DEFOREST WATERWORKS
Wisconsin — Community Water System — PWSID: WI1130221
System Information
| PWSID | WI1130221 |
| System Name | DEFOREST WATERWORKS |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 28, 1981 |
| Last Reported | Dec 17, 2025 |
Location & Contact
| State | Wisconsin |
| City | DEFOREST |
| ZIP Code | 53532-0510 |
| Address | 120 S STEVENSON ST |
| Organization | BLAU, JUDD - PUBLIC SERVICES DIR |
| Phone | — |
Population & Service
| Population Served | 10,500 |
| Service Connections | 3,888 |
Drinking Water Violations (14)
This water system has 14 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 17, 2024 | — | LEAD AND COPPER RULE REVISIONS | TT | Yes | No | — | — | — | Resolved | Jun 4, 2025 | Lead and Copper Rule Revisions |
| Oct 17, 2024 | — | Public Notice | Other | No | No | — | — | — | Unaddressed | — | Public Notice Rule and Revised PN Rule |
| Jun 1, 1993 | Jun 30, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 24, 1993 | Total Coliform Rule |
| Jun 1, 1993 | Jun 30, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 24, 1993 | Total Coliform Rule |
| Jun 1, 1993 | Jun 30, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 24, 1993 | Total Coliform Rule |
| Jun 1, 1993 | Jun 30, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 24, 1993 | Total Coliform Rule |
| Apr 1, 1993 | Apr 30, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 1993 | Total Coliform Rule |
| Apr 1, 1993 | Apr 30, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 1993 | Total Coliform Rule |
| Apr 1, 1993 | Apr 30, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 1993 | Total Coliform Rule |
| Apr 1, 1993 | Apr 30, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 1993 | Total Coliform Rule |
| Mar 1, 1993 | Mar 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Mar 8, 1993 | Total Coliform Rule |
| Mar 1, 1993 | Mar 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Mar 8, 1993 | Total Coliform Rule |
| Mar 1, 1993 | Mar 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Mar 8, 1993 | Total Coliform Rule |
| Mar 1, 1993 | Mar 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Mar 8, 1993 | Total Coliform 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.