Water Around

PUBLIC WATER SYSTEM

Chicago Department of Water Management

Water testing, compliance records and water sources for this system. Check your utility bill to confirm your provider.

IL0316000Open in the atlas →

Public drinking-water record

Drinking-water testing

Chicago Department of Water Management · IL0316000. These are public water-system records, not a test of the tap water at your home.

PFAS testing

No PFAS detection above the reporting limit in these results. Most recent PFAS sample shown here: .

PFOA

Not detected above reporting limit

Sample date
Reporting limit
0.004 µg/L
Sample ID
810-123489-1

PFOS

Not detected above reporting limit

Sample date
Reporting limit
0.004 µg/L
Sample ID
810-123495-1

Selected latest compound samples from the published federal system record. Multiple sample points may share a date. A detection does not establish a violation. A non-detection does not mean PFAS-free. PFOA and PFOS limits and regulatory context are separate from these historical samples.

Lead and copper

Lead: 0.007 mg/L, period ending 2026-06-30. These are system 90th-percentile results, not individual household concentrations.

Drinking-water compliance

No current violations flagged; past records available. 0 current flags and 55 historical records in the federal publication dated September 1, 2026. Historical records are not all active violations.

EPA UCMR5 source and sampling program · EPA ECHO compliance and lead/copper records

Drinking water & contaminants

Drinking-water testing and compliance

Compliance records, PFAS sampling, and lead and copper results answer different questions. None is a test of a particular home's faucet.

Recency unconfirmed · Date unavailableEPA ECHO / SDWIS federal snapshot

The source does not provide a publication date. The last check date is not recorded. This report may not describe conditions today.

EPA ECHO / SDWIS · 2026 Q2 snapshot

No current violations flagged; past records available

This means no current violation is flagged in this snapshot. It does not prove that every tap is contaminant-free.

People served
2,721,308
Historical records
55
Source type
Surface water
Compliance history

55 violation records

Federal and primacy-agency regulatory history reported in EPA ECHO/SDWIS; not a household tap-water test.

PFAS / UCMR5

No PFAS detection above the reporting limit in these results

232 compound results in the 2023–2026 UCMR5 final release. Non-detection means not detected above the reporting limit in that sample—not that PFAS never occurs.

Lead & copper

21 system-level results

System-level lead/copper 90th-percentile reporting; not the lead or copper level at a particular faucet. This system-wide inventory does not identify the pipes at your address.

Consumer Confidence Report

Find your annual water-quality report

Your utility’s annual Consumer Confidence Report describes its water sources and testing results. Contact the utility for its latest report.

Learn about annual water-quality reports
See this system in Drinking Water mode →

Measurement coverage

No measurements available here

We do not have measurements to show for Chicago Department of Water Management in this section. Explore the connections below for related waters and water providers.

No measurement history available here

We do not have historical measurements to show for Chicago Department of Water Management. This does not mean it is unmonitored or that its water is safe or unsafe. You can still explore the information and source links on this page.

The local measurements below and the federal records above may cover different sites and dates. Some results may overlap, so do not add their counts together.

Rivers, lakes & drinking water

Local monitoring and source water

Explore river and lake assessments, measurements taken nearby, drinking-water tests and dams. Each tells you something different about the area.

Official surface-water assessments

Some assessed waters are impaired

9 EPA water assessments are linked to this local watershed (HUC12).

0 supporting9 impaired0 unknown
See assessed waters and official status
Counts are assessment-unit records associated with the HUC12. They are not area weighted and do not describe every waterbody.
Monitoring activity
390 sites608 observations1 characteristics

Water Quality Portal measurements from the surrounding area. More measurements can mean more monitoring—not worse water.

microbial 608
See recent measurement examples

Enterococcus132 CCE/100mL · 2025-09-01

Enterococcus54 CCE/100mL · 2025-09-01

Enterococcus12 CCE/100mL · 2025-09-01

Enterococcus544 CCE/100mL · 2025-09-01

Enterococcus253 CCE/100mL · 2025-09-01

Enterococcus43 CCE/100mL · 2025-09-01

This bounded discovery is not the complete historical record and absence is not evidence of clean water.
UCMR5 PFAS monitoring

0 reported detections

Across 240 compound results and 8 samples for this water system.

Detection is not the same as violation.A reported detection is not, by itself, a drinking-water violation or a statement about a household tap. EPA states UCMR results do not indicate compliance or noncompliance with PFAS MCLs.
Nearby dam inventory

116 nearby dam records

These dams are nearby, but may not supply your drinking water. Hazard potential describes the consequences of a failure; condition describes the dam itself.

Chicago River and Harbor Controlling Works →1.35 mi away · IL55094HazardHighConditionNot Available
Mayfair Reservoir Dam →13.84 mi away · IL55169HazardLowConditionNot Available
Lower Elmhurst Dam →14.93 mi away · IL50304HazardHighConditionNot Available
Fullersburg Dam →15.84 mi away · IL50289HazardLowConditionNot Available
Thomas J. O'Brien Lock and Controlling Works →15.94 mi away · IL01013HazardHighConditionNot Available
Nearby dams are geographic context only. No reservoir or municipal-supply link is inferred from proximity.

Water sources

Where the water comes from

Chicago Department of Water Management receives water from Lake Michigan, according to the source records.

The links show sources and suppliers, not the amount being delivered today. Select one for its source record.

Sources traced upstreamSource coverage does not measure water quality or reliability.

Your water system

Where it gets water

Sources and relationships as a list

Documented current sources or suppliers for Chicago Department of Water Management include Lake Michigan. A relationship does not by itself establish the current delivered amount.

  1. Chicago Department of Water Management draws from Lake Michigan. Current. The relationship is documented; a current delivered amount is not available.
Water source types explained

Surface waterWater drawn from rivers, lakes, or reservoirs.

GroundwaterWater pumped from aquifers—bodies of rock or sediment that store and transmit groundwater, not underground lakes.

Wholesale waterA regional supplier can supply your local provider without serving your household directly.

Imported waterYour drinking-water source basin can differ from the watershed where you live.

Connected water system

Lake MichiganlakeExplore →

Documented relationships

Related sources and systems

Lake Michigandraws from · direct source · high confidenceExplore →