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City water profile

Walnut Ridge water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Walnut Ridge, Arkansas.

Median indexed hardness

148PPM

One indexed ZIP

Range 148–148 PPM

State comparison
77 PPM above
State hardness rank
#39 of 180
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Walnut Ridge has 1 published ZIP profile across Lawrence County. The indexed median is 148 PPM, compared with 71 PPM across Arkansas.

Among the 180 Arkansascities with an indexed median, Walnut Ridge ranks #39from highest to lowest. Across all 210 state ZIP profiles, available estimates run from 4.8to 283 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
Hard1 ZIP
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
39.9 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Jan 11, 2016 to Mar 19, 2026.

ZIP directory

Water reports in Walnut Ridge

Open a ZIP for site-level provenance and measurements.

ZIP code

72476

Hard

148 PPM

Nearest site
39.9 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Walnut Ridge Waterworks

PWSID AR0000309

Surface water
System population served
5,823
Last reported
May 12, 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
Revised Total Coliform RuleAR0000309Jul 1, 2025Resolved
Consumer Confidence RuleAR0000309Jul 1, 2021Resolved

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 Walnut Ridge

Is the water hard?

The indexed city median is 148 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.