How hard is the water in Greencastle, IN?

Utility-reported hardness is unavailable in this index. Regional environmental samples cannot establish tap-water hardness. Ask your provider or test your tap.

Local water dashboard

Official source aggregation

Water quality in Greencastle, IN 46135

Q: Is tap water safe in Greencastle?

EPA SDWIS shows no active health-based violation in this profile's reporting window. That is not the same as proving every contaminant is absent, and federal data can lag state and utility records.

Regional hardness evidence, possible serving systems, EPA compliance history, and the measurements that are—and are not—available for Putnam County.

Historical measurement record needs context

Largest possible serving system: Greencastle Department Of Water
Source water: Groundwater influenced by surface water + Groundwater
County: Putnam County
Profile updated: Jun 30, 2026

Your tap water

What does the utility report?

Match the utility name to your water bill. These results describe the utility’s water, not a test at your home. A ZIP can include several water systems.

Utility hardness unavailable in this index

Nearby river or groundwater samples cannot tell us the hardness coming out of your tap. Ask your water provider for total hardness as CaCO₃, or test it at home.

Find an official utility report →

Convert a hardness result →Test your tap →

At a glance

What the current records say

EPA quarter 2026Q2

Utility-reported hardness

Unavailable

Ask your provider or test your tap

All possible systems

No active flag

0 active health-based records

Measurements by utility

Choose your provider

Each result belongs to a specific system.

Utility match

5 systems

Serves 12,699 people system-wide

Match the name on your water bill

Your utility’s measurements and compliance records

These are possible serving systems. A record for one system does not apply to every home in this ZIP. Confirm your provider before interpreting a measurement or notice. Federal records can lag current utility notices.

EPA snapshot: 2026Q2. Historical window begins Jan 1, 2021.

Greencastle Department Of Water

IN5267004 · Groundwater influenced by surface water · 12,699 people served system-wide

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

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0 mg/L
Action level: 0.015 mg/L

0% of the listed benchmark

Monitoring period: Jan 1, 2021 to Dec 31, 2023

Violation history (1)

Imported violation history for Greencastle Department Of Water
Rule	Status	Period
Consumer Confidence Rule	Resolved	Jul 1, 2023 to Aug 10, 2023

Putnamville Correctional Facility

IN5267005 · Groundwater · 2,505 people served system-wide

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

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (2)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0.0033 mg/L
Action level: 0.015 mg/L

22% of the listed benchmark

Monitoring period: Jan 1, 2025 to Dec 31, 2025

Copper (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Above action level

Reported level: 1.516 mg/L
Action level: 1.3 mg/L

117% of the listed benchmark

Monitoring period: Jul 1, 1996 to Dec 31, 1996

Violation history (3)

Imported violation history for Putnamville Correctional Facility
Rule	Status	Period
Revised Total Coliform Rule	Resolved	Sep 1, 2024 to Sep 30, 2024
Lead and Copper Rule	Resolved	Oct 1, 2023 to Aug 17, 2024
Revised Total Coliform Rule	Resolved	May 1, 2022 to May 31, 2022

South 43 Water Association, Inc.

IN5267009 · Groundwater influenced by surface water · 1,431 people served system-wide

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

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0.007 mg/L
Action level: 0.015 mg/L

47% of the listed benchmark

Monitoring period: Jan 1, 2021 to Dec 31, 2023

Violation history (2)

Imported violation history for South 43 Water Association, Inc.
Rule	Status	Period
TTHM	Archived	Jan 1, 2023 to Dec 31, 2023
Total Haloacetic Acids (HAA5)	Archived	Jan 1, 2023 to Dec 31, 2023

Town Of Fillmore Utilities

IN5267012 · Groundwater · 510 people served system-wide

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

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0 mg/L
Action level: 0.015 mg/L

0% of the listed benchmark

Monitoring period: Jan 1, 2022 to Dec 31, 2024

Violation history (0)

No record returned in this imported window. This is not a guarantee of tap-water safety.

Big Walnut Water Company

IN5267002 · Groundwater · 500 people served system-wide

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

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (2)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0.0014 mg/L
Action level: 0.015 mg/L

9% of the listed benchmark

Monitoring period: Jan 1, 2022 to Dec 31, 2024

Copper (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Above action level

Reported level: 1.81 mg/L
Action level: 1.3 mg/L

139% of the listed benchmark

Monitoring period: Jan 1, 2013 to Dec 31, 2015

Violation history (3)

Imported violation history for Big Walnut Water Company
Rule	Status	Period
LEAD AND COPPER RULE REVISIONS	Unaddressed	Jul 2, 2025
TTHM	Resolved	Jan 1, 2022 to Dec 31, 2022
Total Haloacetic Acids (HAA5)	Resolved	Jan 1, 2022 to Dec 31, 2022

Hardness meter

What does nearby environmental evidence show?

Very Hard

424

PPM as CaCO₃

Very Hard

PPM

424

GPG

24.8

Regional environmental evidence

USGS hardness classification scale

424 PPM

Soft
0–60Moderate
61–120Hard
121–180Very hard
181+

Parts per million

424

mg/L as CaCO₃ equivalent

Grains per gallon

24.8

1 GPG ≈ 17.1 PPM

How to use regional evidence

These samples describe nearby environmental water. They cannot establish whether your tap water is soft or hard. Use a utility result or a tap test for appliance settings and treatment sizing.

USGS sites used

Nearest site

7.2 mi

Observation range

Aug 12, 2025–Aug 22, 2025

Regional evidence confidence

Moderate

Median of the latest source-type-aligned hardness observation at each monitoring site within 25 miles. Nearest monitoring location: NAWQA AG WELL TP15 AT MORTON, IN (Well).USGS source documentation ↗Evidence tier: Regional environmental evidence. This value is not used as proof of the serving utility's treated-water hardness.

Regional context

Is 46135 typical?

These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.

Greencastle median

424 PPM

About the same

1 indexed ZIP readings · Range 424–424 PPM

Indiana median

340 PPM

84 PPM higher

290 indexed ZIP readings · Range 78.6–498 PPM

Evidence-first next steps

Confirm the problem before choosing treatment

This profile can help you ask the right question. It cannot select equipment for a property without a current result from the serving utility or the tap.

Confirm the serving system

ZIP boundaries and utility service areas do not perfectly match. Verify the system on a water bill before relying on system-wide records.

Read the current utility report

A reported action-level record needs context. Check its monitoring period and the utility's current report.

Find an official utility report →

Test for the decision you face

Use a tap hardness test before sizing a softener. For health concerns, use a certified laboratory and the correct sampling protocol.

Convert your hardness test result →

Frequently asked

Water questions for Greencastle

Is tap water safe in Greencastle?+

EPA ECHO shows no active health-based violation for the associated systems in this reporting snapshot. This does not prove every contaminant is absent; federal records can lag and household plumbing can change tap conditions.

How hard is the water?+

Utility-reported hardness is unavailable in this index. Regional samples do not establish tap-water hardness. Ask your provider or test your tap.

Do I need a water softener?+

Confirm hardness at your tap and consider actual scale or spotting before choosing treatment. Regional environmental values cannot determine whether you need a softener. A softener addresses hardness, not every contaminant.