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City water profile

Columbus water quality

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

Median indexed hardness

343PPM

2 indexed ZIPs

Range 342–343 PPM

State comparison
30 PPM above
State hardness rank
#122 of 386
Matched utilities
3
Active health records
0

City summary

What the indexed records say

Columbus has 2 published ZIP profiles across Bartholomew County. The indexed median is 343 PPM, compared with 313 PPM across Indiana.

Among the 386 Indianacities with an indexed median, Columbus ranks #122from highest to lowest. Across all 472 state ZIP profiles, available estimates run from 132to 371 PPM.

The 342–343 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
6.6 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 Columbus

Open a ZIP for site-level provenance and measurements.

ZIP code

47201

Very Hard

342 PPM

Nearest site
4 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

47203

Very Hard

343 PPM

Nearest site
6.6 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Columbus Municipal Utility

PWSID IN5203002

Groundwater
System population served
51,122
Last reported
Jun 30, 2026

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

Southwestern Bartholomew Water Corp.

PWSID IN5203008

Groundwater
System population served
8,652
Last reported
Jun 30, 2026

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

Garden City Mobile Home Park

PWSID IN5203005

Groundwater
System population served
140
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
Public NoticeIN5203005Jan 1, 2025Resolved
LEAD AND COPPER RULE REVISIONSIN5203005Oct 17, 2024Resolved · health-based
LEAD AND COPPER RULE REVISIONSIN5203005Oct 17, 2024Resolved
Revised Total Coliform RuleIN5203005Jul 1, 2024Resolved
Revised Total Coliform RuleIN5203008Apr 14, 2022Resolved
Revised Total Coliform RuleIN5203005Sep 1, 2021Resolved
Revised Total Coliform RuleIN5203008Aug 1, 2021Resolved
TTHMIN5203008Jan 1, 2021Resolved
Total Haloacetic Acids (HAA5)IN5203008Jan 1, 2021Resolved

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 Columbus

Is the water hard?

The indexed city median is 343 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.