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City water profile

Eau Claire water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Eau Claire, Michigan.

Median indexed hardness

306PPM

One indexed ZIP

Range 306–306 PPM

State comparison
23 PPM above
State hardness rank
#172 of 374
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Eau Claire has 1 published ZIP profile across Berrien County. The indexed median is 306 PPM, compared with 283 PPM across Michigan.

Among the 374 Michigancities with an indexed median, Eau Claire ranks #172from highest to lowest. Across all 512 state ZIP profiles, available estimates run from 41.3to 459.5 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.

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
10.4 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: Aug 3, 2020 to May 13, 2026.

ZIP directory

Water reports in Eau Claire

Open a ZIP for site-level provenance and measurements.

ZIP code

49111

Very Hard

306 PPM

Nearest site
10.4 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Eau Claire

PWSID MI0002030

Groundwater
System population served
610
Last reported
Jun 23, 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 RuleMI0002030Nov 11, 2023Resolved
Consumer Confidence RuleMI0002030Jul 1, 2023Resolved
Lead and Copper RuleMI0002030Jul 1, 2021Resolved
Lead and Copper RuleMI0002030Jan 11, 2021Resolved
Lead and Copper RuleMI0002030Jan 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 Eau Claire

Is the water hard?

The indexed city median is 306 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.