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City water profile

Prairie Du Chien water quality

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

Median indexed hardness

250PPM

One indexed ZIP

Range 250–250 PPM

State comparison
38 PPM below
State hardness rank
#368 of 479
Matched utilities
3
Active health records
0

City summary

What the indexed records say

Prairie Du Chien has 1 published ZIP profile across Crawford County. The indexed median is 250 PPM, compared with 288 PPM across Wisconsin.

Among the 479 Wisconsincities with an indexed median, Prairie Du Chien ranks #368from highest to lowest. Across all 556 state ZIP profiles, available estimates run from 41.3to 467 PPM.

Because only one ZIP is represented, the city median and range are the same local estimate. It should not be read as multiple independent samples across the community. At least one estimate is marked low confidence, so observation distance and date deserve extra attention.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard1 ZIP

1 of 1 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
26.3 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Aug 3, 2016 to May 15, 2019.

ZIP directory

Water reports in Prairie Du Chien

Open a ZIP for site-level provenance and measurements.

ZIP code

53821

Very Hard

250 PPM

Nearest site
26.3 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Prairie Du Chien Waterworks

PWSID WI6120250

Groundwater
System population served
6,005
Last reported
May 29, 2026

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

Bridgeport San Dist No 1

PWSID WI6120331

Groundwater
System population served
300
Last reported
May 29, 2026

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

Homesteader Llc The

PWSID WI6120109

Groundwater
System population served
200
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
Public NoticeWI6120331Oct 17, 2024Unaddressed
LEAD AND COPPER RULE REVISIONSWI6120331Oct 17, 2024Resolved · health-based
Lead and Copper RuleWI6120331Jan 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 Prairie Du Chien

Is the water hard?

The indexed city median is 250 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.