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City water profile

Dearborn Heights water quality

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

Median indexed hardness

240PPM

2 indexed ZIPs

Range 240–240 PPM

State comparison
43 PPM below
State hardness rank
#242 of 374
Matched utilities
1
Active health records
1

City summary

What the indexed records say

Dearborn Heights has 2 published ZIP profiles across Wayne County. The indexed median is 240 PPM, compared with 283 PPM across Michigan.

Among the 374 Michigancities with an indexed median, Dearborn Heights ranks #242from highest to lowest. Across all 512 state ZIP profiles, available estimates run from 41.3to 459.5 PPM.

The 240–240 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
26.3 miles
Profiles with evidence
2/2

Confidence labels

High: 0Moderate: 1Low: 1

Observation window: Jan 7, 2016 to Jun 9, 2026.

ZIP directory

Water reports in Dearborn Heights

Open a ZIP for site-level provenance and measurements.

ZIP code

48125

Very Hard

240 PPM

Nearest site
26.3 mi
Confidence
Low

View full ZIP evidence →

ZIP code

48127

Very Hard

240 PPM

Nearest site
23.3 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Dearborn Heights

PWSID MI0001740

Surface water
System population served
57,774
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

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

RecordSystemPeriodStatus
Public NoticeMI0001740Jan 9, 2025Unaddressed
LEAD AND COPPER RULE REVISIONSMI0001740Oct 17, 2024Unaddressed · health-based
LEAD AND COPPER RULE REVISIONSMI0001740Oct 17, 2024Unaddressed
Lead and Copper RuleMI0001740Oct 11, 2024Resolved
Total Haloacetic Acids (HAA5)MI0001740Oct 1, 2024Resolved
TTHMMI0001740Oct 1, 2024Resolved
Consumer Confidence RuleMI0001740Jul 1, 2024Resolved
Consumer Confidence RuleMI0001740Jul 1, 2023Resolved
Total Haloacetic Acids (HAA5)MI0001740Jul 1, 2023Resolved
TTHMMI0001740Jul 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 Dearborn Heights

Is the water hard?

The indexed city median is 240 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.