U S F W S HORICON HDQRTS BLDG
Wisconsin — Transient Non-Community — PWSID: WI1140872
System Information
| PWSID | WI1140872 |
| System Name | U S F W S HORICON HDQRTS BLDG |
| System Type | Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Federal |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | May 27, 1993 |
| Last Reported | Mar 2, 2026 |
Location & Contact
| State | Wisconsin |
| City | MAYVILLE |
| ZIP Code | 53050-1931 |
| Address | C/O MANDY DORSCH |
| Organization | NATL WILDLIFE REFUGE |
| Phone | — |
Population & Service
| Population Served | 68 |
| Service Connections | 1 |
Drinking Water Violations (7)
This water system has 7 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 | Dec 31, 2023 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2023 | — | |
| Oct 1, 2023 | Dec 31, 2023 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2023 | — | |
| Oct 1, 2023 | Dec 31, 2023 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2023 | — | |
| Oct 1, 2023 | Dec 31, 2023 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 1995 | Dec 31, 1995 | MR | No | Yes | — | 1 mg/L | — | Resolved | Aug 14, 1995 | — | |
| Jan 1, 1995 | Dec 31, 1995 | MR | No | Yes | — | 10 mg/L | — | Resolved | Aug 14, 1995 | — | |
| Jan 1, 1995 | Dec 31, 1995 | MR | No | No | — | 5% of samples | — | Resolved | Aug 14, 1995 | — |
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.