OAK LAWN
Illinois — Community Water System — PWSID: IL0312220
System Information
| PWSID | IL0312220 |
| System Name | OAK LAWN |
| System Type | Community |
| Water Source | Surface Water Purchased |
Location
| State | Illinois |
| City | — |
| County | — |
| ZIP Code | — |
Population
| Population Served | 58,362 |
Drinking Water Violations (29)
This water system has 29 violations recorded in the EPA SDWIS database.
| Date | Contaminant | Health-Based | Status | Rule |
|---|---|---|---|---|
| Jul 1, 2025 | Consumer Confidence Rule | Y | Unaddressed | Consumer Confidence Rule |
| Jul 1, 2023 | Consumer Confidence Rule | Y | Resolved | Consumer Confidence Rule |
| Jul 1, 2023 | Consumer Confidence Rule | Y | Resolved | Consumer Confidence Rule |
| Dec 30, 2022 | Lead and Copper Rule | Y | Resolved | Lead and Copper Rule |
| Dec 30, 2022 | Lead and Copper Rule | Y | Resolved | Lead and Copper Rule |
| Jul 1, 2016 | Consumer Confidence Rule | Y | Resolved | Consumer Confidence Rule |
| Jul 1, 2016 | Consumer Confidence Rule | Y | Resolved | Consumer Confidence Rule |
| Sep 1, 2015 | Coliform (TCR) | Y | Resolved | Total Coliform Rule |
| Sep 1, 2015 | Coliform (TCR) | Y | Resolved | Total Coliform Rule |
| Sep 1, 2015 | Coliform (TCR) | Y | Resolved | Total Coliform Rule |
| Sep 1, 2015 | Coliform (TCR) | Y | Resolved | Total Coliform Rule |
| Jul 1, 2015 | Chlorine | Y | Resolved | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2015 | Chlorine | Y | Resolved | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2015 | Chlorine | Y | Resolved | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2015 | Chlorine | Y | Resolved | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Sep 1, 2000 | Coliform (TCR) | Y | Archived | Total Coliform Rule |
| Sep 1, 2000 | Coliform (TCR) | Y | Archived | Total Coliform Rule |
| Aug 1, 1997 | Coliform (TCR) | Y | Archived | Total Coliform Rule |
| Aug 1, 1997 | Coliform (TCR) | Y | Archived | Total Coliform Rule |
| Jan 1, 1993 | Lead and Copper Rule | Y | Resolved | Lead and Copper Rule |
| Jan 1, 1993 | Lead and Copper Rule | Y | Resolved | Lead and Copper Rule |
| Jan 1, 1993 | Lead and Copper Rule | Y | Resolved | Lead and Copper Rule |
| Jan 1, 1993 | Lead and Copper Rule | Y | Resolved | Lead and Copper Rule |
| Jan 1, 1993 | Lead and Copper Rule | Y | Resolved | Lead and Copper Rule |
| Dec 7, 1992 | Lead and Copper Rule | Y | Resolved | Lead and Copper Rule |
| Dec 7, 1992 | Lead and Copper Rule | Y | Resolved | Lead and Copper Rule |
| — | N | — | — | |
| — | N | — | — | |
| — | N | — | — |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.