BLACK HILLS NF-COOK LAKE CG
South Dakota — Transient Non-Community — PWSID: WY5680010
System Information
| PWSID | WY5680010 |
| System Name | BLACK HILLS NF-COOK LAKE CG |
| System Type | Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Federal |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 2, 1981 |
| Last Reported | Mar 2, 2026 |
Location & Contact
| State | South Dakota |
| City | SPEARFISH |
| ZIP Code | 57783 |
| Address | 2014 N. Main Street |
| Organization | COUPE, BRITTANY |
| Phone | 605-442-3092 |
Population & Service
| Population Served | 165 |
| Service Connections | 1 |
Drinking Water Violations (17)
This water system has 17 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 1, 2025 | Sep 30, 2025 | MON | No | Yes | — | — | — | Archived | Sep 30, 2025 | — | |
| Jul 11, 2025 | — | RPT | No | No | — | — | — | Resolved | Jul 23, 2025 | — | |
| Mar 7, 2018 | — | Other | No | No | — | — | — | Resolved | May 17, 2018 | — | |
| Sep 1, 2017 | Sep 30, 2017 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2017 | — | |
| Sep 1, 2017 | Sep 30, 2017 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2017 | — | |
| Sep 1, 2016 | Sep 30, 2016 | MCL | Yes | No | — | — | — | Resolved | Sep 28, 2016 | — | |
| Sep 1, 2016 | Sep 30, 2016 | MCL | Yes | No | — | — | — | Resolved | Sep 28, 2016 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2013 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2013 | — | |
| Jul 1, 2012 | Sep 30, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2012 | — | |
| Jul 1, 2012 | Sep 30, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2012 | — | |
| Apr 1, 2006 | Jun 30, 2006 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2006 | — | |
| Apr 1, 2006 | Jun 30, 2006 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2006 | — | |
| Aug 1, 2005 | Aug 31, 2005 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2005 | — | |
| Aug 1, 2005 | Aug 31, 2005 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2005 | — | |
| Jul 1, 1992 | Sep 30, 1992 | MR | No | Yes | — | 5% of samples | — | Archived | Sep 30, 1992 | — | |
| Apr 1, 1991 | Jun 30, 1991 | MR | No | No | — | 5% of samples | — | Archived | Jun 30, 1991 | — |
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.