Environmental compliance · county

Environmental compliance in Jefferson Parish

2,519 active EPA-regulated sites in Jefferson Parish, Louisiana: 114 with an identified violation, 67 in significant violation, 209 inspections and $2.2 million in penalties over five years — EPA ECHO, as of October 18, 2026.

Cite: FACTANKER, https://factanker.com/us/la/jefferson-parish/environmental-compliance

How many facilities in Jefferson Parish, Louisiana are regulated by the EPA, and how many are in violation (as of October 18, 2026)?

Measure	Value
Active EPA-regulated sites	2,519
Sites with an identified violation	114
Sites in significant violation	67
Inspections and evaluations, last 5 years	209
Formal enforcement actions, last 5 years	116
Penalties, last 5 years (shared federal cases once)	$2.2 million

How many active facilities in Jefferson Parish, Louisiana fall under each EPA program?

A facility can be in several programs.

Program	Active sites
Air (Clean Air Act)	172
Water discharge permits (Clean Water Act, NPDES)	499
Hazardous waste (RCRA)	2,122
Drinking water systems (SDWA)	9
Toxics Release Inventory reporters	14
Greenhouse gas reporters (GHGRP)	7

Which large facilities in Jefferson Parish, Louisiana does the EPA track, and are they in violation?

Facility	Compliance status	Quarters in violation (of 12)	Penalties, 5 years
CITY OF WESTWEGO WATER TREATMENT PLANT Westwego, LA	Significant Violation	12	–
CORNERSTONE CHEMICAL CO LLC Waggaman, LA	Significant Violation	10	$122,114
HARAHAN CITY OF - CITY OF HARAHAN WWTP Harahan, LA	Significant Violation	7	–
CITY OF KENNER WASTEWATER TREATMENT PLANT Kenner, LA	Significant Violation	6	–
JEFFERSON PARISH DEPARTMENT OF SEWERAGE- HARVEY WWTP Harvey, LA	Significant Violation	3	–
JEFFERSON PARISH DEPARTMENT OF SEWERAGE- MARRERO WWTP Marrero, LA	Significant Violation	2	–
RIVER BIRCH INC - RIVER BIRCH LANDFILL Avondale, LA	Violation Identified	8	$4,933
GRETNA CITY OF WASTEWATER TREATMENT PLANT Gretna, LA	Violation Identified	6	–
BLACKWATER HARVEY LLC Harvey, LA	No Violation Identified	3	–
JEFFERSON PARISH SANITARY LANDFILL Avondale, LA	No Violation Identified	3	$634,300
NINEMILE 6 PLANT Westwego, LA	Violation Identified	3	–
BRIDGE CITY WASTEWATER TREATMENT PLANT Bridge City, LA	Violation Identified	2	–
DYNO NOBEL LOUISIANA AMMONIA, LLC Waggaman, LA	No Violation Identified	0	$23,112
GRETNA, CITY OF Gretna, LA	No Violation Identified	0	–
JEFFERSON PARISH DEPARTMENT OF SEWERAGE- EAST BANK WWTP Elmwood, LA	No Violation Identified	0	$43,660
JEFFERSON PARISH EAST BANK WWTP Harahan, LA	No Violation Identified	0	–
KEMIRA WATER SOLUTIONS INC - ACRYLAMIDE PLANT Waggaman, LA	No Violation Identified	0	$1,250
KENNER WWTP#1 Kenner, LA	No Violation Identified	0	–
KENNER WWTP#2 Kenner, LA	No Violation Identified	0	–
MARRERO WASTEWATER TREATMENT PLANT Marrero, LA	No Violation Identified	0	–
WESTWEGO, CITY OF Westwego, LA	No Violation Identified	0	–

All figures for Jefferson Parish · Louisiana · 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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