WATERLOO WATERWORKS
Wisconsin — Community Water System — PWSID: WI1280115
System Information
| PWSID | WI1280115 |
| System Name | WATERLOO 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 | WATERLOO |
| ZIP Code | 53594-1459 |
| Address | 575 COMMERCIAL AVE |
| Organization | SORENSON, BARRY |
| Phone | — |
Population & Service
| Population Served | 3,520 |
| Service Connections | 1,303 |
Drinking Water Violations (37)
This water system has 37 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 | Nov 2, 2023 | Lead and Copper Rule |
| Oct 1, 2023 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 2, 2023 | Lead and Copper Rule |
| Oct 1, 2019 | Nov 24, 2020 | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Nov 24, 2020 | Lead and Copper Rule |
| Oct 1, 2019 | Nov 24, 2020 | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Nov 24, 2020 | Lead and Copper Rule |
| Oct 1, 2019 | Nov 24, 2020 | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Nov 24, 2020 | Lead and Copper Rule |
| Oct 1, 2019 | Nov 24, 2020 | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Nov 24, 2020 | Lead and Copper Rule |
| Jan 1, 2018 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Jan 16, 2018 | Lead and Copper Rule |
| Jan 1, 2018 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 1, 2018 | Lead and Copper Rule |
| Jan 1, 2018 | Oct 18, 2018 | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Oct 18, 2018 | Lead and Copper Rule |
| Jan 1, 2018 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Jan 16, 2018 | Lead and Copper Rule |
| Jan 1, 2018 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Jan 16, 2018 | Lead and Copper Rule |
| Jan 1, 2018 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Jan 16, 2018 | Lead and Copper Rule |
| Jan 1, 2018 | Oct 18, 2018 | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Oct 18, 2018 | Lead and Copper Rule |
| Jan 1, 2018 | Oct 18, 2018 | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Oct 18, 2018 | Lead and Copper Rule |
| Jan 1, 2018 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 1, 2018 | Lead and Copper Rule |
| Jun 1, 2017 | Nov 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 30, 2017 | Lead and Copper Rule |
| Jun 1, 2017 | Nov 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 30, 2017 | Lead and Copper Rule |
| Jun 1, 2017 | Nov 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 30, 2017 | Lead and Copper Rule |
| Jun 1, 2017 | Nov 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 30, 2017 | Lead and Copper Rule |
| Jun 1, 2017 | Nov 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 30, 2017 | Lead and Copper Rule |
| Jun 1, 2017 | Nov 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 30, 2017 | Lead and Copper Rule |
| Jun 1, 2017 | Nov 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 30, 2017 | Lead and Copper Rule |
| Jun 1, 2017 | Nov 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 30, 2017 | Lead and Copper Rule |
| Jun 1, 2017 | Nov 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 30, 2017 | Lead and Copper Rule |
| Jun 1, 2017 | Nov 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 30, 2017 | Lead and Copper Rule |
| Jun 1, 2017 | Nov 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 30, 2017 | Lead and Copper Rule |
| Jun 1, 2017 | Nov 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 30, 2017 | Lead and Copper Rule |
| Jul 1, 2007 | — | Public Notice | Other | No | No | — | — | — | Resolved | Feb 22, 2011 | Public Notice Rule and Revised PN Rule |
| Jan 1, 2006 | Dec 31, 2006 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 31, 2006 | Lead and Copper Rule |
| Sep 1, 1993 | Sep 30, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 1993 | Total Coliform Rule |
| Sep 1, 1993 | Sep 30, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 1993 | Total Coliform Rule |
| Sep 1, 1993 | Sep 30, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 1993 | Total Coliform Rule |
| Sep 1, 1993 | Sep 30, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 1993 | Total Coliform Rule |
| Aug 1, 1993 | Aug 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 25, 1993 | Total Coliform Rule |
| Aug 1, 1993 | Aug 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 25, 1993 | Total Coliform Rule |
| Aug 1, 1993 | Aug 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 25, 1993 | Total Coliform Rule |
| Aug 1, 1993 | Aug 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 25, 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.