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 | Dec 9, 2025 |
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 (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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 1999 | Apr 1, 2000 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Apr 1, 2000 | Lead and Copper Rule |
| Jun 1, 1996 | Jun 30, 1996 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Jun 30, 1996 | Total Coliform Rule |
| Jan 1, 1996 | Dec 31, 1998 | Endothall | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 1998 | Synthetic Organic Chemicals |
| Jan 1, 1996 | Dec 31, 1998 | ETHYLENE DIBROMIDE | MR | No | Yes | — | 0.00005 mg/L | — | Resolved | Dec 31, 1998 | Synthetic Organic Chemicals |
| Aug 1, 1993 | Aug 31, 1993 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Aug 31, 1993 | Total Coliform Rule |
| Jul 1, 1976 | Jun 30, 1980 | Combined Radium (-226 and -228) | MR | No | No | — | 5 pCi/L | — | Archived | Jun 30, 1980 | Radionuclides and Revised Rad Rule |
| Jul 1, 1976 | Jun 30, 1980 | Gross Alpha, Excl. Radon and U | MR | No | No | — | 15 pCi/L | — | Archived | Jun 30, 1980 | Radionuclides and Revised Rad Rule |
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.