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IL0316000

City of Chicago

Chicago, IL · 2,721,308 people served · Lake Michigan

Lead service linesNotice failed

This is the water system for 60614.

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You found City of Chicago.

Next, walk the first public testing door.

  1. Found system

  2. Public door

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Path score 67

Finished
1 of 3 steps closed.
Time
1 second to this point
Path
Short path
7.4
Official 90th percentile (ppb)
10
Certified household tests
13.6
Household median (ppb)
47
Household max (ppb)

Official 90th percentile is example data until the federal file is ingested.

How to get a test here

ProgramPays for a kit?Who can use it
LCRI consumer-requested tap samplingYesAnyone served by a lead, galvanized-requiring-replacement, or unknown service line
Local or state health department testingYesHouseholds, often with priority for children or pregnant people
WIIN school and child-care lead testingYesSchools and licensed child-care programs, via the state
Lead over time
Household lab results stay on a solid line. Official series is dashed.

The solid line is certified household tests.

The dashed line is the official 90th percentile.

Latest household test: 22.2 ppb.

Latest official 90th percentile: 7.4 ppb.

Where samples come from
Screening kits are visible and cannot start a cluster alert.

Official: 2 samples.

Certified lab: 11 samples.

Screening: 1 sample.

Household and official lead samples

DateSourceBlock groupLead (ppb)
2026-06-20screening1703108140016
2026-07-02lab170318320003.2
2026-07-08lab1703107010012.4
2026-07-11lab1703132010018
2026-07-15officialIL03160005
2026-07-18lab170310814006.1
2026-07-24lab1703142010022.7
2026-08-01lab170312409009.4
2026-08-06lab1703138010031.5
2026-08-14lab1703142060047
2026-08-15officialIL03160007.4
2026-08-19lab1703107010014.8
2026-08-27lab170318330008.2

What EPA shows today

The daily EPA pull has not landed for this system yet.

What crossed a bar

Watch

2026-07-08

A certified kitchen tap in Chicago tested at or above 10 ppb

12.4 ppb on 2026-07-08. This is a household lab result, not a utility finding.

Household cluster

2026-08-19

6 certified kitchen taps in Chicago were at or above 10 ppb

Those household tests sit inside 90 days. The highest was 47 ppb. This is not a utility exceedance.

Official record

2026-08-27

Chicago missed a required lead-pipe notice

Federal rule required notice to about 900,000 people by Nov 2024.

Watch this system

Set your own alert for this water system, not a ZIP.

We email you only when a test or required notice needs attention.

Stories

Public reporting