MERRILL WATERWORKS
Wisconsin — Community Water System — PWSID: WI7350123
System Information
| PWSID | WI7350123 |
| System Name | MERRILL 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 | MERRILL |
| ZIP Code | 54452 |
| Address | 2401 RIVER ST. |
| Organization | CITY OF MERRILL- UTILITY MANAGER |
| Phone | — |
Population & Service
| Population Served | 9,661 |
| Service Connections | 4,096 |
Drinking Water Violations (236)
This water system has 236 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, 2025 | — | RPT | No | No | — | — | — | Resolved | Oct 22, 2025 | — | |
| Oct 17, 2025 | — | TT | Yes | No | — | — | — | Resolved | Oct 22, 2025 | — | |
| Oct 17, 2025 | — | RPT | No | No | — | — | — | Resolved | Oct 22, 2025 | — | |
| Oct 17, 2025 | — | RPT | No | No | — | — | — | Resolved | Oct 22, 2025 | — | |
| Oct 17, 2025 | — | TT | Yes | No | — | — | — | Resolved | Oct 22, 2025 | — | |
| Oct 17, 2025 | — | TT | Yes | No | — | — | — | Resolved | Oct 22, 2025 | — | |
| Oct 17, 2025 | — | TT | Yes | No | — | — | — | Resolved | Oct 22, 2025 | — | |
| Oct 17, 2025 | — | RPT | No | No | — | — | — | Resolved | Oct 22, 2025 | — | |
| Jun 1, 2006 | Jun 30, 2006 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2006 | — | |
| Jun 1, 2006 | Jun 30, 2006 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2006 | — | |
| Jun 1, 2006 | Jun 30, 2006 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2006 | — | |
| Jun 1, 2006 | Jun 30, 2006 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2006 | — | |
| Jun 1, 2006 | Jun 30, 2006 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2006 | — | |
| Apr 1, 2004 | Jun 30, 2004 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Jun 30, 2004 | — | |
| Apr 1, 2004 | Jun 30, 2004 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jun 30, 2004 | — | |
| Apr 1, 2004 | Jun 30, 2004 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jun 30, 2004 | — | |
| Apr 1, 2004 | Jun 30, 2004 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jun 30, 2004 | — | |
| Apr 1, 2004 | Jun 30, 2004 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Jun 30, 2004 | — | |
| Apr 1, 2004 | Jun 30, 2004 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Jun 30, 2004 | — | |
| Apr 1, 2004 | Jun 30, 2004 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Jun 30, 2004 | — | |
| Apr 1, 2004 | Jun 30, 2004 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jun 30, 2004 | — | |
| Apr 1, 2004 | Jun 30, 2004 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Jun 30, 2004 | — | |
| Apr 1, 2004 | Jun 30, 2004 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jun 30, 2004 | — | |
| Aug 1, 1994 | Aug 31, 1994 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 1994 | — | |
| Aug 1, 1994 | Aug 31, 1994 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 1994 | — | |
| Aug 1, 1994 | Aug 31, 1994 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 1994 | — | |
| Aug 1, 1994 | Aug 31, 1994 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 1994 | — | |
| Aug 1, 1994 | Aug 31, 1994 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 1994 | — | |
| Aug 1, 1994 | Aug 31, 1994 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 1994 | — | |
| Aug 1, 1994 | Aug 31, 1994 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 1994 | — | |
| Aug 1, 1994 | Aug 31, 1994 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 1994 | — | |
| Jan 1, 1993 | Dec 31, 1993 | MR | No | Yes | — | 0.001 mg/L | — | Resolved | Jul 7, 1993 | — | |
| Jan 1, 1993 | Dec 31, 1993 | MR | No | Yes | — | 0.001 mg/L | — | Resolved | Jul 7, 1993 | — | |
| Jan 1, 1993 | Dec 31, 1993 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Jul 7, 1993 | — | |
| Jan 1, 1993 | Dec 31, 1993 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Jul 7, 1993 | — | |
| Jan 1, 1993 | Dec 31, 1993 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Jul 7, 1993 | — | |
| Jan 1, 1993 | Dec 31, 1993 | MR | No | Yes | — | — | — | Resolved | Jul 7, 1993 | — | |
| Jan 1, 1993 | Dec 31, 1993 | MR | No | Yes | — | — | — | Resolved | Jul 7, 1993 | — | |
| Jan 1, 1993 | Dec 31, 1993 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Jul 7, 1993 | — | |
| Jan 1, 1993 | Dec 31, 1993 | MR | No | Yes | — | 0.5 mg/L | — | Resolved | Jul 7, 1993 | — | |
| Jan 1, 1993 | Dec 31, 1993 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Jul 7, 1993 | — | |
| Jan 1, 1993 | Dec 31, 1993 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Jul 7, 1993 | — | |
| Jan 1, 1993 | Dec 31, 1993 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Jul 7, 1993 | — | |
| Jan 1, 1993 | Dec 31, 1993 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Jul 7, 1993 | — | |
| Jan 1, 1993 | Dec 31, 1993 | MR | No | Yes | — | 0.0005 mg/L | — | Resolved | Jul 7, 1993 | — | |
| Jan 1, 1993 | Dec 31, 1993 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Jul 7, 1993 | — | |
| Jan 1, 1993 | Dec 31, 1993 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Jul 7, 1993 | — | |
| Jan 1, 1993 | Dec 31, 1993 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Jul 7, 1993 | — | |
| Jan 1, 1993 | Dec 31, 1993 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Jul 7, 1993 | — | |
| Jan 1, 1993 | Dec 31, 1993 | MR | No | Yes | — | 0.5 mg/L | — | Resolved | Jul 7, 1993 | — |
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.