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City water profile

Yakima water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Yakima, Washington.

Median indexed hardness

109PPM

2 indexed ZIPs

Range 85.7–132.5 PPM

State comparison
5 PPM above
State hardness rank
#54 of 133
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Yakima has 2 published ZIP profiles across Yakima County. The indexed median is 109 PPM, compared with 104 PPM across Washington.

Among the 133 Washingtoncities with an indexed median, Yakima ranks #54from highest to lowest. Across all 189 state ZIP profiles, available estimates run from 20.6to 238 PPM.

The 85.7–132.5 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 hard1 ZIP
Hard1 ZIP
Very hard0 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
34.9 miles
Profiles with evidence
2/2

Confidence labels

High: 0Moderate: 1Low: 1

Observation window: Jan 19, 2016 to Jun 2, 2026.

ZIP directory

Water reports in Yakima

Open a ZIP for site-level provenance and measurements.

ZIP code

98902

Hard

132.5 PPM

Nearest site
24.1 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

98908

Moderately Hard

85.7 PPM

Nearest site
34.9 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Yakima Water Division City Of

PWSID WA5399150

Surface water
System population served
112,858
Last reported
Jun 19, 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
Consumer Confidence RuleWA5399150Jul 1, 2024Resolved

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 Yakima

Is the water hard?

The indexed city median is 109 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.