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City water profile

Bloomington water quality

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

Median indexed hardness

354PPM

3 indexed ZIPs

Range 354–354 PPM

State comparison
69 PPM above
State hardness rank
#83 of 913
Matched utilities
5
Active health records
0

City summary

What the indexed records say

Bloomington has 3 published ZIP profiles across Mclean County. The indexed median is 354 PPM, compared with 285 PPM across Illinois.

Among the 913 Illinoiscities with an indexed median, Bloomington ranks #83from highest to lowest. Across all 1,065 state ZIP profiles, available estimates run from 115to 408 PPM.

The 354–354 PPM range shows how much the available ZIP estimates vary within the city label. 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
Hard0 ZIPs
Very hard3 ZIPs

3 of 3 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
49.6 miles
Profiles with evidence
3/3

Confidence labels

High: 0Moderate: 0Low: 3

Observation window: Jul 5, 2022 to Jul 28, 2025.

ZIP directory

Water reports in Bloomington

Open a ZIP for site-level provenance and measurements.

ZIP code

61701

Very Hard

354 PPM

Nearest site
49.6 mi
Confidence
Low

View full ZIP evidence →

ZIP code

61704

Very Hard

354 PPM

Nearest site
52.1 mi
Confidence
Low

View full ZIP evidence →

ZIP code

61705

Very Hard

354 PPM

Nearest site
46.3 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Bloomington

PWSID IL1130200

Surface water
System population served
77,610
Last reported
May 27, 2026

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

Hilltop Mhp

PWSID IL1130080

Surface water
System population served
1,360
Last reported
May 27, 2026

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

Bloomington Township Pwd-Crestwicke

PWSID IL1135120

Surface water
System population served
900
Last reported
May 27, 2026

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

Blm Gw Mhp, Llc

PWSID IL1130210

Surface water
System population served
390
Last reported
May 27, 2026

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

Willow Creek North Mhp

PWSID IL1135130

Surface water
System population served
250
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
Public NoticeIL1130210Feb 21, 2026Unaddressed
Public NoticeIL1130210Feb 21, 2026Unaddressed
Public NoticeIL1130080Jan 15, 2026Unaddressed
Public NoticeIL1130080Jan 15, 2026Unaddressed
Lead and Copper RuleIL1130210Jan 1, 2026Unaddressed
Lead and Copper RuleIL1130080Oct 1, 2025Unaddressed
Public NoticeIL1130080Aug 22, 2025Unaddressed
Public NoticeIL1130210Aug 22, 2025Unaddressed
LEAD AND COPPER RULE REVISIONSIL1130200Jul 2, 2025Resolved
LEAD AND COPPER RULE REVISIONSIL1130080Jul 2, 2025Unaddressed

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 Bloomington

Is the water hard?

The indexed city median is 354 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.