Where does the water in 61559 come from?

Water for zip code 61559 in Princeville, Illinois is provided by 2 water systems. Contact your local utility for specific source information, or check our detailed page for your area.

Water Hardness in 61559

Princeville, Illinois · Peoria County

172 PPM

10.1 GPG

Moderately Hard

0Soft60120180300+

Verified - Annual Water Quality Report

Dataset updated March 9, 2026Matched to 2 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 2 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

2 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 61559

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.

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.

Water System	Source	Hardness	Pop. Served	Data Source
Il American-Peoria IL1435030	surface water	170 PPM Moderately Hard USGS estimate: 207 PPM	137,575	Verified - Annual Water Quality Report
Princeville IL1430750	groundwater	339 PPM Very Hard	1,901	High Confidence - USGS Monitoring

Il American-Peoria

IL1435030

Moderately Hard

170 PPMsurface water137,575 servedVerified - Annual Water Quality Report

Source water: 207 PPM

Princeville

IL1430750

Very Hard

339 PPMgroundwater1,901 servedHigh Confidence - USGS Monitoring

Nearby Zip Codes

61525172 61517170 61526170 61451170 61479300 61491339 61528170 61483339 61529170 61523189 61615170 61552170

What This Means For You

Use this ZIP 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.

Methodology Data sources 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 Princeville, IL (61559).

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Frequently Asked Questions

Is the water hard in Princeville, IL (61559)?

The average water hardness in 61559 is 172 PPM (10.1 GPG), which is classified as moderately hard.

Do I need a water softener in 61559?

With hardness of 172 PPM, a water softener is worth considering for homes in 61559.

Is hard water in 61559 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 61559?

Zip code 61559 in Princeville, Illinois is served by 2 water systems.