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City water profile

Ardmore water quality

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

Median indexed hardness

104PPM

2 indexed ZIPs

Range 101.5–107 PPM

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

City summary

What the indexed records say

Ardmore has 2 published ZIP profiles across Carter County. The indexed median is 104 PPM, compared with 226 PPM across Oklahoma.

Among the 108 Oklahomacities with an indexed median, Ardmore ranks #96from highest to lowest. Across all 148 state ZIP profiles, available estimates run from 7to 610 PPM.

The 101.5–107 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 hard2 ZIPs
Hard0 ZIPs
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
37.8 miles
Profiles with evidence
2/2

Confidence labels

High: 0Moderate: 1Low: 1

Observation window: Apr 4, 2016 to May 20, 2026.

ZIP directory

Water reports in Ardmore

Open a ZIP for site-level provenance and measurements.

ZIP code

73401

Moderately Hard

107 PPM

Nearest site
23 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

73458

Moderately Hard

101.5 PPM

Nearest site
37.8 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Ardmore

PWSID OK1010814

Surface water
System population served
24,893
Last reported
May 13, 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
Interim Enhanced Surface Water Treatment RuleOK1010814May 1, 2024Resolved · health-based
CARBON, TOTALOK1010814Jan 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 Ardmore

Is the water hard?

The indexed city median is 104 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.