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Joliet

Published drinking-water records and contacts for Joliet. System IL1970450. Review sources and dates; not a real-time water assessment.

System ID
IL1970450
State or territory
IL
Published population served
160000
System type (source code)
CWS

Published records and dates

Missing records here do not mean the provider did not test. Published records are not a real-time assessment of your tap water.

Published testing results

Selected recent records are shown below. Different sampling locations and dates are not interchangeable. These excerpts are not a complete testing history.

“<” means below the stated reporting limit, not zero. A reported measurement alone is not a safety verdict. Read an example

EPA UCMR 5 — most recent imported sample per substance
SubstancePublished resultReporting limitSample dateSampling location
11Cl-PF3OUdS< 0.005 µg/L0.005 µg/L2025-08-14TP 11 (Well 15D) / TP11
4:2 FTS< 0.003 µg/L0.003 µg/L2025-08-14TP 11 (Well 15D) / TP11
6:2 FTS< 0.005 µg/L0.005 µg/L2025-08-14TP 11 (Well 15D) / TP11
8:2 FTS< 0.005 µg/L0.005 µg/L2025-08-14TP 11 (Well 15D) / TP11
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2025-08-14TP 11 (Well 15D) / TP11
ADONA< 0.003 µg/L0.003 µg/L2025-08-14TP 11 (Well 15D) / TP11
HFPO-DA< 0.005 µg/L0.005 µg/L2025-08-14TP 11 (Well 15D) / TP11
NEtFOSAA< 0.005 µg/L0.005 µg/L2025-08-14TP 11 (Well 15D) / TP11
NFDHA< 0.02 µg/L0.02 µg/L2025-08-14TP 11 (Well 15D) / TP11
NMeFOSAA< 0.006 µg/L0.006 µg/L2025-08-14TP 11 (Well 15D) / TP11
PFBA< 0.005 µg/L0.005 µg/L2025-08-14TP 11 (Well 15D) / TP11
PFBS< 0.003 µg/L0.003 µg/L2025-08-14TP 11 (Well 15D) / TP11
PFDA< 0.003 µg/L0.003 µg/L2025-08-14TP 11 (Well 15D) / TP11
PFDoA< 0.003 µg/L0.003 µg/L2025-08-14TP 11 (Well 15D) / TP11
PFEESA< 0.003 µg/L0.003 µg/L2025-08-14TP 11 (Well 15D) / TP11
PFHpA< 0.003 µg/L0.003 µg/L2025-08-14TP 11 (Well 15D) / TP11
PFHpS< 0.003 µg/L0.003 µg/L2025-08-14TP 11 (Well 15D) / TP11
PFHxA< 0.003 µg/L0.003 µg/L2025-08-14TP 11 (Well 15D) / TP11
PFHxS< 0.003 µg/L0.003 µg/L2025-08-14TP 11 (Well 15D) / TP11
PFMBA< 0.003 µg/L0.003 µg/L2025-08-14TP 11 (Well 15D) / TP11
PFMPA< 0.004 µg/L0.004 µg/L2025-08-14TP 11 (Well 15D) / TP11
PFNA< 0.004 µg/L0.004 µg/L2025-08-14TP 11 (Well 15D) / TP11
PFOA< 0.004 µg/L0.004 µg/L2025-08-14TP 11 (Well 15D) / TP11
PFOS< 0.004 µg/L0.004 µg/L2025-08-14TP 11 (Well 15D) / TP11
PFPeA< 0.003 µg/L0.003 µg/L2025-08-14TP 11 (Well 15D) / TP11
PFPeS< 0.004 µg/L0.004 µg/L2025-08-14TP 11 (Well 15D) / TP11
PFTA< 0.008 µg/L0.008 µg/L2025-08-14TP 11 (Well 15D) / TP11
PFTrDA< 0.007 µg/L0.007 µg/L2025-08-14TP 11 (Well 15D) / TP11
PFUnA< 0.002 µg/L0.002 µg/L2025-08-14TP 11 (Well 15D) / TP11
lithium33.4 µg/L9 µg/L2025-08-14TP 11 (Well 15D) / TP11

Download all EPA UCMR 5 records (CSV)

Lead and copper: 90th-percentile summaries

These describe a monitoring period across sampled locations, not the result at your home. How to read the 90th percentile

Eight most recent imported monitoring summaries
SubstancePublished 90th percentileMonitoring periodSource quarter
Lead (PB90) 0.00653 mg/L2026-01-01 – 2026-06-302026Q3
Lead (PB90) 0 mg/L2025-01-01 – 2025-12-312026Q3
Lead (PB90) 0.00903 mg/L2025-07-01 – 2025-12-312026Q3
Lead (PB90) 0 mg/L2025-01-01 – 2025-12-312026Q3
Lead (PB90) 0.0087 mg/L2025-01-01 – 2025-06-302026Q3
Lead (PB90) 0.00777 mg/L2024-07-01 – 2024-12-312026Q3
Lead (PB90) 0.00473 mg/L2024-01-01 – 2024-06-302026Q3
Lead (PB90) 0.00552 mg/L2023-07-01 – 2023-12-312026Q3

Published compliance history

16 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.

Twenty most recent imported compliance records
Rule / recordPeriodRecorded statusHealth-based (EPA classification)Source quarter
Stage 2 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP)2026-04-01 – 2026-06-30ArchivedNo2026Q3
Lead and Copper Rule Revisions / LSL Inventory2024-10-17 – —ResolvedYes2026Q3
Radionuclides and Revised Rad Rule / Monitoring, Regular2024-10-01 – 2024-12-31ResolvedNo2026Q3
Radionuclides and Revised Rad Rule / Monitoring, Regular2024-10-01 – 2024-12-31ResolvedNo2026Q3
Synthetic Organic Chemicals / Monitoring, Regular2023-01-01 – 2025-12-31ArchivedNo2026Q3
Synthetic Organic Chemicals / Monitoring, Regular2023-01-01 – 2025-12-31ArchivedNo2026Q3
Synthetic Organic Chemicals / Monitoring, Regular2023-01-01 – 2025-12-31ArchivedNo2026Q3
Synthetic Organic Chemicals / Monitoring, Regular2023-01-01 – 2025-12-31ArchivedNo2026Q3
Lead and Copper Rule / Follow-up Or Routine LCR Tap M/R2017-10-01 – —ResolvedNo2026Q3
Radionuclides and Revised Rad Rule / Monitoring, Regular2017-10-01 – 2017-12-31ResolvedNo2026Q3
Nitrate Rule / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3
Nitrate Rule / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3
Total Coliform Rule / Maximum Contaminant Level Violation, Acute (TCR)1996-05-01 – 1996-05-31ArchivedYes2026Q3
Total Coliform Rule / Monitoring, Repeat Minor (TCR)1995-09-01 – 1995-09-30ArchivedNo2026Q3
Total Coliform Rule / Maximum Contaminant Level Violation, Acute (TCR)1991-06-01 – 1991-06-30ArchivedYes2026Q3
Radionuclides and Revised Rad Rule / Monitoring, Regular1977-06-30 – 1981-06-29ArchivedNo2026Q3

Source dates and refresh checks

A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.

Administrative contact (EPA filing)

Swisher, Allison: 815-724-4222

An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.

Official state resources · How to read these records