MCGREGOR DOWNS MHP (SC3260059)
Maryland - Community Water System - PWSID: SC3260059
System Information
| PWSID | SC3260059 |
| System Name | MCGREGOR DOWNS MHP (SC3260059) |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 04 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 10, 1979 |
| Last Reported | Jun 29, 2026 |
Location & Contact
| State | Maryland |
| City | POTOMAC |
| ZIP Code | 20854 |
| Address | 10221 RIVER ROAD |
| Organization | MAGURNE, NATALIE |
| Phone | 762-333-5128 |
Population & Service
| Population Served | 626 |
| Service Connections | 232 |
Drinking Water Violations (51)
This water system has 51 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb 25, 2026 | - | RPT | No | No | - | - | - | Resolved | Mar 9, 2026 | - | |
| Feb 25, 2026 | - | RPT | No | No | - | - | - | Resolved | Mar 9, 2026 | - | |
| Feb 25, 2026 | - | RPT | No | No | - | - | - | Resolved | Mar 9, 2026 | - | |
| Feb 1, 2026 | Feb 28, 2026 | MCL | Yes | No | - | - | - | Archived | Feb 28, 2026 | - | |
| Feb 1, 2026 | Feb 28, 2026 | MCL | Yes | No | - | - | - | Archived | Feb 28, 2026 | - | |
| Feb 1, 2026 | Feb 28, 2026 | MCL | Yes | No | - | - | - | Archived | Feb 28, 2026 | - | |
| Feb 1, 2026 | Feb 28, 2026 | MCL | Yes | No | - | - | - | Archived | Feb 28, 2026 | - | |
| Oct 1, 2025 | - | MR | No | No | - | TT | - | Unaddressed | - | - | |
| Oct 1, 2025 | - | MR | No | No | - | TT | - | Unaddressed | - | - | |
| Oct 1, 2024 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Oct 1, 2024 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Feb 20, 2019 | - | MR | No | No | - | - | - | Resolved | Apr 23, 2019 | - | |
| Feb 20, 2019 | - | MR | No | No | - | - | - | Resolved | Apr 23, 2019 | - | |
| Feb 20, 2019 | - | MR | No | No | - | - | - | Resolved | Apr 23, 2019 | - | |
| Feb 20, 2019 | - | MR | No | No | - | - | - | Resolved | Apr 23, 2019 | - | |
| Oct 1, 2013 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2013 | - | |
| Oct 1, 2013 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2013 | - | |
| Oct 1, 2013 | - | MR | No | No | - | TT | - | Resolved | Dec 31, 2013 | - | |
| Oct 1, 2010 | - | MR | No | No | - | TT | - | Resolved | Sep 6, 2016 | - | |
| Oct 1, 2010 | - | MR | No | No | - | TT | - | Resolved | Sep 6, 2016 | - | |
| Oct 1, 2010 | - | MR | No | No | - | TT | - | Resolved | Sep 6, 2016 | - | |
| Jul 1, 2005 | - | Other | No | No | - | - | - | Resolved | Jul 29, 2005 | - | |
| Jul 1, 2005 | - | Other | No | No | - | - | - | Resolved | Jul 29, 2005 | - | |
| Jan 1, 1994 | - | MR | No | No | - | TT | - | Resolved | Jul 1, 1995 | - | |
| Jan 1, 1994 | - | MR | No | No | - | TT | - | Resolved | Jul 1, 1995 | - | |
| Sep 1, 1992 | Sep 30, 1992 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 1992 | - | |
| Sep 1, 1992 | Sep 30, 1992 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 1992 | - | |
| Jul 1, 1992 | Jul 31, 1992 | MR | No | No | - | 5% of samples | - | Archived | Jul 31, 1992 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.1 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 1 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.007 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.7 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.0002 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.1 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.075 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.07 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.6 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.00005 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.1 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.002 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.07 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.2 mg/L | - | Archived | Mar 31, 1991 | - | |
| Jan 1, 1991 | Mar 31, 1991 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Mar 31, 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.