Is tap water safe in El Reno?

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 El Reno, OK?

Nearby USGS observations produce an estimate of 380 ppm (22.2 grains per gallon), classified as very hard. This is not a tap measurement.

Do I need a water softener in ZIP code 73014?

At 380 ppm, a correctly sized whole-house softener can reduce scale buildup and hard-water spotting. Treatment for hardness does not remove all health-related contaminants.

City water profile

El Reno water quality

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

Median indexed hardness

380PPM

3 indexed ZIPs

Range 380–380 PPM

State comparison: 154 PPM above
State hardness rank: #14 of 108
Matched utilities: 1
Active health records: 0

City summary

What the indexed records say

El Reno has 3 published ZIP profiles across Canadian County. The indexed median is 380 PPM, compared with 226 PPM across Oklahoma.

Among the 108 Oklahomacities with an indexed median, El Reno ranks #14from highest to lowest. Across all 148 state ZIP profiles, available estimates run from 7to 610 PPM.

The 380–380 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs

Moderately hard0 ZIPs

Hard0 ZIPs

Very hard3 ZIPs

3 of 3 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance: 4.9 miles
Profiles with evidence: 3/3

Confidence labels

High: 0Moderate: 3Low: 0

Observation window: Jan 5, 2016 to May 21, 2026.

ZIP directory

Water reports in El Reno

Open a ZIP for site-level provenance and measurements.

ZIP code

73014

Very Hard

380 PPM

Nearest site: 4.9 mi
Confidence: Moderate

View full ZIP evidence →

ZIP code

73022

Very Hard

380 PPM

Nearest site: 4.1 mi
Confidence: Moderate

View full ZIP evidence →

ZIP code

73036

Very Hard

380 PPM

Nearest site: 9.7 mi
Confidence: Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

El Reno

PWSID OK2000902

Surface water

System population served: 16,212
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.

Record	System	Period	Status
LEAD AND COPPER RULE REVISIONS	OK2000902	Oct 17, 2024	Resolved · health-based
LEAD AND COPPER RULE REVISIONS	OK2000902	Oct 17, 2024	Resolved
TTHM	OK2000902	Jul 1, 2024	Resolved · health-based
Interim Enhanced Surface Water Treatment Rule	OK2000902	Dec 1, 2022	Resolved · health-based
Surface Water Treatment Rule	OK2000902	Oct 1, 2022	Resolved · health-based
Interim Enhanced Surface Water Treatment Rule	OK2000902	Oct 1, 2022	Resolved · health-based
Interim Enhanced Surface Water Treatment Rule	OK2000902	Feb 1, 2022	Resolved
Interim Enhanced Surface Water Treatment Rule	OK2000902	May 1, 2021	Resolved · health-based
Surface Water Treatment Rule	OK2000902	May 1, 2021	Resolved · health-based
Interim Enhanced Surface Water Treatment Rule	OK2000902	Feb 1, 2021	Resolved · health-based

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 Oklahoma communities

Piedmont

Canadian County

380 PPM median

Bethany

Oklahoma County

380 PPM median

Chickasha

Grady County

380 PPM median

Guthrie

Logan County

380 PPM median

Newcastle

Mcclain County

380 PPM median

Perry

Noble County

380 PPM median

Search all 108 Oklahoma cities →

Questions people ask

About water in El Reno

Is the water hard?

The indexed city median is 380 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.