Skip to content

City water profile

Carterville water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Carterville, Illinois.

Median indexed hardness

165PPM

One indexed ZIP

Range 164.5–164.5 PPM

State comparison
120 PPM below
State hardness rank
#894 of 913
Matched utilities
3
Active health records
0

City summary

What the indexed records say

Carterville has 1 published ZIP profile across Williamson County. The indexed median is 165 PPM, compared with 285 PPM across Illinois.

Among the 913 Illinoiscities with an indexed median, Carterville ranks #894from highest to lowest. Across all 1,065 state ZIP profiles, available estimates run from 115to 408 PPM.

Because only one ZIP is represented, the city median and range are the same local estimate. It should not be read as multiple independent samples across the community. At least one estimate is marked low confidence, so observation distance and date deserve extra attention.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard0 ZIPs
Hard1 ZIP
Very hard0 ZIPs

1 of 1 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
42 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Jan 4, 2016 to May 28, 2026.

ZIP directory

Water reports in Carterville

Open a ZIP for site-level provenance and measurements.

ZIP code

62918

Hard

164.5 PPM

Nearest site
42 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Carterville

PWSID IL1990150

Surface water
System population served
6,528
Last reported
May 27, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Blairsville Pwd

PWSID IL1995350

Surface water
System population served
807
Last reported
May 27, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

The Orchards Mhc

PWSID IL1990120

Surface water
System population served
253
Last reported
May 27, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Compliance history

What EPA records show

No active health-based violation appears among the associated systems in the represented EPA reporting quarter. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
TTHMIL1995350Jan 1, 2026Archived
Total Haloacetic Acids (HAA5)IL1995350Jan 1, 2026Archived
Long Term 2 Enhanced Surface Water Treatment RuleIL1995350Dec 1, 2025Archived · health-based
Lead and Copper RuleIL1995350Oct 1, 2025Unaddressed
TTHMIL1990150Apr 1, 2025Resolved
Total Haloacetic Acids (HAA5)IL1990150Apr 1, 2025Resolved
Public NoticeIL1995350Jan 31, 2025Resolved
Public NoticeIL1995350Oct 7, 2024Resolved
Consumer Confidence RuleIL1990150Jul 1, 2024Resolved
CARBON, TOTALIL1995350Jul 1, 2024Resolved · health-based

Practical next steps

Move from index to evidence

  1. 1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
  2. 2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
  3. 3. Test the tap when needed. Confirm health concerns or treatment sizing with the right method.

Questions people ask

About water in Carterville

Is the water hard?

The indexed city median is 165 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.

Is the tap water safe?

Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.

Do I need treatment?

Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.