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City water profile

Broken Arrow water quality

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

Median indexed hardness

137PPM

2 indexed ZIPs

Range 137–137 PPM

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

City summary

What the indexed records say

Broken Arrow has 2 published ZIP profiles across Tulsa County. The indexed median is 137 PPM, compared with 226 PPM across Oklahoma.

Among the 108 Oklahomacities with an indexed median, Broken Arrow ranks #84from highest to lowest. Across all 148 state ZIP profiles, available estimates run from 7to 610 PPM.

The 137–137 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 hard0 ZIPs
Hard2 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
71.8 miles
Profiles with evidence
2/2

Confidence labels

High: 0Moderate: 0Low: 2

Observation window: Mar 2, 2016 to May 24, 2023.

ZIP directory

Water reports in Broken Arrow

Open a ZIP for site-level provenance and measurements.

ZIP code

74011

Hard

137 PPM

Nearest site
71.8 mi
Confidence
Low

View full ZIP evidence →

ZIP code

74012

Hard

137 PPM

Nearest site
71.2 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Broken Arrow Municipal Authority

PWSID OK1021508

Surface water
System population served
116,330
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.

No violation records are included in the current lookback window.

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 Broken Arrow

Is the water hard?

The indexed city median is 137 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.