LAKE FOREST
Illinois — Community Water System — PWSID: IL0970800
System Information
| PWSID | IL0970800 |
| System Name | LAKE FOREST |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 13, 1981 |
| Last Reported | Dec 4, 2025 |
Location & Contact
| State | Illinois |
| City | LAKE FOREST |
| ZIP Code | 60045 |
| Address | 1441 Lake Rd. |
| Organization | TIEGS, MICHAEL L. |
| Phone | 847-810-4651 |
Population & Service
| Population Served | 19,642 |
| Service Connections | 6,925 |
Drinking Water Violations (21)
This water system has 21 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2023 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 28, 2024 | Lead and Copper Rule |
| Oct 1, 2023 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 28, 2024 | Lead and Copper Rule |
| Oct 1, 2023 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 28, 2024 | Lead and Copper Rule |
| Oct 1, 2023 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 28, 2024 | Lead and Copper Rule |
| Feb 1, 2019 | Apr 30, 2019 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Apr 30, 2019 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Feb 1, 2019 | Apr 30, 2019 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Apr 30, 2019 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Feb 1, 2019 | Apr 30, 2019 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Apr 30, 2019 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Feb 1, 2019 | Apr 30, 2019 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Apr 30, 2019 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Feb 1, 2019 | Apr 30, 2019 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Apr 30, 2019 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Feb 1, 2019 | Apr 30, 2019 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Apr 30, 2019 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Feb 1, 2019 | Apr 30, 2019 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Apr 30, 2019 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Feb 1, 2019 | Apr 30, 2019 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Apr 30, 2019 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2017 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 3, 2018 | Consumer Confidence Rule |
| Jul 1, 2017 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 3, 2018 | Consumer Confidence Rule |
| Jul 1, 2004 | Sep 30, 2004 | CARBON, TOTAL | MR | No | Yes | — | TT | — | Resolved | Aug 16, 2004 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2004 | Sep 30, 2004 | CARBON, TOTAL | MR | No | Yes | — | TT | — | Resolved | Aug 16, 2004 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2004 | Sep 30, 2004 | CARBON, TOTAL | MR | No | Yes | — | TT | — | Resolved | Aug 16, 2004 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2004 | Sep 30, 2004 | CARBON, TOTAL | MR | No | Yes | — | TT | — | Resolved | Aug 16, 2004 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 1994 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Feb 5, 1995 | Lead and Copper Rule |
| Dec 7, 1992 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Aug 30, 1993 | Lead and Copper Rule |
| Jun 30, 1977 | Jun 29, 1981 | Gross Alpha, Excl. Radon and U | MR | No | No | — | 15 pCi/L | — | Archived | Jun 29, 1981 | Radionuclides and Revised Rad Rule |
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.