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Water Hardness in 61523

Chillicothe, Illinois · Peoria County

189 PPM
11 GPG
Hard
0Soft60120180300+
Verified — Annual Water Quality Report

Dataset updated March 9, 2026Matched to 5 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology

Source context

How this ZIP reading is built

This ZIP reading is built from 5 matched water systems. When more than one system is matched, the displayed value is weighted toward larger known service populations when that data is available.

Source basis
1 verified treated-water source
5 matched systems total for this ZIP; 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 Serving 61523

These are the systems matched to this ZIP code. The displayed ZIP value is weighted toward larger known service populations when population data is available.

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.
Il American-Peoria
IL1435030
Moderately Hard
170 PPMsurface water137,575 servedVerified — Annual Water Quality Report
Source water: 207 PPM
Chillicothe
IL1430200
Very Hard
600 PPMgroundwater5,996 servedHigh Confidence — USGS Monitoring
Fawn Hills Subdivision
IL1435170
Very Hard
600 PPMgroundwater183 servedHigh Confidence — USGS Monitoring
Santa Fe Estates Water Association
IL1435490
Very Hard
600 PPMgroundwater68 servedHigh Confidence — USGS Monitoring
Buffalo Hollow Farms Water Assoc
IL1430080
Very Hard
600 PPMgroundwater45 servedHigh Confidence — USGS Monitoring

Nearby Zip Codes

615261706155217061479300615251726156560061548580615452146161418861570214615402146142433961559172

What This Means For You

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

Hard Water - Treatment Recommended

Your water is hard. Scale buildup is likely affecting your plumbing and appliances, reducing their lifespan and efficiency. A water softener is recommended to protect your home.

Recommended Products

Salt-Based Water Softener
Our PickAFWFilters Fleck 5600SXT 48KAlso GreatWhirlpool WHES40E 40KAlso GreatAFWFilters 64K GrainAlso GreatAFWFilters Iron Pro 2 64KAlso GreatSpringWell Filter + Softener Combo
Salt-Free Water Conditioner
Our PickSpringWell Salt-Free Cartridge
Water Hardness Test Kit
Our PickVarify (150 Strips)Also GreatJNW Direct (150 Strips)
Shower Head Filter
Our PickWeddell DuoAlso GreatAquaBliss SF100Also GreatSprite Pure 7-SettingAlso GreatAqua Earth 20-Stage
Water Softener Salt
Our PickMorton Clean & ProtectAlso GreatDiamond Crystal Bright & Soft

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 Chillicothe, IL (61523).

Submit Your Data

Frequently Asked Questions

Is the water hard in Chillicothe, IL (61523)?

The average water hardness in 61523 is 189 PPM (11 GPG), which is classified as hard.

Do I need a water softener in 61523?

With hardness of 189 PPM, a water softener is recommended for homes in 61523.

Is hard water in 61523 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 61523?

Zip code 61523 in Chillicothe, Illinois is served by 5 water systems.

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