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City water profile

Grangeville water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Grangeville, Idaho.

Median indexed hardness

110PPM

One indexed ZIP

Range 110–110 PPM

State comparison
58 PPM below
State hardness rank
#54 of 67
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Grangeville has 1 published ZIP profile across Idaho County. The indexed median is 110 PPM, compared with 168 PPM across Idaho.

Among the 67 Idahocities with an indexed median, Grangeville ranks #54from highest to lowest. Across all 78 state ZIP profiles, available estimates run from 22.2to 339 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.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard1 ZIP
Hard0 ZIPs
Very hard0 ZIPs

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
6.8 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: Jul 13, 2016 to Jun 4, 2024.

ZIP directory

Water reports in Grangeville

Open a ZIP for site-level provenance and measurements.

ZIP code

83530

Moderately Hard

110 PPM

Nearest site
6.8 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Grangeville Water Dept

PWSID ID2250023

Groundwater
System population served
3,151
Last reported
Jun 26, 2026

A municipal system, in-state city, and served county all agree with this Census 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
TTHMID2250023Jan 1, 2025Resolved
NitrateID2250023Jan 1, 2025Archived
Total Haloacetic Acids (HAA5)ID2250023Jan 1, 2025Resolved

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 Grangeville

Is the water hard?

The indexed city median is 110 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.