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 | Dec 3, 2025 |
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 (26)
This water system has 26 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Apr 1, 2021 | Jun 30, 2021 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 2021 | Nitrate Rule |
| Apr 1, 2021 | Jun 30, 2021 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 2021 | Nitrate Rule |
| Jan 1, 2015 | Mar 31, 2015 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Mar 31, 2015 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2015 | Mar 31, 2015 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Mar 31, 2015 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2013 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 29, 2016 | Lead and Copper Rule |
| Jan 1, 2013 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 29, 2016 | Lead and Copper Rule |
| Jan 1, 2013 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 29, 2016 | Lead and Copper Rule |
| Jan 1, 2013 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Nov 29, 2016 | Lead and Copper Rule |
| Aug 1, 2011 | Aug 31, 2011 | Cryptosporidium | MR | No | Yes | — | — | — | Resolved | Aug 31, 2011 | Long Term 2 Enhanced Surface Water Treatment Rule |
| Jul 1, 2011 | Jul 31, 2011 | Cryptosporidium | MR | No | Yes | — | — | — | Resolved | Jul 21, 2011 | Long Term 2 Enhanced Surface Water Treatment Rule |
| Jun 1, 2011 | Jun 30, 2011 | Cryptosporidium | MR | No | Yes | — | — | — | Resolved | Jun 30, 2011 | Long Term 2 Enhanced Surface Water Treatment Rule |
| Mar 1, 2011 | Mar 31, 2011 | Cryptosporidium | MR | No | Yes | — | — | — | Resolved | Mar 31, 2011 | Long Term 2 Enhanced Surface Water Treatment Rule |
| Mar 1, 2011 | Mar 31, 2011 | Cryptosporidium | MR | No | Yes | — | — | — | Resolved | Mar 31, 2011 | Long Term 2 Enhanced Surface Water Treatment Rule |
| Mar 1, 2011 | Mar 31, 2011 | Cryptosporidium | MR | No | Yes | — | — | — | Resolved | Mar 31, 2011 | Long Term 2 Enhanced Surface Water Treatment Rule |
| Feb 1, 2011 | Feb 28, 2011 | Cryptosporidium | MR | No | Yes | — | — | — | Resolved | Feb 24, 2011 | Long Term 2 Enhanced Surface Water Treatment Rule |
| Oct 1, 2010 | Oct 31, 2010 | Cryptosporidium | MR | No | Yes | — | — | — | Resolved | Oct 31, 2010 | Long Term 2 Enhanced Surface Water Treatment Rule |
| Aug 1, 2010 | Aug 31, 2010 | Cryptosporidium | MR | No | Yes | — | — | — | Resolved | Aug 31, 2010 | Long Term 2 Enhanced Surface Water Treatment Rule |
| Aug 1, 2010 | Aug 31, 2010 | Cryptosporidium | MR | No | Yes | — | — | — | Resolved | Aug 31, 2010 | Long Term 2 Enhanced Surface Water Treatment Rule |
| Aug 1, 2010 | Aug 31, 2010 | Cryptosporidium | MR | No | Yes | — | — | — | Resolved | Aug 31, 2010 | Long Term 2 Enhanced Surface Water Treatment Rule |
| Aug 1, 2010 | Aug 31, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2010 | Total Coliform Rule |
| Jul 1, 2010 | Jul 31, 2010 | Cryptosporidium | MR | No | Yes | — | — | — | Resolved | Jul 22, 2010 | Long Term 2 Enhanced Surface Water Treatment Rule |
| Apr 1, 2010 | Apr 30, 2010 | Cryptosporidium | MR | No | Yes | — | — | — | Resolved | Apr 9, 2010 | Long Term 2 Enhanced Surface Water Treatment Rule |
| Apr 1, 2010 | Apr 30, 2010 | Cryptosporidium | MR | No | Yes | — | — | — | Resolved | Apr 9, 2010 | Long Term 2 Enhanced Surface Water Treatment Rule |
| Jul 1, 2008 | Sep 30, 2008 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 2008 | Nitrate Rule |
| Jan 1, 2008 | Mar 31, 2008 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Mar 31, 2008 | Nitrate Rule |
| Apr 1, 1996 | Jun 30, 1996 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 1996 | Nitrate 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.