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Water Hardness in Williamsport, OH

Ohio · 1 zip codes · 5 matched water systems

392 PPM
22.9 GPG
Very 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 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 Williamsport

These systems are matched to Williamsport, OH. 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.
Circleville City Pws
OH6500412
Very Hard
392 PPMgroundwater13,927 servedEstimated — Nearby Data
Earnhart Hill Water District Pws
OH6500812
Very Hard
392 PPMgroundwater10,057 servedEstimated — Nearby Data
Williamsport Village Pws
OH6503012
Very Hard
392 PPMgroundwater1,038 servedEstimated — Nearby Data
Darbyville Village Pws
OH6503412
Very Hard
392 PPMgroundwater293 servedEstimated — Nearby Data
Plumwood Mobile Home Park
OH4901212
Very Hard
392 PPMgroundwater48 servedEstimated — Nearby Data

Zip Codes in Williamsport, OH

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 Williamsport, OH.

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Frequently Asked Questions

How hard is the water in Williamsport, OH?

The citywide weighted average water hardness in Williamsport, OH is 392 PPM (22.9 GPG), classified as very hard. This is based on 5 matched water systems.

Do I need a water softener in Williamsport, OH?

With a citywide average hardness of 392 PPM, a water softener is recommended for homes in Williamsport. Confirm your tap reading before sizing equipment.

Is hard water in Williamsport, OH 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 Williamsport, OH?

Williamsport, Ohio is served by 5 matched water systems across 1 zip code.

Learn More About Your Water