX 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/tx/san-antonio/2023/source.