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Water Hardness in Hennessey, OK

Oklahoma · 1 zip codes · 1 matched water system

635 PPM
37.1 GPG
Very Hard
0Soft60120180300+
Estimated — Nearby Data

Dataset updated March 9, 20261 matched water system 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 1 matched water system and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
1 estimated source
This city reading needs local confirmation before equipment sizing or purchase decisions.
Water source profile
Primarily groundwater
Groundwater commonly picks up calcium and magnesium after contact with rock and soil. 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 Hennessey

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

1 water system
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.
Hennessey
OK2003704
Very Hard
635 PPMgroundwater2,058 servedEstimated — Nearby Data

Zip Codes in Hennessey, 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 Hennessey, OK.

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Frequently Asked Questions

How hard is the water in Hennessey, OK?

The citywide weighted average water hardness in Hennessey, OK is 635 PPM (37.1 GPG), classified as very hard. This is based on 1 matched water system.

Do I need a water softener in Hennessey, OK?

With a citywide average hardness of 635 PPM, a water softener is recommended for homes in Hennessey. Confirm your tap reading before sizing equipment.

Is hard water in Hennessey, 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 Hennessey, OK?

Hennessey, Oklahoma is served by 1 matched water system across 1 zip code.

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