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City water profile

Smithville water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Smithville, Oklahoma.

Median indexed hardness

40PPM

One indexed ZIP

Range 39.6–39.6 PPM

State comparison
186 PPM below
State hardness rank
#102 of 108
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Smithville has 1 published ZIP profile across Le Flore County. The indexed median is 40 PPM, compared with 226 PPM across Oklahoma.

Among the 108 Oklahomacities with an indexed median, Smithville ranks #102from highest to lowest. Across all 148 state ZIP profiles, available estimates run from 7to 610 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

Soft1 ZIP
Moderately hard0 ZIPs
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
25.8 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Mar 3, 2016 to May 25, 2023.

ZIP directory

Water reports in Smithville

Open a ZIP for site-level provenance and measurements.

ZIP code

74957

Soft

39.6 PPM

Nearest site
25.8 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Mccurtain Co. Rwd #6 (kiamichi)

PWSID OK3004817

Surface water
System population served
600
Last reported
May 13, 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
LEAD AND COPPER RULE REVISIONSOK3004817Oct 17, 2024Resolved
LEAD AND COPPER RULE REVISIONSOK3004817Oct 17, 2024Resolved · health-based
Total Haloacetic Acids (HAA5)OK3004817Apr 1, 2021Resolved
TTHMOK3004817Apr 1, 2021Resolved
Total Haloacetic Acids (HAA5)OK3004817Jan 1, 2021Resolved · health-based
Total Haloacetic Acids (HAA5)OK3004817Jan 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 Smithville

Is the water hard?

The indexed city median is 40 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.