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City water profile

Hiawatha water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Hiawatha, Iowa.

Median indexed hardness

264PPM

2 indexed ZIPs

Range 260–267 PPM

State comparison
17 PPM below
State hardness rank
#543 of 683
Matched utilities
2
Active health records
0

City summary

What the indexed records say

Hiawatha has 2 published ZIP profiles across Linn County. The indexed median is 264 PPM, compared with 281 PPM across Iowa.

Among the 683 Iowacities with an indexed median, Hiawatha ranks #543from highest to lowest. Across all 723 state ZIP profiles, available estimates run from 182to 834 PPM.

The 260–267 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
6.5 miles
Profiles with evidence
2/2

Confidence labels

High: 0Moderate: 2Low: 0

Observation window: Feb 9, 2016 to Mar 3, 2026.

ZIP directory

Water reports in Hiawatha

Open a ZIP for site-level provenance and measurements.

ZIP code

52233

Very Hard

267 PPM

Nearest site
2.9 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

52341

Very Hard

260 PPM

Nearest site
6.5 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Hiawatha Water Dept

PWSID IA5735045

Groundwater
System population served
7,183
Last reported
Jun 17, 2026

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

Country Manor Estates

PWSID IA5784307

Groundwater
System population served
228
Last reported
Jun 17, 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 RuleIA5784307Dec 1, 2025Resolved
Public NoticeIA5784307May 13, 2023Resolved
Lead and Copper RuleIA5784307Dec 1, 2022Resolved
Public NoticeIA5784307Oct 12, 2022Resolved
TTHMIA5784307Aug 1, 2022Resolved
Total Haloacetic Acids (HAA5)IA5784307Aug 1, 2022Resolved
Public NoticeIA5784307Jul 13, 2022Resolved
Consumer Confidence RuleIA5784307Jul 1, 2022Resolved
Public NoticeIA5784307May 22, 2022Resolved
Lead and Copper RuleIA5784307Dec 1, 2019Unaddressed

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 Hiawatha

Is the water hard?

The indexed city median is 264 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.