How hard is the water in Kokomo, 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 Kokomo, IN 46901

Q: Is tap water safe in Kokomo?

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 Howard County.

No active health-based violation reported

Largest possible serving system: Indiana American Water - Kokomo
Source water: Surface water + Groundwater
County: Howard 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

7 systems

Serves 59,313 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.

Indiana American Water - Kokomo

IN5234007 · Surface water · 59,313 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: 0.002 mg/L
Action level: 0.015 mg/L

13% 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.

Oak Brook Estates

IN5234003 · Groundwater · 455 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: 0.0012 mg/L
Action level: 0.015 mg/L

8% of the listed benchmark

Monitoring period: Jan 1, 2023 to Dec 31, 2025

Violation history (2)

Imported violation history for Oak Brook Estates
Rule	Status	Period
Consumer Confidence Rule	Resolved	Oct 7, 2024 to Feb 21, 2025
Consumer Confidence Rule	Resolved	Oct 1, 2022 to Oct 11, 2024

Western Estates Mobile Home Park

IN5234002 · Groundwater · 248 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: 0.0047 mg/L
Action level: 0.015 mg/L

32% of the listed benchmark

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

Violation history (4)

Imported violation history for Western Estates Mobile Home Park
Rule	Status	Period
Revised Total Coliform Rule	Resolved	Oct 1, 2022 to Dec 16, 2022
Lead and Copper Rule	Resolved	Oct 1, 2021 to Sep 9, 2022
Consumer Confidence Rule	Resolved	Oct 1, 2021 to Apr 25, 2022
Revised Total Coliform Rule	Resolved	Aug 1, 2021 to Aug 31, 2021

Timbernest Townhouses

IN5234014 · Groundwater · 175 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.

The Oaks Of Kokomo

IN5234001 · Groundwater · 150 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: 0.005 mg/L
Action level: 0.015 mg/L

33% of the listed benchmark

Monitoring period: Jan 1, 2000 to Dec 31, 2002

Violation history (0)

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

Village Green Mobile Home Park

IN5234009 · Groundwater · 102 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: 0.0116 mg/L
Action level: 0.015 mg/L

77% of the listed benchmark

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

Violation history (4)

Imported violation history for Village Green Mobile Home Park
Rule	Status	Period
Consumer Confidence Rule	Resolved	Oct 1, 2025 to Dec 10, 2025
Lead and Copper Rule	Resolved	Jan 1, 2022 to Nov 16, 2023
Revised Total Coliform Rule	Resolved	Dec 1, 2021 to Dec 31, 2021
Lead and Copper RuleHealth-based	Resolved	Oct 24, 2021 to Sep 27, 2022

Dixon Woods Apartments

IN5234011 · Groundwater · 25 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 (4)

Imported violation history for Dixon Woods Apartments
Rule	Status	Period
Revised Total Coliform Rule	Resolved	May 1, 2025 to Aug 4, 2025
Nitrite	Resolved	Apr 1, 2024 to Apr 24, 2024
Revised Total Coliform Rule	Resolved	Jul 1, 2023 to Jul 31, 2023
Revised Total Coliform Rule	Resolved	Mar 1, 2023 to Mar 31, 2023

Hardness meter

What does nearby environmental evidence show?

Very Hard

334

PPM as CaCO₃

Very Hard

PPM

334

GPG

19.5

Regional environmental evidence

USGS hardness classification scale

334 PPM

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

Parts per million

334

mg/L as CaCO₃ equivalent

Grains per gallon

19.5

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

6.4 mi

Observation range

Aug 27, 2024–Aug 28, 2024

Regional evidence confidence

Moderate

Median of the latest source-type-aligned hardness observation at each monitoring site within 25 miles. Nearest monitoring location: Deer Creek at Elm St nr Miami, IN (Stream).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 46901 typical?

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

Kokomo median

334 PPM

About the same

3 indexed ZIP readings · Range 334–334 PPM

Indiana median

340 PPM

6 PPM lower

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

Use the current Consumer Confidence Report for treated-water results and official notices.

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 →

Nearby indexed reports

More local profiles in Kokomo

Estimates can differ across a city because monitoring locations and associated systems differ.

View all Kokomo reports →

ZIP 46902

Regional context

334PPM · environmental

ZIP 46965

Regional context

334PPM · environmental

Frequently asked

Water questions for Kokomo

Is tap water safe in Kokomo?+

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.