SWT MAIN SYSTEM
Pennsylvania — Community Water System — PWSID: PA3390065
System Information
| PWSID | PA3390065 |
| System Name | SWT MAIN SYSTEM |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 03 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 12, 1979 |
| Last Reported | Mar 30, 2026 |
Location & Contact
| State | Pennsylvania |
| City | ALLENTOWN |
| ZIP Code | 18104 |
| Address | 4444 WALBERT AVE |
| Organization | SWT MAIN SYSTEM |
| Phone | 610-398-0407 |
Population & Service
| Population Served | 14,500 |
| Service Connections | 6,284 |
Drinking Water Violations (537)
This water system has 537 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 | — | MR | No | No | — | TT | — | Resolved | Dec 19, 2025 | — | |
| Oct 1, 2025 | — | MR | No | No | — | TT | — | Resolved | Dec 19, 2025 | — | |
| Sep 1, 2024 | Sep 30, 2024 | MR | No | Yes | — | — | — | Resolved | Sep 30, 2024 | — | |
| Sep 1, 2024 | Sep 30, 2024 | MON | No | No | — | — | — | Resolved | Sep 30, 2024 | — | |
| Sep 1, 2024 | Sep 30, 2024 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2024 | — | |
| Sep 1, 2024 | Sep 30, 2024 | MON | No | No | — | — | — | Resolved | Sep 30, 2024 | — | |
| Sep 1, 2024 | Sep 30, 2024 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2024 | — | |
| Sep 1, 2024 | Sep 30, 2024 | MON | No | No | — | — | — | Resolved | Sep 30, 2024 | — | |
| Sep 1, 2024 | Sep 30, 2024 | MR | No | Yes | — | — | — | Resolved | Sep 30, 2024 | — | |
| Sep 1, 2024 | Sep 30, 2024 | MR | No | Yes | — | — | — | Resolved | Sep 30, 2024 | — | |
| Sep 1, 2024 | Sep 30, 2024 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2024 | — | |
| Jul 1, 2020 | — | Other | No | No | — | — | — | Resolved | Sep 28, 2020 | — | |
| Jul 1, 2020 | — | Other | No | No | — | — | — | Resolved | Sep 28, 2020 | — | |
| Mar 1, 2017 | Mar 31, 2017 | MR | No | Yes | — | — | — | Resolved | Mar 31, 2017 | — | |
| Mar 1, 2017 | Mar 31, 2017 | MR | No | Yes | — | — | — | Resolved | Mar 31, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | No | — | 0.00000003 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | No | — | 0.00000003 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | No | — | 0.00000003 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | No | — | 0.00000003 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Sep 1, 2016 | Sep 30, 2016 | TT | Yes | No | — | — | — | Resolved | Sep 30, 2016 | — | |
| Sep 1, 2016 | Sep 30, 2016 | TT | Yes | No | — | — | — | Resolved | Sep 30, 2016 | — | |
| Sep 1, 2016 | Sep 30, 2016 | TT | Yes | No | — | — | — | Resolved | Sep 30, 2016 | — | |
| Sep 1, 2016 | Sep 30, 2016 | TT | Yes | No | — | — | — | Resolved | Sep 30, 2016 | — | |
| Aug 1, 2015 | Aug 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2015 | — | |
| Aug 1, 2015 | Aug 31, 2015 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2015 | — | |
| Aug 1, 2015 | Aug 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2015 | — | |
| Aug 1, 2015 | Aug 31, 2015 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2015 | — | |
| Aug 1, 2015 | Aug 31, 2015 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2015 | — | |
| Aug 1, 2015 | Aug 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2015 | — | |
| Aug 1, 2015 | Aug 31, 2015 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2015 | — | |
| Aug 1, 2015 | Aug 31, 2015 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2015 | — | |
| Aug 1, 2015 | Aug 31, 2015 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2015 | — | |
| Aug 1, 2015 | Aug 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2015 | — | |
| Aug 1, 2015 | Aug 31, 2015 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2015 | — | |
| Aug 1, 2015 | Aug 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2015 | — | |
| Aug 1, 2015 | Aug 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2015 | — | |
| Aug 1, 2015 | Aug 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | Aug 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 | — | 0.080 mg/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 | — | 0.060 mg/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 | — | 0.060 mg/L | — | Resolved | Mar 31, 2015 | — | |
| Dec 1, 2014 | Dec 31, 2014 | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2014 | — | |
| Dec 1, 2014 | Dec 31, 2014 | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2014 | — | |
| Dec 1, 2014 | Dec 31, 2014 | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2014 | — | |
| Dec 1, 2014 | Dec 31, 2014 | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2014 | — | |
| Oct 1, 2014 | Oct 31, 2014 | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2014 | — |
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.