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Calumet City, IL Tap Water Quality 2026

Water quality report for Calumet City, IL — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Calumet City's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Calumet City PWSID: IL0310390 Updated: 2026 Q2
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1 violation currently open

Lead is 12.40 ppb, 83% of the action level. No PFAS was detected.

D

Calumet City earns a D for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: 12.40 ppb — 83% of the federal action level
PFAS tested, none detected
11 violations since 2015, 2 health-based
1 violation currently open
Calumet City's lead level vs. all Illinois community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 12.40 ppb — 83% of the federal action level
✓ Lower lead than 4% of Illinois utilities
Population Served
32469
~9832 connections
Water Source
Surface water
Purchased from another system — SDWIS source code SWP
Active Violations
1
1 open of 11 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
83% of EPA action level
12.40 ppb
Action level: 15 ppb
The 90th-percentile lead result is 12.40 ppb, 83% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Public Notice OTHER — — 2025 Unaddressed
Consumer Confidence Rule OTHER — — 2025 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Resolved
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Unaddressed
Consumer Confidence Rule OTHER — — 2023 Resolved
Consumer Confidence Rule OTHER — — 2022 Resolved
Revised Total Coliform Rule MCL EXCEEDANCE — — 2019 Resolved
Consumer Confidence Rule OTHER — — 2018 Resolved
Consumer Confidence Rule OTHER — — 2017 Resolved
Consumer Confidence Rule OTHER — — 2016 Resolved
Consumer Confidence Rule OTHER — — 2015 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

1 violation remains open, out of 11 recorded since 2015 (2 health-based).

About the Main Water System

Utility Calumet City
PWSID IL0310390
Water source Surface water — Purchased from another system — SDWIS source code SWP
Population served 32,469
Service connections 9,832
Systems serving this area 5
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Calumet City tap water safe to drink? ▼
No federal limit is exceeded on record. 1 violation(s) remain open. Lead is 12.40 ppb, 83% of the action level.
Does Calumet City water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Calumet City? ▼
Calumet City (PWSID IL0310390), one of 5 systems serving this area. Surface water. Purchased from another system — SDWIS source code SWP
When was this system last inspected? ▼
It was last inspected on 2024-05-28. Inspectors recorded 2 significant deficiencies.

What Should Calumet City Residents Do?

1
Consider a filter certified for lead
Look for NSF/ANSI 53 certification for lead reduction.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Follow the open violation
This system has an unresolved violation. Contact the supplier for its corrective-action schedule.

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