Clean Water Act discharge permit · NPDES LA0020354

ZWOLLE TOWN OF - MUNICIPAL WASTEWATER FACILITY, Zwolle, LA: NPDES LA0020354 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
7Pollutants under a numeric limit
4Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

ZWOLLE TOWN OF - MUNICIPAL WASTEWATER FACILITY, held by ZWOLLE, TOWN OF, holds NPDES permit LA0020354, which discharges to 11b. EPA’s file records it issued August 14, 2018 and expiring August 31, 2023.

ZWOLLE TOWN OF - MUNICIPAL WASTEWATER FACILITY, Zwolle, Louisiana: Individual permit LA0020354, held by ZWOLLE, TOWN OF; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued August 14, 2018, term to August 31, 2023; discharges to 11B.

BOD, 5-day, 20 deg. C: 6 limits, 166 violations of any kind, 131 effluent exceedances, latest June 30, 2026, largest 1,070% over the limit.
Solids, total suspended: 6 limits, 147 violations of any kind, 112 effluent exceedances, latest June 30, 2026, largest 807% over the limit.
Coliform, fecal general: 4 limits, 68 violations of any kind, 58 effluent exceedances, latest January 31, 2026, largest 99,999% over the limit.
pH: 4 limits, 15 violations of any kind, 5 effluent exceedances, latest June 30, 2026.
Flow, in conduit or thru treatment plant: 4 limits, 32 violations of any kind, 0 effluent exceedances.
Nitrogen, total [as N]: 3 limits, 5 violations of any kind, 0 effluent exceedances.
Phosphorus, total [as P]: 3 limits, 5 violations of any kind, 0 effluent exceedances.

May 20, 2026: Phone Call/ EMAIL (State).
August 7, 2024: Management Practice Violations - Improper Operation and Maintenance (ST6).
August 7, 2024: Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements (ST6).
August 7, 2024: Reporting Violations - Improper/ Incorrect Reporting (ST6).
March 4, 2023: Permit Violations - Failure to Submit Timely Permit Renewal Application (ST6).
December 31, 2021: Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) (ST6).
October 28, 2019: Reporting Violations - Improper/ Incorrect Reporting (ST6).
October 28, 2019: Management Practice Violations - Failure to Maintain Records (ST6).
October 28, 2019: Permit Violations - Violation Specified in Comment (ST6).
December 31, 2017: Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) (ST6).

Louisiana holds 357 Publicly owned treatment works coverages of this permit type in EPA’s file; 238 were issued before LA0020354.

Coverages issued nearest LA0020354

June 5, 2018: CLAIBORNE PARISH DETENTION CTR, Homer, LA0111163, held by CLAIBORNE PARISH DETENTION
June 15, 2018: GRETNA, CITY OF- WASTEWATER TREATMENT PLANT, Gretna, LA0041262, held by City of Gretna- Wastewater Treatment Plant
June 20, 2018: RAPIDES PARISH SEWER DISTRICT NO.1 - PENNY ACRES SUBDIVISION WWTP, Alexandria, LA0038989, held by RAPIDES PARISH SEWER DIST. #1- Penny Acres Subdivision
June 20, 2018: MORGAN CITY CITY OF - CITY OF MORGAN CITY WASTEWATER TREATMENT PLANT, Morgan City, LA0065986, held by City of Morgan City- Wastewater Treatment Facility
August 3, 2018: ST MARTINVILLE CITY OF - STP, St. Martinville, LA0040941, held by City of St. Martinville
August 14, 2018: ARNAUDVILLE, TOWN OF, Arnaudville, LA0046639
August 14, 2018: ST. MARTIN PARISH INDUSTRIAL PARK, Broussard, LA0122718, held by ST MARTIN PARISH GOVERNMENT
August 17, 2018: BATON ROUGE, CITY OF, Baton Rouge, LA0036412, held by E BATON ROUGE CITY-PAR (SOUTH)
August 17, 2018: BATON ROUGE, CITY OF, Scotlandville, LA0036439, held by E BATON ROUGE CITY-PAR (NORTH)
August 17, 2018: SLIDELL CITY OF - TERRACE AVENUE WWTP, Slidell, LA0047180, held by City of Slidell

ZWOLLE TOWN OF - MUNICIPAL WASTEWATER FACILITY among its neighbors

EPA’s permit file holds 3 discharge permits in the Scie Bayou subwatershed (HUC 120100040503), LA0020354 among them. Its county holds 23, 0 of them major permits; LA0020354 is a minor permit.

Other permits in the Scie Bayou subwatershed (HUC 120100040503)

NEW CREATION MINISTRIES INC - HOLY WATER CAR WASH, Zwolle: LAG751263, minor permit, permit term to April 25, 2029
WEYERHAEUSER NR CO - ZWOLLE PLYWOOD & SAWMILL, Zwolle: LA0080764, minor permit, permit term to October 31, 2024

Identity

Facility as filed	ZWOLLE TOWN OF - MUNICIPAL WASTEWATER FACILITY
Permittee as filed	ZWOLLE, TOWN OF
NPDES ID	LA0020354
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	August 14, 2018
Expiration date	August 31, 2023
Address	Zwolle, LA 71486
Receiving water	11B
Subwatershed	Scie Bayou (HUC 120100040503)

Effluent limits and exceedances

7Pollutants on file
7Under a numeric limit
7With a violation of any kind
4With an effluent exceedance

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
BOD, 5-day, 20 deg. C	6	166	131	June 30, 2026	1,070% over the limit
Solids, total suspended	6	147	112	June 30, 2026	807% over the limit
Coliform, fecal general	4	68	58	January 31, 2026	99,999% over the limit
pH	4	15	5	June 30, 2026
Flow, in conduit or thru treatment plant	4	32	0
Nitrogen, total [as N]	3	5	0
Phosphorus, total [as P]	3	5	0

Inspections, violations and enforcement

9Single-event violations

Date	What EPA recorded	Agency
August 7, 2024	Management Practice Violations - Improper Operation and Maintenance	ST6
August 7, 2024	Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements	ST6
August 7, 2024	Reporting Violations - Improper/ Incorrect Reporting	ST6
March 4, 2023	Permit Violations - Failure to Submit Timely Permit Renewal Application	ST6
December 31, 2021	Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)	ST6
October 28, 2019	Reporting Violations - Improper/ Incorrect Reporting	ST6
October 28, 2019	Management Practice Violations - Failure to Maintain Records	ST6
October 28, 2019	Permit Violations - Violation Specified in Comment	ST6
December 31, 2017	Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)	ST6

Inspections

EPA’s inspection file holds no inspection for NPDES LA0020354.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

Date	What EPA recorded	Agency
May 20, 2026	Phone Call/ EMAIL	State

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, LA0020354.

Start the watch

How we handle your data → Privacy

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

This public-records page covers NPDES permit LA0020354, held by ZWOLLE, TOWN OF for the ZWOLLE TOWN OF - MUNICIPAL WASTEWATER FACILITY in Zwolle, LA, and lists its status as administratively continued. The page shows 7 pollutants on file, 7 under a numeric limit, and 4 with an effluent exceedance.