WATERTOWN WATERWORKS
Wisconsin — Community Water System — PWSID: WI1280044
System Information
| PWSID | WI1280044 |
| System Name | WATERTOWN 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 | WATERTOWN |
| ZIP Code | 53094 |
| Address | 800 HOFFMANN DRIVE |
| Organization | HARTZ, PETER |
| Phone | — |
Population & Service
| Population Served | 23,945 |
| Service Connections | 8,708 |
Drinking Water Violations (20)
This water system has 20 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2024 | Dec 31, 2024 | Total Haloacetic Acids (HAA5) | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2024 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2024 | Dec 31, 2024 | Total Haloacetic Acids (HAA5) | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2024 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2024 | Dec 31, 2024 | Total Haloacetic Acids (HAA5) | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2024 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2024 | Dec 31, 2024 | Total Haloacetic Acids (HAA5) | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2024 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2024 | Dec 31, 2024 | TTHM | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2024 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2024 | Dec 31, 2024 | TTHM | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2024 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2024 | Dec 31, 2024 | TTHM | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2024 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2024 | Dec 31, 2024 | TTHM | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2024 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2004 | Jul 31, 2004 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 30, 2004 | Total Coliform Rule |
| Jul 1, 2004 | Jul 31, 2004 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 30, 2004 | Total Coliform Rule |
| Jul 1, 2004 | Jul 31, 2004 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 30, 2004 | Total Coliform Rule |
| Jul 1, 2004 | Jul 31, 2004 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 30, 2004 | Total Coliform Rule |
| Jul 1, 2004 | Jul 31, 2004 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 30, 2004 | Total Coliform Rule |
| Dec 1, 2001 | Dec 31, 2001 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2001 | Total Coliform Rule |
| Dec 1, 2001 | Dec 31, 2001 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2001 | Total Coliform Rule |
| Dec 1, 2001 | Dec 31, 2001 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2001 | Total Coliform Rule |
| Dec 1, 2001 | Dec 31, 2001 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2001 | Total Coliform Rule |
| Dec 1, 2001 | Dec 31, 2001 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2001 | Total Coliform Rule |
| Dec 1, 2001 | Dec 31, 2001 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2001 | Total Coliform Rule |
| Aug 1, 1997 | Aug 31, 1997 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 1997 | 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.