DEERFIELD
Illinois — Community Water System — PWSID: IL0974340
System Information
| PWSID | IL0974340 |
| System Name | DEERFIELD |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| 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 | DEERFIELD |
| ZIP Code | 60015 |
| Address | 465 ELM ST. |
| Organization | PHILLIPS, ROBERT W. |
| Phone | 847-317-2490 |
Population & Service
| Population Served | 19,196 |
| Service Connections | 6,281 |
Drinking Water Violations (40)
This water system has 40 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2025 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Unaddressed | — | Consumer Confidence Rule |
| Jan 1, 2025 | Mar 31, 2025 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Mar 31, 2025 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2025 | Mar 31, 2025 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Mar 31, 2025 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2025 | Mar 31, 2025 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Mar 31, 2025 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2025 | Mar 31, 2025 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Mar 31, 2025 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2025 | Mar 31, 2025 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Mar 31, 2025 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2025 | Mar 31, 2025 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Mar 31, 2025 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2025 | Mar 31, 2025 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Mar 31, 2025 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2025 | Mar 31, 2025 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Mar 31, 2025 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 10, 2023 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 1, 2024 | Consumer Confidence Rule |
| Jul 10, 2023 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 1, 2024 | Consumer Confidence Rule |
| Jul 1, 2022 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 1, 2024 | Consumer Confidence Rule |
| Jul 1, 2022 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 1, 2024 | Consumer Confidence Rule |
| Jul 1, 2019 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 19, 2019 | Consumer Confidence Rule |
| Jul 1, 2019 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 19, 2019 | Consumer Confidence Rule |
| Jul 1, 2018 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 19, 2019 | Consumer Confidence Rule |
| Jul 1, 2018 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 19, 2019 | Consumer Confidence Rule |
| Jul 1, 2014 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jun 29, 2015 | Consumer Confidence Rule |
| Jul 1, 2014 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jun 29, 2015 | Consumer Confidence Rule |
| Aug 1, 2013 | Aug 31, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2013 | Total Coliform Rule |
| Aug 1, 2013 | Aug 31, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2013 | Total Coliform Rule |
| Aug 1, 2013 | Aug 31, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2013 | Total Coliform Rule |
| Aug 1, 2013 | Aug 31, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2013 | Total Coliform Rule |
| Aug 1, 2013 | Aug 31, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2013 | Total Coliform Rule |
| Aug 1, 2013 | Aug 31, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2013 | Total Coliform Rule |
| Aug 1, 2013 | Aug 31, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2013 | Total Coliform Rule |
| Aug 1, 2013 | Aug 31, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2013 | Total Coliform Rule |
| Aug 1, 2013 | Aug 31, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2013 | Total Coliform Rule |
| Aug 1, 2013 | Aug 31, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2013 | Total Coliform Rule |
| Oct 1, 2005 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 14, 2006 | Lead and Copper Rule |
| Oct 1, 2005 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 14, 2006 | Lead and Copper Rule |
| Oct 1, 2005 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 14, 2006 | Lead and Copper Rule |
| Oct 1, 2005 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 14, 2006 | Lead and Copper Rule |
| Apr 1, 2005 | Apr 30, 2005 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Apr 30, 2005 | Interim and Long Term 1 Enhanced Surface Water Treatment Rule |
| Apr 1, 2005 | Apr 30, 2005 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Apr 30, 2005 | Interim and Long Term 1 Enhanced Surface Water Treatment Rule |
| Apr 1, 2005 | Apr 30, 2005 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Apr 30, 2005 | Interim and Long Term 1 Enhanced Surface Water Treatment Rule |
| Apr 1, 2005 | Apr 30, 2005 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Apr 30, 2005 | Interim and Long Term 1 Enhanced Surface Water Treatment Rule |
| Dec 7, 1992 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Dec 28, 1993 | Lead and Copper Rule |
| Dec 7, 1992 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Dec 28, 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.