Non-Compliance
Clean Water Act
THREE MILE ISLAND NUCLEAR STATION
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
-
ROUTE 441 SOUTH
LONDONDERRY, TOWNSHIP OF, PA 17057
View on map ↗ - County
- DAUPHIN County
- Inspections
- 8 · last Jan 21, 2026
- Total Penalties
- $0
- Registry ID
- 110064620726
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.
3
Water (CWA)
Qtrs Non-Compliant
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 | Permit Violations - Failure to Pay Fees | Jan 21, 2026 | — | Open |
| cwa | Permit Violations - Failure to Pay Fees | Jan 8, 2025 | — | Open |
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 |
|---|---|---|---|---|---|---|
| Hydrazine | DMR, Limited - Numeric Violation | 0.11 mg/L | 0.01 | +960% | Apr 2018 | Open |
| Chlorine, free available | DMR, Limited - Numeric Violation | 0.50 mg/L | 0.20 | +150% | Aug 2017 | Open |
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