CONSTELLATION NUCLEAR PWR PLNT
Pennsylvania - Non-Transient Non-Community - PWSID: PA1460847
System Information
| PWSID | PA1460847 |
| System Name | CONSTELLATION NUCLEAR PWR PLNT |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 03 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 21, 1981 |
| Last Reported | Mar 30, 2026 |
Location & Contact
| State | Pennsylvania |
| City | POTTSTOWN |
| ZIP Code | 19464 |
| Address | 3146 SANATOGA RD, SSB 2-1 |
| Organization | CONSTELLATION NUCLEAR PWR PLNT |
| Phone | 610-718-2513 |
Population & Service
| Population Served | 1,650 |
| Service Connections | 9 |
Drinking Water Violations (125)
This water system has 125 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, 2025 | - | MR | No | No | - | TT | - | Resolved | Jan 28, 2025 | - | |
| Jan 1, 2025 | - | MR | No | No | - | TT | - | Resolved | Jan 28, 2025 | - | |
| Jan 1, 2022 | - | MR | No | No | - | TT | - | Resolved | Jan 12, 2022 | - | |
| Jan 1, 2022 | - | MR | No | No | - | TT | - | Resolved | Jan 12, 2022 | - | |
| Jan 1, 2011 | Mar 31, 2011 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Mar 25, 2011 | - | |
| Jan 1, 2011 | Mar 31, 2011 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Mar 25, 2011 | - | |
| May 11, 2006 | - | Other | No | No | - | - | - | Resolved | Jun 28, 2006 | - | |
| May 11, 2006 | - | Other | No | No | - | - | - | Resolved | Jun 28, 2006 | - | |
| May 11, 2006 | - | Other | No | No | - | - | - | Resolved | Jun 28, 2006 | - | |
| May 11, 2006 | - | Other | No | No | - | - | - | Resolved | Jun 28, 2006 | - | |
| Jan 1, 2006 | Mar 31, 2006 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Mar 31, 2006 | - | |
| Jan 1, 2006 | Mar 31, 2006 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Mar 31, 2006 | - | |
| Jan 1, 2006 | Mar 31, 2006 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Mar 31, 2006 | - | |
| Jan 1, 2006 | Mar 31, 2006 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Mar 31, 2006 | - | |
| Apr 1, 2005 | Mar 31, 2006 | MCL | Yes | No | .011 | 0.010 mg/L | - | Resolved | Mar 31, 2006 | - | |
| Apr 1, 2005 | Mar 31, 2006 | MCL | Yes | No | .011 | 0.010 mg/L | - | Resolved | Mar 31, 2006 | - | |
| Apr 1, 2005 | Mar 31, 2006 | MCL | Yes | No | .011 | 0.010 mg/L | - | Resolved | Mar 31, 2006 | - | |
| Apr 1, 2005 | Mar 31, 2006 | MCL | Yes | No | .011 | 0.010 mg/L | - | Resolved | Mar 31, 2006 | - | |
| Jul 1, 1999 | Sep 30, 1999 | MR | No | Yes | - | 10 mg/L | - | Resolved | Sep 30, 1999 | - | |
| Jul 1, 1999 | Sep 30, 1999 | MR | No | Yes | - | 10 mg/L | - | Resolved | Sep 30, 1999 | - | |
| Jul 1, 1999 | Sep 30, 1999 | MR | No | Yes | - | 10 mg/L | - | Resolved | Sep 30, 1999 | - | |
| Jun 1, 1998 | Jun 30, 1998 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 1998 | - | |
| May 1, 1998 | May 31, 1998 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 1998 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 2 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 0.05 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 0.05 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 0.05 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | - | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 0.006 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 0.006 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 0.006 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 0.004 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 0.004 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 0.004 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | - | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | - | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 2 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 1997 | - |
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.