WH

Water Hardness in Newark, OH

Ohio · 1 zip codes · 7 matched water systems

343 PPM
20 GPG
Very Hard
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 20267 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 7 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
7 USGS-backed sources
7 matched systems total for this city; USGS monitoring is used where treated-water reports are unavailable.
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 Newark

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

7 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.
Newark City Pws
OH4502314
Very Hard
346 PPMsurface water49,934 servedHigh Confidence — USGS Monitoring
Licking Regional Water District
OH4505412
Very Hard
418 PPMgroundwater17,818 servedHigh Confidence — USGS Monitoring
City Of Heath Pws
OH4500912
Hard
200 PPMgroundwater10,310 servedHigh Confidence — USGS Monitoring
St Louisville Village Pws
OH4504012
Very Hard
346 PPMgroundwater374 servedHigh Confidence — USGS Monitoring
Wilkins Mobile Home Park
OH4503312
Very Hard
346 PPMgroundwater115 servedHigh Confidence — USGS Monitoring
Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in Newark, 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 Newark, OH.

Submit Your Data

Frequently Asked Questions

How hard is the water in Newark, OH?

The citywide weighted average water hardness in Newark, OH is 343 PPM (20 GPG), classified as very hard. This is based on 7 matched water systems.

Do I need a water softener in Newark, OH?

With a citywide average hardness of 343 PPM, a water softener is recommended for homes in Newark. Confirm your tap reading before sizing equipment.

Is hard water in Newark, 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 Newark, OH?

Newark, Ohio is served by 7 matched water systems across 1 zip code.

Learn More About Your Water