Is tap water safe in Fort Smith?

EPA SDWIS shows no active health-based violation in this profile's reporting window. That is not the same as proving every contaminant is absent, and federal data can lag state and utility records.

How hard is the water in Fort Smith, AR?

Nearby USGS observations produce an estimate of 52.4 ppm (3.1 grains per gallon), classified as soft. This is not a tap measurement.

Do I need a water softener in ZIP code 72901?

There is no high-hardness trigger in this profile. Confirm conditions with an at-home hardness test before purchasing equipment.

City water profile

Fort Smith water quality

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

Median indexed hardness

52PPM

5 indexed ZIPs

Range 50.1–52.4 PPM

State comparison: 19 PPM below
State hardness rank: #111 of 180
Matched utilities: 1
Active health records: 0

City summary

What the indexed records say

Fort Smith has 5 published ZIP profiles across Sebastian County. The indexed median is 52 PPM, compared with 71 PPM across Arkansas.

Among the 180 Arkansascities with an indexed median, Fort Smith ranks #111from highest to lowest. Across all 210 state ZIP profiles, available estimates run from 4.8to 283 PPM.

The 50.1–52.4 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft5 ZIPs

Moderately hard0 ZIPs

Hard0 ZIPs

Very hard0 ZIPs

5 of 5 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance: 6.7 miles
Profiles with evidence: 5/5

Confidence labels

High: 0Moderate: 5Low: 0

Fort Smith Water Utilities

PWSID AR0000507

Surface water

System population served: 86,209
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.

No violation records are included in the current lookback window.

Practical next steps

Move from index to evidence

1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
3. Test the tap when needed. Confirm health concerns or treatment sizing with the right method.

Continue comparing

Other Arkansas communities

Barling

Sebastian County

52 PPM median

Greenwood

Sebastian County

49 PPM median

Hackett

Sebastian County

37 PPM median

Mansfield

Sebastian County

34 PPM median

Marion

Crittenden County

52 PPM median

Osceola

Mississippi County

52 PPM median

Search all 180 Arkansas cities →

Questions people ask

About water in Fort Smith

Is the water hard?

The indexed city median is 52 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.