Water Hardness in Highland, IN
Indiana · 1 zip codes · 11 matched water systems
City avg (weighted): 144 PPM
Dataset updated March 9, 202611 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology
Is Highland, IN Water Hard or Soft?
The displayed hardness for Highland, IN is 144 PPM (8.4 GPG) from Indiana American Water - Northwest, classified as moderately hard. The citywide weighted average is 144 PPM.
Water hardness is not a drinking-water safety score. It measures calcium and magnesium minerals, and address-level results can shift by pressure zone, supply blend, building plumbing, or private well.
How this city reading is built
This city reading is a weighted rollup across 11 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.
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 Highland
These systems are matched to Highland, IN. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.
| Water System | Source | Hardness | Pop. Served |
|---|---|---|---|
| Indiana American Water - Northwest IN5245015 | surface water | 144 PPM Moderately HardUSGS estimate: 384 PPM | |
| Hammond Water Works Department IN5245020 | surface water | 144 PPM Moderately HardUSGS estimate: 206 PPM | |
| Crown Point Water Works IN5245008 | surface water | 144 PPM Moderately HardUSGS estimate: 212 PPM | |
| Schererville Water Department IN5245041 | surface water | 144 PPM Moderately HardUSGS estimate: 206 PPM | |
| East Chicago Water Works IN5245012 | surface water | 144 PPM Moderately HardUSGS estimate: 185 PPM |
Zip Codes in Highland, IN
What This Means For You
Use this city reading as a local planning estimate, not a final treatment specification. Hardness can vary by utility zone, seasonal blend, private well, and building plumbing. Confirm your tap reading with a utility report or home hardness test before sizing 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 Highland, IN.
Frequently Asked Questions
How hard is the water in Highland, IN?
The citywide weighted average water hardness in Highland, IN is 144 PPM (8.4 GPG), classified as moderately hard. This is based on 11 matched water systems.
Do I need a water softener in Highland, IN?
With a citywide average hardness of 144 PPM, a water softener is worth considering for homes in Highland. Confirm your tap reading before sizing equipment.
Is hard water in Highland, IN 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 Highland, IN?
Highland, Indiana is served by 11 matched water systems across 1 zip code.
Learn More About Your Water
How to Test Water Hardness at Home
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10 min readPPM to GPG Converter + Water Hardness Scale Explained
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