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Water Hardness in Manlius, IL

Illinois · 1 zip codes · 1 matched water system

148 PPM
8.7 GPG
Moderately Hard
0Soft60120180300+
Verified — Annual Water Quality Report

City avg (weighted): 148 PPM

Dataset updated March 9, 20261 matched water system in the city rollupIndividual systems and ZIPs can differ. Methodology

System used for this reading
Naperville
IL0434670
Water source: surface water
Serves: 156,406
USGS environmental estimate: 236 PPM
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 verified treated-water source
1 matched system total for this city; treated-water reports are prioritized when available.
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 Manlius

These systems are matched to Manlius, IL. 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.
Naperville
IL0434670
Moderately Hard
148 PPMsurface water156,406 servedVerified — Annual Water Quality Report
Source water: 236 PPM

Zip Codes in Manlius, IL

What This Means For You

Recommendations are based on the displayed hardness reading. Confirm your tap reading before sizing or buying treatment equipment.

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If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Manlius, IL.

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Frequently Asked Questions

How hard is the water in Manlius, IL?

The citywide weighted average water hardness in Manlius, IL is 148 PPM (8.7 GPG), classified as moderately hard. This is based on 1 matched water system.

Do I need a water softener in Manlius, IL?

With a citywide average hardness of 148 PPM, a water softener is worth considering for homes in Manlius. Confirm your tap reading before sizing equipment.

Is hard water in Manlius, 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 Manlius, IL?

Manlius, Illinois is served by 1 matched water system across 1 zip code.

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