Non-Compliance
Clean Air Act
Clean Water Act
RCRA
DELCORA TREATMENT PLANT - WRTP
Quick Summary
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $62,075 in total penalties since records began.
- Address
-
3201 W FRONT ST
CHESTER, PA 19013
View on map ↗ - County
- DELAWARE County
- Industry
- Utilities
- NAICS (North American Industry Classification)
- 221320
- Inspections
- 11 · last Nov 7, 2025
- Total Penalties
- $62,075 · last Jul 22, 2024
- Registry ID
- 110007765971
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.
7
Air (CAA)
Qtrs Non-Compliant
Qtrs Non-Compliant
6
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
0
Hazardous Waste (RCRA)
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 |
|---|---|---|---|---|
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| cwa | PR: Failure of the Control Authority to publish for SNC (Level II - Other) | Dec 31, 2025 | — | Open |
| caa | FRV | Feb 4, 2025 | — | Open |
| cwa | PR: Failure of the Control Authority to publish for SNC (Level II - Other) | Dec 31, 2024 | — | Open |
| caa | HPV | Apr 26, 2023 | Jul 22, 2024 | Resolved |
| cwa | WW Storm Water Construction - Failure to properly operate and maintain BMPs | Jun 16, 2022 | — | Open |
| caa | HPV | Apr 4, 2022 | Oct 3, 2022 | Resolved |
| caa | HPV | Mar 1, 2022 | Oct 3, 2022 | Resolved |
| cwa | WW Storm Water Construction - Failure to Implement SWPPP/SWMP | Dec 14, 2021 | — | Open |
| caa | HPV | Oct 13, 2021 | Oct 3, 2022 | Resolved |
| caa | HPV | Aug 26, 2021 | Oct 3, 2022 | Resolved |
| caa | FRV | Aug 9, 2021 | — | Open |
| caa | HPV | Apr 16, 2021 | Oct 22, 2021 | Resolved |
| caa | FRV | Oct 30, 2020 | — | Open |
| caa | FRV | Oct 23, 2020 | — | Open |
| caa | HPV | Jul 24, 2019 | Jan 20, 2020 | Resolved |
| caa | HPV | Apr 1, 2019 | Jan 20, 2020 | Resolved |
| caa | FRV | May 18, 2018 | — | Open |
| caa | HPV | Nov 30, 2017 | Nov 6, 2018 | Resolved |
| caa | FRV | Jun 15, 2017 | — | Open |
| caa | HPV | Mar 6, 2017 | Nov 6, 2018 | Resolved |
| caa | FRV | Nov 8, 2016 | — | Open |
| caa | FRV | Aug 29, 2016 | — | Open |
| caa | HPV | Jun 7, 2016 | Mar 2, 2017 | Resolved |
| caa | FRV | Apr 21, 2016 | — | Open |
| cwa | Pretreatment - Failure to Issue SIU Permits | Dec 31, 1999 | Dec 31, 2001 | Resolved |
| cwa | Management Practice Violations - Failure to Develop/Enforce Standards | Dec 21, 1993 | Dec 31, 1993 | Resolved |
| cwa | Pretreatment - Failure to Enforce Against I/U | Feb 3, 1993 | Jun 30, 1993 | Resolved |
| cwa | Management Practice Violations - Failure to Develop/Enforce Standards | Dec 31, 1991 | Feb 3, 1993 | 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 |
|---|---|---|---|---|---|---|
| Oil & Grease | DMR, Limited - Numeric Violation | 42.00 mg/L | 30.00 | +40% | Jan 2026 | Open |
| TU Static 7Day Chronic Ceriodaphnia dubia | DMR, Limited - Numeric Violation | 5.50 toxic | 5.50 | +99,999% | Sep 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 61,300.00 MPN/100mL | 1,000.00 | +6,030% | Aug 2025 | Open |
| TU Static 7Day Chronic Ceriodaphnia dubia | DMR, Limited - Numeric Violation | 5.50 toxic | 5.50 | +99,999% | Jun 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 1,200.00 MPN/100mL | 1,000.00 | +20% | Jun 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 2,420.00 MPN/100mL | 1,000.00 | +99,999% | May 2025 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 4,961.77 kg/d | 4,767.00 | +4% | Feb 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 24.60 mg/L | 23.00 | +7% | Feb 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 71.20 mg/L | 45.00 | +58% | Feb 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 36.70 mg/L | 30.00 | +22% | Feb 2025 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 31.10 mg/L | 29.00 | +7% | Feb 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 11,645.10 kg/d | 7,491.00 | +55% | Feb 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 5,190.13 kg/d | 4,994.00 | +4% | Feb 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 2,420.00 MPN/100mL | 1,000.00 | +99,999% | Aug 2024 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 30.00 MPN/100mL | 200.00 | +99,999% | Aug 2024 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 36.00 MPN/100mL | 200.00 | +99,999% | Jul 2024 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 2,420.00 MPN/100mL | 1,000.00 | +99,999% | Jul 2024 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 2,420.00 MPN/100mL | 1,000.00 | +99,999% | Aug 2023 | Resolved |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 2,420.00 MPN/100mL | 1,000.00 | +142% | Jun 2023 | Resolved |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 2,420.00 MPN/100mL | 1,000.00 | +99,999% | May 2023 | Resolved |
| TU Static 7Day Chronic Ceriodaphnia dubia | DMR, Limited - Numeric Violation | 5.50 toxic | 5.50 | +99,999% | Mar 2023 | Resolved |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 1.35 mg/L | 1.00 | +35% | Mar 2023 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 33.20 mg/L | 30.00 | +11% | Dec 2022 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 49.00 mg/L | 45.00 | +9% | Dec 2022 | Resolved |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 3.70 mg/L | 4.00 | +8% | Sep 2022 | Resolved |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 1.26 mg/L | 1.00 | +26% | Jun 2022 | Resolved |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 1.14 mg/L | 1.00 | +14% | Mar 2022 | Resolved |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.60 mg/L | 0.50 | +20% | Mar 2022 | Resolved |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 21.00 MPN/100mL | 200.00 | +99,999% | Feb 2021 | Resolved |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 12.00 MPN/100mL | 200.00 | +99,999% | Dec 2020 | Resolved |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 8.00 MPN/100mL | 200.00 | +99,999% | Nov 2020 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 5,099.78 kg/d | 4,767.00 | +7% | May 2020 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 47.00 mg/L | 45.00 | +4% | May 2020 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 42.00 mg/L | 29.00 | +45% | May 2020 | Resolved |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 11.00 MPN/100mL | 200.00 | +99,999% | Apr 2020 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 4,856.89 kg/d | 4,767.00 | +2% | Apr 2020 | Resolved |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 27.97 MPN/100mL | 200.00 | +99,999% | Feb 2020 | Resolved |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 1.30 mg/L | 1.00 | +30% | Dec 2019 | Resolved |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 21.00 MPN/100mL | 200.00 | +99,999% | Aug 2019 | Resolved |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 1,000.00 | +99,999% | Aug 2019 | Resolved |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 29.00 MPN/100mL | 200.00 | +99,999% | Jun 2019 | Resolved |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 1,000.00 | +99,999% | Jun 2019 | Resolved |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 14.00 MPN/100mL | 200.00 | +99,999% | Apr 2019 | Resolved |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 13.00 MPN/100mL | 200.00 | +99,999% | Mar 2019 | Resolved |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 1.09 mg/L | 1.00 | +9% | Mar 2019 | Resolved |
| BOD, carbonaceous [20 day, 20 C] | DMR, Limited - Numeric Violation | 6,644.74 kg/d | 4,767.00 | +39% | Feb 2019 | Resolved |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 24.00 MPN/100mL | 200.00 | +99,999% | Feb 2019 | Resolved |
| BOD, carbonaceous [20 day, 20 C] | DMR, Limited - Numeric Violation | 5,295.46 kg/d | 4,767.00 | +11% | Jan 2019 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 10,096.51 kg/d | 7,491.00 | +35% | Dec 2018 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 4,801.50 kg/d | 4,767.00 | +1% | Dec 2018 | Resolved |
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.
Administrative - Formal
Clean Air Act
· Case 3604047201 · Jul 22, 2024
$10,350
Notice of Violation
Clean Air Act
· Case 3603585945 · Apr 26, 2023
Administrative - Formal
Clean Air Act
· Case 3603377470 · Oct 3, 2022
$31,650
Notice of Violation
Clean Air Act
· Case 3603069504 · Apr 4, 2022
Administrative - Formal
Clean Air Act
· Case 3602871450 · Oct 20, 2021
$20,075
Notice of Violation
Clean Air Act
· Case 3602867745 · Oct 13, 2021
Notice of Violation
Clean Air Act
· Case 3602810049 · Aug 26, 2021
Notice of Violation
Clean Air Act
· Case 3602507616 · Apr 16, 2021
Administrative - Formal
Clean Air Act
· Case 3602499529 · Jan 20, 2020
$7,770
Notice of Violation
Clean Air Act
· Case 3602507099 · Jul 24, 2019
Notice of Violation
Clean Air Act
· Case 3602506955 · Apr 1, 2019
Administrative - Formal
Clean Air Act
· Case 3602499334 · Nov 6, 2018
$9,925
Notice of Violation
Clean Air Act
· Case 3602506576 · Nov 30, 2017
Notice of Violation
Clean Air Act
· Case 3602506307 · Mar 6, 2017
Administrative - Formal
Clean Air Act
· Case 3602499103 · Mar 2, 2017
$9,900
Notice of Violation
Clean Air Act
· Case 3602506127 · Jun 7, 2016
Judicial
· Case 03-2013-7013 · Nov 13, 2015
$1,375,000
Civil Judicial Action
Clean Water Act
· Case PA-0027103_08212015 · Aug 21, 2015
$688,352
State CWA Penalty AO
Clean Water Act
· Case PA-0027103_07102012 · Jul 10, 2012
$1,500
State CWA Penalty AO
Clean Water Act
· Case PA-0027103_06122012 · Jun 12, 2012
$5,436
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