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City water profile

Normal water quality

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

Median indexed hardness

308PPM

One indexed ZIP

Range 307.5–307.5 PPM

State comparison
23 PPM above
State hardness rank
#291 of 913
Matched utilities
3
Active health records
1

City summary

What the indexed records say

Normal has 1 published ZIP profile across Mclean County. The indexed median is 308 PPM, compared with 285 PPM across Illinois.

Among the 913 Illinoiscities with an indexed median, Normal ranks #291from 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.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard1 ZIP

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
19.6 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: May 22, 2017 to Jul 30, 2025.

ZIP directory

Water reports in Normal

Open a ZIP for site-level provenance and measurements.

ZIP code

61761

Very Hard

307.5 PPM

Nearest site
19.6 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Normal

PWSID IL1130900

Groundwater
System population served
52,736
Last reported
May 27, 2026

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

Illinois State University-Normal

PWSID IL1135510

Groundwater
System population served
6,600
Last reported
May 27, 2026

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

North Meadow Village Mhp

PWSID IL1130060

Groundwater
System population served
495
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

1 unique active health-based record appears among associated systems. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
Lead and Copper RuleIL1130060Oct 1, 2025Unaddressed
Public NoticeIL1130060Aug 22, 2025Unaddressed
LEAD AND COPPER RULE REVISIONSIL1130060Jul 2, 2025Unaddressed
Consumer Confidence RuleIL1130060Jul 1, 2025Unaddressed
Public NoticeIL1130060Jan 26, 2025Resolved
Public NoticeIL1130060Jan 26, 2025Resolved
LEAD AND COPPER RULE REVISIONSIL1130060Oct 17, 2024Unaddressed · health-based
LEAD AND COPPER RULE REVISIONSIL1130060Oct 17, 2024Unaddressed
Consumer Confidence RuleIL1130060Jul 1, 2024Unaddressed
Revised Total Coliform RuleIL1130060Dec 1, 2023Resolved

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 Normal

Is the water hard?

The indexed city median is 308 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.