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City water profile

Gardner water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Gardner, Kansas.

Median indexed hardness

243PPM

2 indexed ZIPs

Range 243–243 PPM

State comparison
46 PPM below
State hardness rank
#315 of 484
Matched utilities
2
Active health records
0

City summary

What the indexed records say

Gardner has 2 published ZIP profiles across Johnson County. The indexed median is 243 PPM, compared with 289 PPM across Kansas.

Among the 484 Kansascities with an indexed median, Gardner ranks #315from highest to lowest. Across all 541 state ZIP profiles, available estimates run from 72.2to 707 PPM.

The 243–243 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
11.7 miles
Profiles with evidence
2/2

Confidence labels

High: 0Moderate: 2Low: 0

Observation window: Jan 11, 2016 to Jun 9, 2026.

ZIP directory

Water reports in Gardner

Open a ZIP for site-level provenance and measurements.

ZIP code

66030

Very Hard

243 PPM

Nearest site
11.7 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

66031

Very Hard

243 PPM

Nearest site
11.2 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Gardner, City Of

PWSID KS2009106

Surface water
System population served
23,942
Last reported
May 15, 2026

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

Johnson Co Rwd 7

PWSID KS2009104

Surface water
System population served
6,457
Last reported
May 15, 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.

No violation records are included in the current lookback window.

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 Gardner

Is the water hard?

The indexed city median is 243 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.