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City water profile

Rockland water quality

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

Median indexed hardness

81PPM

One indexed ZIP

Range 81.3–81.3 PPM

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

City summary

What the indexed records say

Rockland has 1 published ZIP profile across Ontonagon County. The indexed median is 81 PPM, compared with 283 PPM across Michigan.

Among the 374 Michigancities with an indexed median, Rockland ranks #351from 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. 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 hard1 ZIP
Hard0 ZIPs
Very hard0 ZIPs

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
49.3 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: May 16, 2016 to Sep 12, 2024.

ZIP directory

Water reports in Rockland

Open a ZIP for site-level provenance and measurements.

ZIP code

49960

Moderately Hard

81.3 PPM

Nearest site
49.3 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Rockland Township

PWSID MI0005740

Groundwater
System population served
350
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 RuleMI0005740Mar 1, 2024Resolved
ChlorineMI0005740Jan 1, 2024Resolved
Lead and Copper RuleMI0005740Oct 11, 2023Resolved
Consumer Confidence RuleMI0005740Jul 1, 2023Resolved
Consumer Confidence RuleMI0005740Jul 1, 2022Resolved

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 Rockland

Is the water hard?

The indexed city median is 81 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.