Environmental compliance · county

Environmental compliance in Delaware County

1,406 active EPA-regulated sites in Delaware County, Pennsylvania: 81 with an identified violation, 18 in significant violation, 924 inspections and $4.1 million in penalties over five years — EPA ECHO, as of October 18, 2026.

Cite: FACTANKER, https://factanker.com/us/pa/delaware-county/environmental-compliance

How many facilities in Delaware County, Pennsylvania are regulated by the EPA, and how many are in violation (as of October 18, 2026)?

Measure	Value
Active EPA-regulated sites	1,406
Sites with an identified violation	81
Sites in significant violation	18
Inspections and evaluations, last 5 years	924
Formal enforcement actions, last 5 years	96
Penalties, last 5 years (shared federal cases once)	$4.1 million

How many active facilities in Delaware County, Pennsylvania fall under each EPA program?

A facility can be in several programs.

Program	Active sites
Air (Clean Air Act)	308
Water discharge permits (Clean Water Act, NPDES)	570
Hazardous waste (RCRA)	700
Drinking water systems (SDWA)	36
Toxics Release Inventory reporters	18
Greenhouse gas reporters (GHGRP)	7

Which large facilities in Delaware County, Pennsylvania does the EPA track, and are they in violation?

Facility	Compliance status	Quarters in violation (of 12)	Penalties, 5 years
MONROE ENERGY, LLC - TRAINER REFINERY Trainer, PA	Significant Violation	12	$86,480
ENERGY TRANSFER MKT & TERM LP/TANK FARM 2 Aston, PA	Significant Violation	8	–
MIPC LLC / CHELSEA TANK FARM Aston, PA	Significant Violation	6	–
PECO - EDDYSTONE GENERATING STATION Eddystone, PA	Significant Violation	4	$9,082
KIMBERLY-CLARK PENNSYLVANIA L LC Chester, PA	Significant Violation	3	$13,200
CONCORD TWP CENTRAL STP Glen Mills, PA	Violation Identified	12	–
MARCUS HOOK TERMINAL Marcus Hook, PA	Violation	12	$2,500
COVANTA DELAWARE VALLEY LP - DELAWARE VALLEY RES REC Chester, PA	Violation Identified	10	$270,967
EVONIK CORP/CHESTER Chester, PA	Violation Identified	10	$1,875
DELCORA TREATMENT PLANT - WRTP Chester, PA	Unknown	8	$62,075
ENERGY TRANSFER MARCUS HOOK TERMINAL Marcus Hook, PA	Violation Identified	8	$766,996
BOEING INTEGRATED DEFENSE SYSTEMS GROUP ROTOTCRAFT Ridley Park, PA	Violation Identified	7	–
BRASKEM AMER INC/MARCUS HOOK Marcus Hook, PA	No Violation Identified	5	$2,700
TINICUM TOWNSHIP WTP Lester, PA	Violation Identified	5	–
AQUA PA MEDIA STP Media, PA	Violation Identified	3	–
CONGOLEUM CORP/TRAINER PLT Trainer, PA	Violation Identified	2	–
EXELON GENERATION CO/CHESTER Chester, PA	No Violation Identified	0	–
FPL ENERGY MARCUS HOOK LP/750 MW Marcus Hook, PA	No Violation Identified	0	$57,780
LAUREL PIPELINE CO LP/BOOTHWYN BREAKOUT STATION Boothwyn, PA	No Violation Identified	0	–
LIBERTY ELEC POWER EDDYSTONE FAC Eddystone, PA	No Violation Identified	0	$440
PQ CORPORATION Chester, PA	No Violation Identified	0	$4,520
VILLANOVA UNIV/MAIN CAMPUS Villanova, PA	No Violation Identified	0	–

All figures for Delaware County · Pennsylvania · United States

EPA Enforcement and Compliance History Online (ECHO), weekly national export. Counts cover active sites in the Facility Registry Service; inspections, formal actions and penalties cover the last five years, quarters in violation the last three years. The EPA attributes a case that covers several facilities to each of them; area penalty totals here count an amount shared through the same federal case once, facility figures show the amount attributed to that facility. Large facilities are Clean Air Act majors, Clean Water Act majors and large hazardous waste generators or handlers. Source record.

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