Disinfectants · 2025
Chlorine in Rochester, MN tap water
Rochester, MN's 2025 Chlorine measurement is below the federal limit of 4 mg/L (MCLG).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Range of Detected Test Results | 0.94–1.07 mg/L | 4 mg/L MCLG |
Maximum Average or Highest Single Test Result | 1.02 mg/L | 4 mg/L MCLG |
Verbatim from Rochester, MN's 2025 Consumer Confidence Report — source document ↗
About Chlorine
A disinfectant added to drinking water to kill bacteria and viruses.
Effective and necessary, but high residual levels can cause taste and odor issues; the EPA caps the residual disinfectant level.
People also ask
+Is there Chlorine in Rochester, MN tap water?
Yes — Rochester, MN's 2025 Consumer Confidence Report lists Chlorine at 0.94–1.07 mg/L. Rochester, MN's 2025 Chlorine measurement is below the federal limit of 4 mg/L (MCLG).
+What's the federal limit for Chlorine in drinking water?
The federal MCLG for Chlorine is 4 mg/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Chlorine?
A disinfectant added to drinking water to kill bacteria and viruses. Effective and necessary, but high residual levels can cause taste and odor issues; the EPA caps the residual disinfectant level.
+Where does this Chlorine measurement come from?
This page reproduces the Chlorine 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.