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City water profile

Southfield water quality

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

Median indexed hardness

256PPM

4 indexed ZIPs

Range 255.5–255.5 PPM

State comparison
27 PPM below
State hardness rank
#224 of 374
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Southfield has 4 published ZIP profiles across Oakland County. The indexed median is 256 PPM, compared with 283 PPM across Michigan.

Among the 374 Michigancities with an indexed median, Southfield ranks #224from highest to lowest. Across all 512 state ZIP profiles, available estimates run from 41.3to 459.5 PPM.

The 255.5–255.5 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 hard4 ZIPs

4 of 4 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
15.7 miles
Profiles with evidence
4/4

Confidence labels

High: 0Moderate: 0Low: 4

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

ZIP directory

Water reports in Southfield

Open a ZIP for site-level provenance and measurements.

ZIP code

48033

Very Hard

255.5 PPM

Nearest site
17.3 mi
Confidence
Low

View full ZIP evidence →

ZIP code

48034

Very Hard

255.5 PPM

Nearest site
15.7 mi
Confidence
Low

View full ZIP evidence →

ZIP code

48075

Very Hard

255.5 PPM

Nearest site
14.8 mi
Confidence
Low

View full ZIP evidence →

ZIP code

48076

Very Hard

255.5 PPM

Nearest site
13.2 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Southfield

PWSID MI0006160

Surface water
System population served
71,739
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
Consumer Confidence RuleMI0006160Jul 1, 2024Resolved
Consumer Confidence RuleMI0006160Jul 1, 2024Resolved
Consumer Confidence RuleMI0006160Jul 1, 2022Resolved
Consumer Confidence RuleMI0006160Jul 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 Southfield

Is the water hard?

The indexed city median is 256 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.