WESTPORT WATER UTILITY
Wisconsin — Community Water System — PWSID: WI1132442
System Information
| PWSID | WI1132442 |
| System Name | WESTPORT WATER UTILITY |
| 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 | Feb 27, 1995 |
| Last Reported | Dec 17, 2025 |
Location & Contact
| State | Wisconsin |
| City | WAUNAKEE |
| ZIP Code | 53597 |
| Address | 5387 MARY LAKE RD |
| Organization | WESTPORT WATER UTILITY - DEAN GROSSKOPF |
| Phone | — |
Population & Service
| Population Served | 800 |
| Service Connections | 399 |
Drinking Water Violations (17)
This water system has 17 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, 2021 | Dec 31, 2021 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Archived | Dec 31, 2021 | Nitrate Rule |
| Jan 1, 2021 | Dec 31, 2021 | Total Haloacetic Acids (HAA5) | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2021 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2021 | Dec 31, 2021 | Total Haloacetic Acids (HAA5) | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2021 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2021 | Dec 31, 2021 | Total Haloacetic Acids (HAA5) | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2021 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2021 | Dec 31, 2021 | Total Haloacetic Acids (HAA5) | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2021 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2021 | Dec 31, 2021 | TTHM | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2021 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2021 | Dec 31, 2021 | TTHM | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2021 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2021 | Dec 31, 2021 | TTHM | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2021 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2021 | Dec 31, 2021 | TTHM | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2021 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2021 | Dec 31, 2021 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Archived | Dec 31, 2021 | Nitrate Rule |
| Jan 1, 2021 | Dec 31, 2021 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Archived | Dec 31, 2021 | Nitrate Rule |
| Jan 1, 2021 | Dec 31, 2021 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Archived | Dec 31, 2021 | Nitrate Rule |
| Jan 1, 2021 | Dec 31, 2021 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Archived | Dec 31, 2021 | Nitrate Rule |
| Jan 1, 2021 | Dec 31, 2021 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Archived | Dec 31, 2021 | Nitrate Rule |
| Jan 1, 2012 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Unaddressed | — | Lead and Copper Rule |
| Jan 1, 2012 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Unaddressed | — | Lead and Copper Rule |
| Jan 1, 2012 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Unaddressed | — | Lead and Copper 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.