Metals · 2025
Copper in Rochester, MN tap water
Rochester, MN's 2025 Copper measurement is below the federal limit of 1.3 % (MCLG).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
90th percentile At the tap | 0.76 % | 1.3 % MCLG |
Reported level Number of Homes with High Levels | 0 | 1.3 MCLG |
Range of Detected Test Results | 0.03–1.01 | 1.3 MCLG |
Verbatim from Rochester, MN's 2025 Consumer Confidence Report — source document ↗
About Copper
A metal that enters water from corroding household plumbing.
Short-term exposure causes stomach distress; long-term exposure can damage the liver and kidneys.
How Rochester, MN compares
5 of the 392 systems measuring Copper on The Water Map have it at or above the federal limit:
Nearby systems also reporting Copper:
People also ask
+Is there Copper in Rochester, MN tap water?
Yes — Rochester, MN's 2025 Consumer Confidence Report lists Copper at 0.76 %. Rochester, MN's 2025 Copper measurement is below the federal limit of 1.3 % (MCLG).
+What's the federal limit for Copper in drinking water?
The federal MCLG for Copper is 1.3 %. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Copper?
A metal that enters water from corroding household plumbing. Short-term exposure causes stomach distress; long-term exposure can damage the liver and kidneys.
+Which other U.S. cities have Copper over the federal limit?
5 of the 392 systems on The Water Map measuring Copper report it at or above the federal limit. Examples include Town of Denton, MD, Oxnard, CA, High Point, NC.
+Where does this Copper measurement come from?
This page reproduces the Copper 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.