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City water profile

Pocatello water quality

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

Median indexed hardness

232PPM

2 indexed ZIPs

Range 230–233 PPM

State comparison
64 PPM above
State hardness rank
#6 of 67
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Pocatello has 2 published ZIP profiles across Bannock County. The indexed median is 232 PPM, compared with 168 PPM across Idaho.

Among the 67 Idahocities with an indexed median, Pocatello ranks #6from highest to lowest. Across all 78 state ZIP profiles, available estimates run from 22.2to 339 PPM.

The 230–233 PPM range shows how much the available ZIP estimates vary within the city label. 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 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
42.7 miles
Profiles with evidence
2/2

Confidence labels

High: 0Moderate: 0Low: 2

Observation window: May 16, 2016 to Jun 18, 2026.

ZIP directory

Water reports in Pocatello

Open a ZIP for site-level provenance and measurements.

ZIP code

83201

Very Hard

230 PPM

Nearest site
42.2 mi
Confidence
Low

View full ZIP evidence →

ZIP code

83209

Very Hard

233 PPM

Nearest site
42.7 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Pocatello City Of

PWSID ID6030043

Groundwater
System population served
58,231
Last reported
Jun 26, 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
ChlorineID6030043Apr 1, 2025Archived
E. COLIID6030043Oct 9, 2023Resolved
NitrateID6030043Oct 1, 2021Resolved · health-based

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 Pocatello

Is the water hard?

The indexed city median is 232 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.