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City water profile

Kentwood water quality

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

Median indexed hardness

388PPM

2 indexed ZIPs

Range 385–390 PPM

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

City summary

What the indexed records say

Kentwood has 2 published ZIP profiles across Kent County. The indexed median is 388 PPM, compared with 283 PPM across Michigan.

Among the 374 Michigancities with an indexed median, Kentwood ranks #67from highest to lowest. Across all 512 state ZIP profiles, available estimates run from 41.3to 459.5 PPM.

The 385–390 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
41.8 miles
Profiles with evidence
2/2

Confidence labels

High: 0Moderate: 0Low: 2

Observation window: Jun 28, 2016 to Oct 11, 2023.

ZIP directory

Water reports in Kentwood

Open a ZIP for site-level provenance and measurements.

ZIP code

49508

Very Hard

390 PPM

Nearest site
41.3 mi
Confidence
Low

View full ZIP evidence →

ZIP code

49512

Very Hard

385 PPM

Nearest site
41.8 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Kentwood

PWSID MI0003620

Surface water
System population served
36,072
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 RuleMI0003620Feb 11, 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 Kentwood

Is the water hard?

The indexed city median is 388 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.