Metals · 2025
Lithium in Rochester, MN tap water
Rochester, MN's 2025 Consumer Confidence Report shows Lithium at or above the federal limit (10 MCL). Measured value is 1.1× the threshold.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Range of Detected Test Results | 0–10.8 | 10 MCL |
Maximum Average Result or Highest Single Test Result | 10.8 | 10 MCL |
Verbatim from Rochester, MN's 2025 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 Rochester, MN 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 Rochester, MN tap water?
Yes — Rochester, MN's 2025 Consumer Confidence Report lists Lithium at 0–10.8. Rochester, MN's 2025 Consumer Confidence Report shows Lithium at or above the federal limit (10 MCL). Measured value is 1.1× the threshold.
+What's the federal limit for Lithium in drinking water?
The federal MCL for Lithium is 10 . 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 2025 Consumer Confidence Report published by the Rochester, MN 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/mn/rochester/2025/source.