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City water profile

Rochester water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Rochester, Wisconsin.

Median indexed hardness

414PPM

2 indexed ZIPs

Range 414–414 PPM

State comparison
126 PPM above
State hardness rank
#29 of 479
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Rochester has 2 published ZIP profiles across Racine County. The indexed median is 414 PPM, compared with 288 PPM across Wisconsin.

Among the 479 Wisconsincities with an indexed median, Rochester ranks #29from highest to lowest. Across all 556 state ZIP profiles, available estimates run from 41.3to 467 PPM.

The 414–414 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard2 ZIPs

2 of 2 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
8.5 miles
Profiles with evidence
2/2

Confidence labels

High: 0Moderate: 2Low: 0

Observation window: May 30, 2017 to Aug 5, 2024.

ZIP directory

Water reports in Rochester

Open a ZIP for site-level provenance and measurements.

ZIP code

53105

Very Hard

414 PPM

Nearest site
8.5 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

53167

Very Hard

414 PPM

Nearest site
7.3 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

River Springs Apartments Llc

PWSID WI2520193

Groundwater
System population served
38
Last reported
May 29, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Compliance history

What EPA records show

No active health-based violation appears among the associated systems in the represented EPA reporting quarter. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
Revised Total Coliform RuleWI2520193Oct 1, 2025Resolved
Revised Total Coliform RuleWI2520193Sep 1, 2025Resolved
LEAD AND COPPER RULE REVISIONSWI2520193Oct 17, 2024Resolved
LEAD AND COPPER RULE REVISIONSWI2520193Oct 17, 2024Resolved · health-based
Public NoticeWI2520193Oct 17, 2024Unaddressed
Public NoticeWI2520193Oct 17, 2024Unaddressed
Consumer Confidence RuleWI2520193Jul 1, 2024Resolved
Consumer Confidence RuleWI2520193Jul 1, 2024Resolved
Revised Total Coliform RuleWI2520193Jun 1, 2024Resolved
Revised Total Coliform RuleWI2520193May 1, 2024Resolved

Practical next steps

Move from index to evidence

  1. 1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
  2. 2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
  3. 3. Test the tap when needed. Confirm health concerns or treatment sizing with the right method.

Questions people ask

About water in Rochester

Is the water hard?

The indexed city median is 414 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.

Is the tap water safe?

Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.

Do I need treatment?

Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.