NORTH SIOUX CITY - MCCOOK LAKE SYSTE
South Dakota - Community Water System - PWSID: SD4600177
System Information
| PWSID | SD4600177 |
| System Name | NORTH SIOUX CITY - MCCOOK LAKE SYSTE |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Inactive |
| Owner Type | Private |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 13, 1979 |
| Last Reported | Mar 2, 2026 |
Location & Contact
| State | South Dakota |
| City | MCCOOK LAKE |
| ZIP Code | 570491845 |
| Address | JOE GRIES |
| Organization | - |
| Phone | 605-232-4550 |
Population & Service
| Population Served | 1,300 |
| Service Connections | 372 |
Drinking Water Violations (24)
This water system has 24 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 1999 | Apr 1, 2000 | MR | No | No | - | TT | - | Resolved | Apr 1, 2000 | - | |
| Jan 1, 1999 | Apr 1, 2000 | MR | No | No | - | TT | - | Resolved | Apr 1, 2000 | - | |
| Jan 1, 1999 | Apr 1, 2000 | MR | No | No | - | TT | - | Resolved | Apr 1, 2000 | - | |
| Aug 1, 1998 | Aug 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Aug 31, 1998 | - | |
| Aug 1, 1998 | Aug 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Aug 31, 1998 | - | |
| Jun 1, 1996 | Jun 30, 1996 | MR | No | No | - | 5% of samples | - | Archived | Jun 30, 1996 | - | |
| Jan 1, 1996 | Dec 31, 1998 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 1998 | - | |
| Jan 1, 1996 | Dec 31, 1998 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 1998 | - | |
| Jan 1, 1996 | Dec 31, 1998 | MR | No | Yes | - | 0.02 mg/L | - | Resolved | Dec 31, 1998 | - | |
| Jan 1, 1996 | Dec 31, 1998 | MR | No | Yes | - | 0.02 mg/L | - | Resolved | Dec 31, 1998 | - | |
| Jan 1, 1996 | Dec 31, 1998 | MR | No | Yes | - | 0.0002 mg/L | - | Resolved | Dec 31, 1998 | - | |
| Jan 1, 1996 | Dec 31, 1998 | MR | No | Yes | - | 0.0002 mg/L | - | Resolved | Dec 31, 1998 | - | |
| Jan 1, 1996 | Dec 31, 1998 | MR | No | Yes | - | 0.00005 mg/L | - | Resolved | Dec 31, 1998 | - | |
| Jan 1, 1996 | Dec 31, 1998 | MR | No | Yes | - | 0.00005 mg/L | - | Resolved | Dec 31, 1998 | - | |
| Jan 1, 1995 | Dec 31, 1995 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1995 | - | |
| Jan 1, 1995 | Dec 31, 1995 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1995 | - | |
| Aug 1, 1993 | Aug 31, 1993 | MR | No | No | - | 5% of samples | - | Archived | Aug 31, 1993 | - | |
| Jul 1, 1976 | Jun 30, 1980 | MR | No | No | - | 15 pCi/L | - | Archived | Jun 30, 1980 | - | |
| Jul 1, 1976 | Jun 30, 1980 | MR | No | No | - | 5 pCi/L | - | Archived | Jun 30, 1980 | - | |
| - | - | - | 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.