STEPHENSON CO-OP
Wisconsin — Transient Non-Community — PWSID: WI4190070
System Information
| PWSID | WI4190070 |
| System Name | STEPHENSON CO-OP |
| System Type | Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 17, 2016 |
| Last Reported | Mar 2, 2026 |
Location & Contact
| State | Wisconsin |
| City | NIAGARA |
| ZIP Code | 54151 |
| Address | 1109 COUNTY RD. B |
| Organization | STEPHENSON CO-OP |
| Phone | — |
Population & Service
| Population Served | 100 |
| Service Connections | 1 |
Drinking Water Violations (10)
This water system has 10 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, 2017 | — | Other | No | No | — | — | — | Resolved | Nov 20, 2018 | — | |
| Oct 1, 2017 | — | Other | No | No | — | — | — | Resolved | Nov 20, 2018 | — | |
| Jan 1, 2017 | Sep 30, 2017 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2017 | — | |
| Jan 1, 2017 | Sep 30, 2017 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2017 | — | |
| Jan 1, 2017 | Sep 30, 2017 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2017 | — | |
| Jan 1, 2017 | Sep 30, 2017 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2017 | — |
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.