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City water profile

Harlan water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Harlan, Indiana.

Median indexed hardness

280PPM

2 indexed ZIPs

Range 234–325 PPM

State comparison
33 PPM below
State hardness rank
#299 of 386
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Harlan has 2 published ZIP profiles across Allen County. The indexed median is 280 PPM, compared with 313 PPM across Indiana.

Among the 386 Indianacities with an indexed median, Harlan ranks #299from highest to lowest. Across all 472 state ZIP profiles, available estimates run from 132to 371 PPM.

The 234–325 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
58.2 miles
Profiles with evidence
2/2

Confidence labels

High: 0Moderate: 0Low: 2

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

ZIP directory

Water reports in Harlan

Open a ZIP for site-level provenance and measurements.

ZIP code

46741

Very Hard

325 PPM

Nearest site
58.2 mi
Confidence
Low

View full ZIP evidence →

ZIP code

46743

Very Hard

234 PPM

Nearest site
53.3 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Maysville Region. Water & Sewer District

PWSID IN5202037

Surface water
System population served
1,634
Last reported
Jun 30, 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
Lead and Copper RuleIN5202037Aug 1, 2024Resolved
Lead and Copper RuleIN5202037Aug 1, 2024Resolved
Revised Total Coliform RuleIN5202037Aug 1, 2021Resolved
Revised Total Coliform RuleIN5202037Jul 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 Harlan

Is the water hard?

The indexed city median is 280 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.