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City water profile

Iola water quality

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

Median indexed hardness

200PPM

One indexed ZIP

Range 199.5–199.5 PPM

State comparison
89 PPM below
State hardness rank
#386 of 484
Matched utilities
5
Active health records
0

City summary

What the indexed records say

Iola has 1 published ZIP profile across Allen County. The indexed median is 200 PPM, compared with 289 PPM across Kansas.

Among the 484 Kansascities with an indexed median, Iola ranks #386from highest to lowest. Across all 541 state ZIP profiles, available estimates run from 72.2to 707 PPM.

Because only one ZIP is represented, the city median and range are the same local estimate. It should not be read as multiple independent samples across the community. At least one estimate is marked low confidence, so observation distance and date deserve extra attention.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard1 ZIP

1 of 1 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
54.3 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: May 2, 2016 to Jul 29, 2025.

ZIP directory

Water reports in Iola

Open a ZIP for site-level provenance and measurements.

ZIP code

66749

Very Hard

199.5 PPM

Nearest site
54.3 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Iola, City Of

PWSID KS2000103

Surface water
System population served
5,343
Last reported
May 15, 2026

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

Allen Co Rwd 15

PWSID KS2000121

Surface water
System population served
135
Last reported
May 15, 2026

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

Allen Co Rwd 4

PWSID KS2000112

Surface water
System population served
52
Last reported
May 15, 2026

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

Allen Co Rwd 6

PWSID KS2000107

Surface water
System population served
45
Last reported
May 15, 2026

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

Public Wholesale Wsd 5

PWSID KS2000119

Surface water
System population served
1
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.

RecordSystemPeriodStatus
LEAD AND COPPER RULE REVISIONSKS2000107Jul 2, 2025Unaddressed
Total Haloacetic Acids (HAA5)KS2000112Jan 1, 2025Archived
TTHMKS2000112Jan 1, 2025Archived
LEAD AND COPPER RULE REVISIONSKS2000112Oct 17, 2024Resolved
LEAD AND COPPER RULE REVISIONSKS2000107Oct 17, 2024Unaddressed
ChlorineKS2000112Aug 1, 2024Resolved
Revised Total Coliform RuleKS2000112Aug 1, 2024Resolved
Revised Total Coliform RuleKS2000112Aug 29, 2023Resolved · health-based
Revised Total Coliform RuleKS2000112Aug 1, 2023Resolved
ChlorineKS2000112Jul 1, 2023Resolved

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 Iola

Is the water hard?

The indexed city median is 200 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.