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Water Hardness in Prairie Du Roche, IL

Illinois · 1 zip codes · 2 matched water systems

310 PPM
18.1 GPG
Very Hard
0Soft60120180300+
Estimated — Nearby Data

Dataset updated March 9, 20262 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 2 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
2 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 Prairie Du Roche

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

2 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.
Menard Correctional Center
IL1575550
Very Hard
287 PPMsurface water2,950 servedEstimated — County Avg
Prairie Du Rocher
IL1570400
Very Hard
399 PPMgroundwater759 servedEstimated — Nearby Data

Zip Codes in Prairie Du Roche, IL

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 Prairie Du Roche, IL.

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Frequently Asked Questions

How hard is the water in Prairie Du Roche, IL?

The citywide weighted average water hardness in Prairie Du Roche, IL is 310 PPM (18.1 GPG), classified as very hard. This is based on 2 matched water systems.

Do I need a water softener in Prairie Du Roche, IL?

With a citywide average hardness of 310 PPM, a water softener is recommended for homes in Prairie Du Roche. Confirm your tap reading before sizing equipment.

Is hard water in Prairie Du Roche, IL 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 Prairie Du Roche, IL?

Prairie Du Roche, Illinois is served by 2 matched water systems across 1 zip code.

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