UPPER GWYNEDD TWP STP
Quick Summary
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $0 in total penalties since records began.
- Address
-
261 TOWNSHIP LINE ROAD
NORTH WALES, PA 19454
View on map ↗ - County
- MONTGOMERY County
- Inspections
- 6 · last Jan 14, 2026
- Total Penalties
- $0 · last Oct 1, 2010
- Registry ID
- 110039743524
Compliance Status (Last 12 Quarters)
Number of calendar quarters, out of the last 12, in which this facility was in violation of its permit. Zero means no recorded violations in that program over the past three years.
Qtrs Non-Compliant
Compliance Violations
Individual permit violations recorded by the EPA across air, water, and hazardous waste programs. Open violations are unresolved as of the most recent ECHO data update.
| Program | Type | Violation Date | Return to Compliance | Status |
|---|---|---|---|---|
| cwa | Monitoring Violations - Invalid/Unrepresentative Sample | Feb 24, 2025 | — | Open |
| cwa | Permit Violations - Discharge Without a Valid Permit | Feb 12, 2024 | Feb 12, 2024 | Resolved |
| cwa | Management Practice Violations - Best Management Practice Deficiencies | Jan 2, 2024 | — | Open |
| cwa | Permit Violations - Discharge Without a Valid Permit | Jan 2, 2024 | Jan 16, 2024 | Resolved |
| cwa | Reporting Violations - Failure to Notify | Jan 2, 2024 | — | Open |
| cwa | WW SSO - Discharge to Waters | Mar 13, 2018 | Mar 13, 2018 | Resolved |
| cwa | WW SSO - Discharge to Waters | Nov 7, 2017 | Nov 9, 2017 | Resolved |
Discharge Limit Exceedances
Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.
| Pollutant | Violation | Reported | Limit | Exceedance | Period | Status |
|---|---|---|---|---|---|---|
| Phosphate, ortho [as P] | DMR, Limited - Numeric Violation | 0.60 mg/L | 0.50 | +20% | Apr 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 11,400.00 MPN/100mL | 1,000.00 | +1,040% | Jul 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 1,229.89 kg/d | 1,090.51 | +13% | Apr 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 1,240.33 kg/d | 1,090.51 | +14% | Jan 2024 | Open |
| Phosphate, ortho [as P] | DMR, Limited - Numeric Violation | 0.56 mg/L | 0.50 | +12% | Sep 2023 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 7,200.00 MPN/100mL | 1,000.00 | +620% | Aug 2020 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 7,600.00 MPN/100mL | 1,000.00 | +660% | Aug 2018 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 6,400.00 MPN/100mL | 1,000.00 | +540% | Jul 2018 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 14,000.00 MPN/100mL | 1,000.00 | +1,300% | Apr 2017 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 800.00 MPN/100mL | 1,000.00 | +99,999% | Dec 2015 | Open |
Enforcement Actions
Formal enforcement cases brought by the EPA or state agencies, including administrative orders and civil penalties assessed. Penalty amounts reflect what was formally assessed, not necessarily what was collected.