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City water profile

Sheboygan water quality

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

Median indexed hardness

245PPM

2 indexed ZIPs

Range 236–254 PPM

State comparison
43 PPM below
State hardness rank
#373 of 479
Matched utilities
2
Active health records
0

City summary

What the indexed records say

Sheboygan has 2 published ZIP profiles across Sheboygan County. The indexed median is 245 PPM, compared with 288 PPM across Wisconsin.

Among the 479 Wisconsincities with an indexed median, Sheboygan ranks #373from highest to lowest. Across all 556 state ZIP profiles, available estimates run from 41.3to 467 PPM.

The 236–254 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
27.4 miles
Profiles with evidence
2/2

Confidence labels

High: 0Moderate: 1Low: 1

Observation window: Feb 9, 2016 to Jun 10, 2026.

ZIP directory

Water reports in Sheboygan

Open a ZIP for site-level provenance and measurements.

ZIP code

53081

Very Hard

254 PPM

Nearest site
27.4 mi
Confidence
Low

View full ZIP evidence →

ZIP code

53083

Very Hard

236 PPM

Nearest site
20.2 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Sheboygan Water Utilities

PWSID WI4600354

Surface water
System population served
49,931
Last reported
May 29, 2026

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

Sheboygan Tn Waterworks

PWSID WI4600403

Groundwater
System population served
4,596
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
Total Haloacetic Acids (HAA5)WI4600354Jan 1, 2024Resolved
TTHMWI4600354Apr 1, 2021Resolved

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 Sheboygan

Is the water hard?

The indexed city median is 245 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.