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City water profile

Kendall water quality

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

Median indexed hardness

291PPM

One indexed ZIP

Range 291–291 PPM

State comparison
3 PPM above
State hardness rank
#203 of 479
Matched utilities
1
Active health records
1

City summary

What the indexed records say

Kendall has 1 published ZIP profile across Monroe County. The indexed median is 291 PPM, compared with 288 PPM across Wisconsin.

Among the 479 Wisconsincities with an indexed median, Kendall ranks #203from 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
39.5 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Aug 2, 2016 to Aug 20, 2024.

ZIP directory

Water reports in Kendall

Open a ZIP for site-level provenance and measurements.

ZIP code

54638

Very Hard

291 PPM

Nearest site
39.5 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Kendall Waterworks

PWSID WI6420295

Groundwater
System population served
458
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

1 unique active health-based record appears among associated systems. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
Lead and Copper RuleWI6420295Oct 1, 2025Unaddressed
Lead and Copper RuleWI6420295Dec 11, 2024Resolved · health-based
Public NoticeWI6420295Dec 11, 2024Resolved
LEAD AND COPPER RULE REVISIONSWI6420295Oct 17, 2024Unaddressed · health-based
Public NoticeWI6420295Oct 17, 2024Unaddressed
NitrateWI6420295Oct 1, 2024Resolved
NitrateWI6420295Jul 1, 2024Resolved
NitrateWI6420295Jan 1, 2024Resolved
Lead and Copper RuleWI6420295Oct 1, 2023Resolved · health-based
Lead and Copper RuleWI6420295Jul 1, 2023Resolved

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 Kendall

Is the water hard?

The indexed city median is 291 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.