EPA-regulated facilities in Ouachita Parish, LA

There are 1,688 EPA-regulated facilities inside Ouachita Parish, Louisiana. The most common kinds are water discharge (913), hazardous waste (632), air emissions (182). 55 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 86 have a violation on record. Penalties over the last five years total $638k across 18 sites.

Open the map of Ouachita Parish

1,688facilities in the county

55in significant noncompliance

86with a violation on record

$638kin penalties, last 5 years

By category

Category	Facilities
Hazardous waste	632
Treatment, storage or disposal	1
Large quantity generators	10
Small quantity generators	492
Transporters	11
Chemical (RMP/TRI)	41
Air emissions	182
Major sources	20
Synthetic minor sources	1
Minor sources	90
Water discharge	913
Major permits	6
Minor permits	811
Drinking water systems	67
Greenhouse gas reporters	15
Scrap yards	3
Recycling centers	1

A facility enrolled in several programs counts once in the total and once in each of its categories.

In significant noncompliance

The EPA's designation for its most serious or persistent violations, as of the latest data.

MAGNOLIA WATER UTILITY OPERATING CO., LLC - PATRICK'S COVE WWTF 150 PATRICK'S COVE, CALHOUN, LA, 71292 Significant noncompliance · $2k in penalties
MARKET CROSS MONROE MHP, LLC - PECANLAND MOBILE HOME & RV PARK 2300 GARRETT RD, MONROE, LA, 70000 Significant noncompliance · $2k in penalties
PARKWOOD SUBDIVISION .25 MI E OF HWY 139 ON ROWLAND RD, MONROE, LA, 71211 Significant noncompliance · $2k in penalties
CITY OF WEST MONROE WASTEWATER TREATMENT PLANT 250 EAST MARTIN, WEST MONROE, LA, 71292 Significant noncompliance · $400 in penalties
BANKS STEAM CLEANING SVC STATEWIDE, STATEWIDE, LA, 70000 Significant noncompliance
TYSON MHP 104 LA HWY 557, WEST MONROE, LA, 71292 Significant noncompliance
SETPOINT INTEGRATED SOLUTIONS INC - MONROE FACILITY 203 EXCHANGE ST, WEST MONROE, LA, 71292 Significant noncompliance
OUACHITA PH SCHOOL BOARD 100 BRY ST, MONROE, LA, 71201 Significant noncompliance
OUACHITA RV PARK, LLC 7300 FRONTAGE RD, WEST MONROE, LA, 71291 Significant noncompliance
WEST MONROE CITY OF - MUNICIPAL SEPARATE STORM SEWER SYSTEM MUNICIPAL STORM SEWER SYSTEM, WEST MONROE, LA, 71291 Significant noncompliance

Largest penalties

Penalties assessed over the last five years.

HOME DEPOT STORE #366 3750 MILLHAVEN RD, MONROE, LA, 71203 $285k in penalties
LOWE'S OF MONROE, LA (450) 4750 FRONTAGE ROAD, MONROE, LA, 71202 $142k in penalties
GRAPHIC PACKAGING INTERNATIONAL, INC - WEST MONROE 1000 JONESBORO ROAD, WEST MONROE, LA, 71294 $121k in penalties
PINE HILLS SUBDIVISION END OF PINE HILLS DR., CALHOUN, LA, 70000 $20k in penalties
L&R UTILITIES INC-HIDDEN OAK 239 DOLLY DR, MONROE, LA, 71203 $20k in penalties

Towns in Ouachita Parish

Bordering counties

Reading these numbers

These are regulatory records, not measurements of pollution. Most facilities appear because they hold a permit or file reports, and most of them are compliant; a listing is not a claim that a facility has polluted anything. Compliance status and penalties are the EPA's own determinations in data retrieved Oct 9, 2026. The Data page explains where each record comes from and how it can mislead.