OCONTO WATERWORKS
Wisconsin - Community Water System - PWSID: WI4430495
System Information
| PWSID | WI4430495 |
| System Name | OCONTO 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 | Mar 2, 2026 |
Location & Contact
| State | Wisconsin |
| City | OCONTO |
| ZIP Code | 54153-1542 |
| Address | MATT BEEKMAN |
| Organization | OCONTO UTILITY COMMISSION - UTILITY MGR |
| Phone | - |
Population & Service
| Population Served | 4,610 |
| Service Connections | 1,707 |
Drinking Water Violations (33)
This water system has 33 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 | - | TT | Yes | No | - | - | - | Resolved | May 27, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | May 27, 2025 | - | |
| Oct 17, 2024 | - | Other | No | No | - | - | - | Resolved | Jun 30, 2025 | - | |
| Jan 1, 2019 | Mar 31, 2019 | MCL | Yes | No | 5.63625 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2019 | - | |
| Jan 1, 2019 | Mar 31, 2019 | MCL | Yes | No | 5.63625 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2019 | - | |
| Jan 1, 2019 | Mar 31, 2019 | MCL | Yes | No | 5.63625 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2019 | - | |
| Jan 1, 2019 | Mar 31, 2019 | MCL | Yes | No | 5.63625 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2019 | - | |
| Jan 1, 2019 | Mar 31, 2019 | MCL | Yes | No | 5.63625 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2019 | - | |
| Jan 1, 2015 | Mar 31, 2015 | MCL | Yes | No | 5.73 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2015 | - | |
| Jan 1, 2015 | Mar 31, 2015 | MCL | Yes | No | 5.73 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2015 | - | |
| Jan 1, 2015 | Mar 31, 2015 | MCL | Yes | No | 5.73 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2015 | - | |
| Jan 1, 2015 | Mar 31, 2015 | MCL | Yes | No | 5.73 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2015 | - | |
| Jan 1, 2015 | Mar 31, 2015 | MCL | Yes | No | 5.73 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2015 | - | |
| Jan 1, 2015 | Mar 31, 2015 | MCL | Yes | No | 5.73 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2015 | - | |
| Jan 1, 2015 | Mar 31, 2015 | MCL | Yes | No | 5.73 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2015 | - | |
| Jan 1, 2015 | Mar 31, 2015 | MCL | Yes | No | 5.73 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2015 | - | |
| Nov 1, 1999 | Nov 30, 1999 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 1999 | - | |
| Nov 1, 1999 | Nov 30, 1999 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 1999 | - | |
| Nov 1, 1999 | Nov 30, 1999 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 1999 | - | |
| Nov 1, 1999 | Nov 30, 1999 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 1999 | - | |
| Dec 1, 1994 | Dec 31, 1994 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 1994 | - | |
| Dec 1, 1994 | Dec 31, 1994 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 1994 | - | |
| Dec 1, 1994 | Dec 31, 1994 | MR | No | No | - | 5% of samples | - | Archived | Dec 31, 1994 | - | |
| Jul 1, 1992 | Jan 28, 1993 | MR | No | No | - | TT | - | Resolved | Jan 28, 1993 | - | |
| Jul 1, 1992 | Jan 28, 1993 | MR | No | No | - | TT | - | Resolved | Jan 28, 1993 | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - |
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.