WH

Water Hardness in 61725

Carlock, Illinois · Mclean County

271 PPM
15.8 GPG
Very Hard
0Soft60120180300+
Verified - Annual Water Quality Report

Dataset updated March 9, 2026Matched to 4 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 4 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
3 verified treated-water sources
4 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 61725

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.

4 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.
Bloomington
IL1130200
Very Hard
270 PPMsurface water77,610 servedVerified - Annual Water Quality Report
Source water: 411 PPM
Normal
IL1130900
Very Hard
270 PPMgroundwater52,736 servedVerified - Annual Water Quality Report
Source water: 411 PPM
Bloomington Township Pwd West Phase
IL1130040
Very Hard
270 PPMsurface water1,800 servedVerified - Annual Water Quality Report
Source water: 307 PPM
Carlock
IL1130250
Very Hard
411 PPMgroundwater562 servedHigh Confidence - USGS Monitoring

Nearby Zip Codes

617293216174827261771321617322716174232161530459617384116176127061733171617012706175517661774270

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.

MethodologyData sourcesHow 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 Carlock, IL (61725).

Submit Your Data

Frequently Asked Questions

Is the water hard in Carlock, IL (61725)?

The average water hardness in 61725 is 271 PPM (15.8 GPG), which is classified as very hard.

Do I need a water softener in 61725?

With hardness of 271 PPM, a water softener is recommended for homes in 61725.

Is hard water in 61725 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 61725?

Zip code 61725 in Carlock, Illinois is served by 4 water systems.

Learn More About Your Water

How to Test Water Hardness at Home

Compare free lookups, soap tests, test strips, liquid drop kits, and lab tests for measuring water hardness.

8 min read

Water Hardness Scale: PPM and GPG Chart

Use the USGS water hardness scale to compare PPM, GPG, and mg/L levels from soft to very hard water.

10 min read

Well Water Hardness: Why It's Usually Hard & How to Treat It

Well water is almost always harder than city water. Learn why, how to test your well, and the best treatment options for hard well water.

8 min read