WH

Water Hardness in Chelsea, OK

Oklahoma · 1 zip codes · 8 matched water systems

845 PPM
49.4 GPG
Very Hard
0Soft60120180300+
Estimated — Nearby Data

Dataset updated March 9, 20268 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 8 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
8 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 Chelsea

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

8 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.
Claremore
OK1021512
Very Hard
845 PPMsurface water15,873 servedEstimated — Nearby Data
Rogers Co Rwd # 5
OK1021507
Very Hard
845 PPMsurface water11,782 servedEstimated — County Avg
Rogers Co Rwd # 3 Cot Sta
OK3006650
Very Hard
845 PPMsurface water10,750 servedEstimated — Nearby Data
Rogers Co Rwd # 3 Lake Plant
OK1021513
Very Hard
845 PPMsurface water10,470 servedEstimated — Nearby Data
Rogers Co Rwd # 7
OK3006604
Very Hard
845 PPMsurface water3,040 servedEstimated — Nearby Data
Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in Chelsea, OK

What This Means For You

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

Very Hard Water - Treatment Strongly Recommended

Your water is very hard. Without treatment, you can expect significant scale buildup in pipes and appliances, higher energy bills from reduced water heater efficiency, and persistent issues with skin and hair dryness.

Recommended Products

Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | Size Calculator | How to Test Your Water

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 Chelsea, OK.

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Frequently Asked Questions

How hard is the water in Chelsea, OK?

The citywide weighted average water hardness in Chelsea, OK is 845 PPM (49.4 GPG), classified as very hard. This is based on 8 matched water systems.

Do I need a water softener in Chelsea, OK?

With a citywide average hardness of 845 PPM, a water softener is recommended for homes in Chelsea. Confirm your tap reading before sizing equipment.

Is hard water in Chelsea, 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 Chelsea, OK?

Chelsea, Oklahoma is served by 8 matched water systems across 1 zip code.

Learn More About Your Water