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City water profile

Sand Lake water quality

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

Median indexed hardness

210PPM

3 indexed ZIPs

Range 210–408.5 PPM

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

City summary

What the indexed records say

Sand Lake has 3 published ZIP profiles across Iosco County and Kent County. The indexed median is 210 PPM, compared with 283 PPM across Michigan.

Among the 374 Michigancities with an indexed median, Sand Lake ranks #275from highest to lowest. Across all 512 state ZIP profiles, available estimates run from 41.3to 459.5 PPM.

The 210–408.5 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 hard3 ZIPs

3 of 3 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
67.1 miles
Profiles with evidence
3/3

Confidence labels

High: 0Moderate: 0Low: 3

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

ZIP directory

Water reports in Sand Lake

Open a ZIP for site-level provenance and measurements.

ZIP code

48748

Very Hard

210 PPM

Nearest site
67.1 mi
Confidence
Low

View full ZIP evidence →

ZIP code

48763

Very Hard

210 PPM

Nearest site
68.2 mi
Confidence
Low

View full ZIP evidence →

ZIP code

49343

Very Hard

408.5 PPM

Nearest site
49.9 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Sand Lake

PWSID MI0005907

Groundwater
System population served
360
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 RuleMI0005907Jul 1, 2024Resolved
Revised Total Coliform RuleMI0005907Oct 1, 2022Resolved
Consumer Confidence RuleMI0005907Jul 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 Sand Lake

Is the water hard?

The indexed city median is 210 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.