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City water profile

Greencastle water quality

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

Median indexed hardness

273PPM

One indexed ZIP

Range 272.5–272.5 PPM

State comparison
40 PPM below
State hardness rank
#309 of 386
Matched utilities
5
Active health records
0

City summary

What the indexed records say

Greencastle has 1 published ZIP profile across Putnam County. The indexed median is 273 PPM, compared with 313 PPM across Indiana.

Among the 386 Indianacities with an indexed median, Greencastle ranks #309from highest to lowest. Across all 472 state ZIP profiles, available estimates run from 132to 371 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 hard0 ZIPs
Hard0 ZIPs
Very hard1 ZIP

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
32 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Jan 5, 2016 to May 28, 2026.

ZIP directory

Water reports in Greencastle

Open a ZIP for site-level provenance and measurements.

ZIP code

46135

Very Hard

272.5 PPM

Nearest site
32 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Greencastle Department Of Water

PWSID IN5267004

Groundwater influenced by surface water
System population served
12,699
Last reported
Jun 30, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Putnamville Correctional Facility

PWSID IN5267005

Groundwater
System population served
2,505
Last reported
Jun 30, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

South 43 Water Association, Inc.

PWSID IN5267009

Groundwater influenced by surface water
System population served
1,431
Last reported
Jun 30, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Town Of Fillmore Utilities

PWSID IN5267012

Groundwater
System population served
510
Last reported
Jun 30, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Big Walnut Water Company

PWSID IN5267002

Groundwater
System population served
500
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 RULE REVISIONSIN5267002Jul 2, 2025Unaddressed
Revised Total Coliform RuleIN5267005Sep 1, 2024Resolved
Lead and Copper RuleIN5267005Oct 1, 2023Resolved
Consumer Confidence RuleIN5267004Jul 1, 2023Resolved
TTHMIN5267009Jan 1, 2023Archived
Total Haloacetic Acids (HAA5)IN5267009Jan 1, 2023Archived
Revised Total Coliform RuleIN5267005May 1, 2022Resolved
TTHMIN5267002Jan 1, 2022Resolved
Total Haloacetic Acids (HAA5)IN5267002Jan 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 Greencastle

Is the water hard?

The indexed city median is 273 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.