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Water Quality Report

Rochester, MN

Olmsted County · 1,219 residents · 8 water systems

5

Contaminants detected

0

PFAS compounds

—

Hardness (mg/L)

1

Above legal limits

11

Above health guidelines

Rochester drinking water comes from groundwater wells. Based on the most recent monitoring data, 5 contaminants have been detected in the water supply, including Lead, Nitrate, Radium, Total Trihalomethanes, and 1 others.

Contaminants detected in Rochester water

Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.

Lead0.005 / 0.015 mg/L
33% of EPA limit
Nitrate0.025 / 10 mg/L
0% of EPA limit
Radium1.3 / 5 pCi/L
26% of EPA limit
Total Trihalomethanes45.9 / 80 ug/L
57% of EPA limit
Haloacetic Acids (HAA5)4.9 / 60 ug/L
8% of EPA limit
Microplastics (not routinely tested)

Water systems serving Rochester

Chester Heights

300 servedGroundwater5 contaminants1 above guideline
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Zumbro Ridge Estates

270 servedGroundwater8 contaminants1 above guideline
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Hallmark Terrace Mobile Home Park

170 servedGroundwater5 contaminants
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Sandy Slopes Community

158 servedGroundwater6 contaminants1 above guideline
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Meadowbrook Addition

125 servedGroundwater6 contaminants3 above guidelines
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Briarwood Subdivision

90 servedGroundwater8 contaminants1 above legal limit2 above guidelines
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Country Home Trailer Park

56 servedGroundwater11 contaminants2 above guidelines
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Sunrise Mobile Home Park

50 servedGroundwater5 contaminants1 above guideline
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Other cities in Olmsted County

Water quality reports for nearby Minnesota communities.

ByronChicagoDoverEyotaMinneapolisOronocoStewartville

Frequently asked questions

Is Rochester, MN tap water safe to drink?
Rochester tap water has 1 contaminant currently measured above EPA legal standards (Maximum Contaminant Levels), and 11 above independent health guidelines. 5 contaminants have been detected in the water supply, including Lead, Nitrate, Radium, Total Trihalomethanes, Haloacetic Acids (HAA5). View the detailed report for each water system to see specific levels, how they compare to both legal limits and health guidelines, and what actions to take.
What contaminants are in Rochester water?
Monitoring has detected 5 contaminants in Rochester's water supply: Lead, Nitrate, Radium, Total Trihalomethanes, Haloacetic Acids (HAA5). 1 of these are above EPA legal limits. 11 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Where does Rochester get its drinking water?
Rochester's drinking water comes from groundwater wells that draw from underground aquifers. The water is treated and tested according to Minnesota Department of Health and EPA requirements before distribution. Rochester is served by 8 water systems, the largest being Chester Heights (serving 300 people).

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