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City water profile

Fitchburg water quality

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

Median indexed hardness

391PPM

2 indexed ZIPs

Range 388–394 PPM

State comparison
103 PPM above
State hardness rank
#72 of 479
Matched utilities
4
Active health records
0

City summary

What the indexed records say

Fitchburg has 2 published ZIP profiles across Dane County. The indexed median is 391 PPM, compared with 288 PPM across Wisconsin.

Among the 479 Wisconsincities with an indexed median, Fitchburg ranks #72from highest to lowest. Across all 556 state ZIP profiles, available estimates run from 41.3to 467 PPM.

The 388–394 PPM range shows how much the available ZIP estimates vary within the city label. 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 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
38.7 miles
Profiles with evidence
2/2

Confidence labels

High: 0Moderate: 0Low: 2

Observation window: Aug 3, 2016 to Aug 20, 2024.

ZIP directory

Water reports in Fitchburg

Open a ZIP for site-level provenance and measurements.

ZIP code

53575

Very Hard

394 PPM

Nearest site
38.7 mi
Confidence
Low

View full ZIP evidence →

ZIP code

53711

Very Hard

388 PPM

Nearest site
35.3 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Fitchburg Utility Dist 1

PWSID WI1130231

Groundwater
System population served
24,500
Last reported
May 29, 2026

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

Fitchburg Utility Dist 1 South

PWSID WI1131004

Groundwater
System population served
350
Last reported
May 29, 2026

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

Danville Drive Service Area

PWSID WI1134098

Groundwater
System population served
150
Last reported
May 29, 2026

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

Rimrock Road Neighborhood

PWSID WI1132759

Groundwater
System population served
135
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 NoticeWI1134098Oct 17, 2024Unaddressed
Public NoticeWI1132759Oct 17, 2024Unaddressed
Revised Total Coliform RuleWI1130231Oct 1, 2021Resolved
Public NoticeWI1132759Oct 23, 2012Unaddressed
Public NoticeWI1132759Jan 1, 2008Unaddressed
Public NoticeWI1132759Jan 1, 2004Unaddressed

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 Fitchburg

Is the water hard?

The indexed city median is 391 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.