COATESVILLE 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
-
41 ROLLING MILLS DRIVE
COATESVILLE, PA 19320
View on map ↗ - County
- CHESTER County
- Inspections
- 5 · last Feb 25, 2026
- Total Penalties
- $0 · last Sep 21, 2007
- Registry ID
- 110004845482
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 | Permit Violations - Violation Specified in Comment | May 20, 2024 | — | Open |
| cwa | Permit Violations - Discharge Without a Valid Permit | May 20, 2024 | May 20, 2024 | 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 |
|---|---|---|---|---|---|---|
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.12 mg/L | 0.09 | +33% | Sep 2024 | Resolved |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.29 mg/L | 0.22 | +32% | Sep 2024 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.67 mg/L | 0.22 | +205% | Aug 2024 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.14 mg/L | 0.09 | +56% | Aug 2024 | Resolved |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.34 mg/L | 0.09 | +278% | Jul 2024 | Resolved |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.90 mg/L | 0.22 | +309% | Jul 2024 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 1.53 mg/L | 0.81 | +89% | May 2024 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.13 mg/L | 0.09 | +44% | Apr 2024 | Resolved |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.24 mg/L | 0.22 | +9% | Apr 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 11.20 mg/L | 9.20 | +22% | Sep 2019 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 1,020.00 MPN/100mL | 1,000.00 | +2% | Feb 2016 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 6,000.00 MPN/100mL | 1,000.00 | +500% | Jun 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.