TOWN OF POOLESVILLE
Maryland — Community Water System — PWSID: MD0150002
System Information
| PWSID | MD0150002 |
| System Name | TOWN OF POOLESVILLE |
| System Type | Community Water System |
| Water Source | Ground Water Under Influence |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 03 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 21, 1982 |
| Last Reported | Feb 26, 2026 |
Location & Contact
| State | Maryland |
| City | POOLESVILLE |
| ZIP Code | 20837 |
| Address | P.O. BOX 158 |
| Organization | YOST, DARELL |
| Phone | 240-793-4866 |
Population & Service
| Population Served | 6,005 |
| Service Connections | 2,105 |
Drinking Water Violations (147)
This water system has 147 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 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 10 mg/L | — | Archived | Dec 31, 2025 | — | |
| Oct 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 10 mg/L | — | Archived | Dec 31, 2025 | — | |
| Oct 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 10 mg/L | — | Archived | Dec 31, 2025 | — | |
| Apr 1, 2021 | Jun 30, 2021 | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 2021 | — | |
| Apr 1, 2021 | Jun 30, 2021 | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 2021 | — | |
| Apr 1, 2021 | Jun 30, 2021 | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 2021 | — | |
| Jan 1, 2021 | Dec 31, 2023 | MR | No | Yes | — | 4.0 mg/L | — | Archived | Dec 31, 2023 | — | |
| Jul 1, 2015 | Jul 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2015 | — | |
| Jul 1, 2015 | Jul 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2015 | — | |
| Jul 1, 2015 | Jul 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2015 | — | |
| Jul 1, 2015 | Jul 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2015 | — | |
| Jul 1, 2015 | Sep 30, 2015 | MCL | Yes | No | 26 PCI/L | 15 pCi/L | 15 | Resolved | Sep 30, 2015 | — | |
| Jul 1, 2015 | Sep 30, 2015 | MCL | Yes | No | 26 PCI/L | 15 pCi/L | 15 | Resolved | Sep 30, 2015 | — | |
| Jul 1, 2015 | Sep 30, 2015 | MCL | Yes | No | 26 PCI/L | 15 pCi/L | 15 | Resolved | Sep 30, 2015 | — | |
| Apr 1, 2015 | Jun 30, 2015 | MCL | Yes | No | 30 PCI/L | 15 pCi/L | 15 | Resolved | Jun 30, 2015 | — | |
| Apr 1, 2015 | Jun 30, 2015 | MCL | Yes | No | 30 PCI/L | 15 pCi/L | 15 | Resolved | Jun 30, 2015 | — | |
| Apr 1, 2015 | Jun 30, 2015 | MCL | Yes | No | 30 PCI/L | 15 pCi/L | 15 | Resolved | Jun 30, 2015 | — | |
| Apr 1, 2015 | Jun 30, 2015 | MCL | Yes | No | 30 PCI/L | 15 pCi/L | 15 | Resolved | Jun 30, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Mar 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Mar 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Mar 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Mar 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Mar 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Mar 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Mar 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Mar 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Mar 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Mar 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Mar 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Mar 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Mar 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Mar 31, 2015 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Dec 31, 2014 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Dec 31, 2014 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Dec 31, 2014 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Dec 31, 2014 | — | |
| Jan 1, 2013 | — | MR | No | No | — | TT | — | Resolved | Nov 29, 2016 | — | |
| Jan 1, 2013 | — | MR | No | No | — | TT | — | Resolved | Nov 29, 2016 | — | |
| Jan 1, 2013 | — | MR | No | No | — | TT | — | Resolved | Nov 29, 2016 | — | |
| Jan 1, 2013 | — | MR | No | No | — | TT | — | Resolved | Nov 29, 2016 | — | |
| Jan 1, 2013 | — | MR | No | No | — | TT | — | Resolved | Nov 29, 2016 | — | |
| Jan 1, 2013 | — | MR | No | No | — | TT | — | Resolved | Nov 29, 2016 | — | |
| Jan 1, 2013 | — | MR | No | No | — | TT | — | Resolved | Nov 29, 2016 | — | |
| Oct 1, 2012 | — | MR | No | No | — | TT | — | Resolved | Feb 15, 2013 | — | |
| Oct 1, 2012 | Dec 31, 2012 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2012 | — | |
| Apr 1, 2012 | Jun 30, 2012 | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 2012 | — | |
| Apr 1, 2012 | Jun 30, 2012 | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 2012 | — | |
| Apr 1, 2012 | Jun 30, 2012 | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 2012 | — | |
| Oct 1, 2011 | Oct 31, 2011 | MR | No | Yes | — | — | — | Resolved | Oct 13, 2011 | — | |
| Oct 1, 2011 | Oct 31, 2011 | MR | No | Yes | — | — | — | Resolved | Oct 13, 2011 | — |
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.