Is tap water safe in Lawrence?

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.

How hard is the water in Lawrence, IN?

Nearby USGS observations produce an estimate of 349.5 ppm (20.4 grains per gallon), classified as very hard. This is not a tap measurement.

Do I need a water softener in ZIP code 46216?

At 349.5 ppm, a correctly sized whole-house softener can reduce scale buildup and hard-water spotting. Treatment for hardness does not remove all health-related contaminants.

City water profile

Lawrence water quality

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

Median indexed hardness

350PPM

2 indexed ZIPs

Range 349.5–349.5 PPM

State comparison: 37 PPM above
State hardness rank: #64 of 386
Matched utilities: 1
Active health records: 0

City summary

What the indexed records say

Lawrence has 2 published ZIP profiles across Marion County. The indexed median is 350 PPM, compared with 313 PPM across Indiana.

Among the 386 Indianacities with an indexed median, Lawrence ranks #64from highest to lowest. Across all 472 state ZIP profiles, available estimates run from 132to 371 PPM.

The 349.5–349.5 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 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: 13.1 miles
Profiles with evidence: 2/2

Confidence labels

High: 0Moderate: 2Low: 0

Observation window: Mar 30, 2016 to Sep 10, 2025.

ZIP directory

Water reports in Lawrence

Open a ZIP for site-level provenance and measurements.

ZIP code

46216

Very Hard

349.5 PPM

Nearest site: 13.1 mi
Confidence: Moderate

View full ZIP evidence →

ZIP code

46236

Very Hard

349.5 PPM

Nearest site: 11 mi
Confidence: Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

City Of Lawrence Utilities

PWSID IN5249005

Groundwater

System population served: 49,000
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.

Record	System	Period	Status
TTHM	IN5249005	Jan 1, 2026	Archived · health-based
TTHM	IN5249005	Oct 1, 2025	Archived · health-based
TTHM	IN5249005	Jul 1, 2025	Archived · health-based
TTHM	IN5249005	Apr 1, 2025	Archived · health-based
Revised Total Coliform Rule	IN5249005	Jan 1, 2022	Resolved
Revised Total Coliform Rule	IN5249005	Aug 1, 2021	Resolved · health-based
Public Notice	IN5249005	Aug 1, 2021	Resolved

Practical next steps

Move from index to evidence

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. Test the tap when needed. Confirm health concerns or treatment sizing with the right method.

Continue comparing

Other Indiana communities

Chesterfield

Madison County

350 PPM median

Arcadia

Hamilton County

350 PPM median

Atlanta

Hamilton County

350 PPM median

Cicero

Hamilton County

350 PPM median

Kirklin

Clinton County

350 PPM median

Lebanon

Boone County

350 PPM median

Search all 386 Indiana cities →

Questions people ask

About water in Lawrence

Is the water hard?

The indexed city median is 350 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.