City water profile

Water hardness in Carmel

Find official utility reports, understand hardness, and check the water system serving your home in Carmel, Indiana.

Utility-reported hardness

Not yet available

Check your provider and source →

State comparison: 8 PPM below
Evidence comparison rank: #2 of 2
Matched utilities: 3
Active health records: 0

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 →

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.

Carmel Water Department

IN5229004 · Groundwater influenced by surface water · 99,927 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: 0.0029 mg/L
Action level: 0.015 mg/L

20% of the listed benchmark

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

Violation history (4)

Imported violation history for Carmel Water Department
Rule	Status	Period
Groundwater RuleHealth-based	Resolved	Jan 1, 2024 to Jan 31, 2024
Groundwater Rule	Resolved	Jan 1, 2024 to Jan 31, 2024
Consumer Confidence Rule	Resolved	Jul 1, 2022 to Aug 9, 2022
Revised Total Coliform RuleHealth-based	Resolved	Oct 1, 2021 to Oct 12, 2021

Citizens Water Of Westfield, Llc

IN5229009 · Groundwater · 61,493 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: 0.0031 mg/L
Action level: 0.015 mg/L

21% 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.

Carmel Clay Water

IN5229024 · Surface water · 393 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, 2023 to Dec 31, 2025

Violation history (1)

Imported violation history for Carmel Clay Water
Rule	Status	Period
Consumer Confidence Rule	Resolved	Jul 1, 2022 to Aug 9, 2022

City summary

What the indexed records say

Carmel has 4 published ZIP profiles across Hamilton County. The regional-evidence median is 340 PPM. Its comparison-eligible median is 340 PPM versus 348 PPM statewide.

Among the 2 Indianacities meeting the comparison standard, Carmel ranks #2from highest to lowest. Across all 472 state ZIP profiles, available estimates run from 121to 420 PPM.

The 340–340 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs

Moderately hard0 ZIPs

Hard0 ZIPs

Very hard4 ZIPs

4 of 4 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance: 9.3 miles
Profiles with evidence: 4/4

Confidence labels

High: 3Moderate: 1Low: 0

1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
3. Use a measured hardness result. Confirm health concerns or treatment sizing with the right method.

Continue comparing

Other Indiana communities

Arcadia

Hamilton County

355 PPM median

Atlanta

Hamilton County

355 PPM median

Cicero

Hamilton County

352 PPM median

Noblesville

Hamilton County

371 PPM median

Westfield

Hamilton County

340 PPM median

Zionsville

Hamilton County

248 PPM median

Search all 386 Indiana cities →

Questions people ask

About water in Carmel

Is the water hard?

Check the utility-reported result above when available. Nearby environmental samples cannot establish tap-water hardness. Ask your provider or test your tap.

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.