WH

Water Hardness in Adair, OK

Oklahoma · 1 zip codes · 5 matched water systems

239 PPM
14 GPG
Hard
0Soft60120180300+
Estimated — Nearby Data

Dataset updated March 9, 20265 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

Source context

How this city reading is built

This city reading is a weighted rollup across 5 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
5 estimated sources
This city reading needs local confirmation before equipment sizing or purchase decisions.
Water source profile
Primarily surface water
Surface-water hardness can shift with reservoirs, runoff, season, and treatment. This profile is weighted by known population served across matched systems.
Data recency
March 9, 2026
Dataset rebuilt March 9, 2026; individual utility reporting years can vary.

Hardness is a mineral-content reading, not a drinking-water safety rating. Use it for scale, appliance, and softener decisions; check your utility report or test your tap before sizing treatment equipment. See how we calculate local readings.

Water Systems in Adair

These systems are matched to Adair, OK. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.

5 water systems
PWSID is the public water system identifier. Data Source shows whether the hardness value comes from a treated-water report, USGS monitoring, or a local estimate; source year is shown when available.
Pryor
OK3004611
Slightly Hard
110 PPMsurface water8,784 servedEstimated — County Avg
Mayes Co Rwd # 2
OK3004608
Slightly Hard
110 PPMsurface water6,280 servedEstimated — County Avg
Okla Ordnance Works Authority
OK1021602
Slightly Hard
110 PPMsurface water4,000 servedEstimated — County Avg
Mayes Co Rwd # 5
OK3004616
Very Hard
845 PPMsurface water3,360 servedEstimated — Nearby Data
Adair
OK1021613
Very Hard
845 PPMsurface water704 servedEstimated — Nearby Data

Zip Codes in Adair, OK

What This Means For You

Recommendations are based on the displayed hardness reading. Confirm your tap reading before sizing or buying treatment equipment.

Know your water hardness?

If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Adair, OK.

Submit Your Data

Frequently Asked Questions

How hard is the water in Adair, OK?

The citywide weighted average water hardness in Adair, OK is 239 PPM (14 GPG), classified as hard. This is based on 5 matched water systems.

Do I need a water softener in Adair, OK?

With a citywide average hardness of 239 PPM, a water softener is recommended for homes in Adair. Confirm your tap reading before sizing equipment.

Is hard water in Adair, OK safe to drink?

Water hardness itself is a mineral-content reading, not a drinking-water safety rating. Calcium and magnesium are naturally occurring minerals, but you should check your utility's Consumer Confidence Report for contaminant and compliance information.

How many water systems serve Adair, OK?

Adair, Oklahoma is served by 5 matched water systems across 1 zip code.

Learn More About Your Water