Clean Water Act discharge permit · NPDES IN0021067

ROCKPORT SOUTH WWTP, Rockport, IN: NPDES IN0021067 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
13Pollutants under a numeric limit
6Pollutants with an effluent exceedance
3Inspections on file
0Formal enforcement actions

ROCKPORT SOUTH WWTP holds NPDES permit IN0021067, which discharges to Ohio River. EPA’s file records it issued October 8, 2020 and expiring April 30, 2026.

ROCKPORT SOUTH WWTP, Rockport, Indiana: Individual permit IN0021067; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued October 8, 2020, term to April 30, 2026, by IDEM; discharges to OHIO RIVER.

Solids, total suspended: 4 limits, 33 violations of any kind, 25 effluent exceedances, latest March 31, 2024, largest 320% over the limit.
BOD, carbonaceous [5 day, 20 C]: 4 limits, 16 violations of any kind, 4 effluent exceedances, latest March 31, 2004, largest 1,954% over the limit.
Chlorine, total residual: 0 limits, 23 violations of any kind, 3 effluent exceedances, latest June 30, 2008, largest 133% over the limit.
Nitrogen, ammonia total [as N]: 8 limits, 3 violations of any kind, 3 effluent exceedances, latest July 31, 2024, largest 68% over the limit.
E. coli, colony forming units [CFU]: 3 limits, 3 violations of any kind, 3 effluent exceedances, latest July 31, 2025, largest 772% over the limit.
pH: 2 limits, 8 violations of any kind, 1 effluent exceedance, latest April 30, 2006.
Flow, in conduit or thru treatment plant: 1 limit, 6 violations of any kind, 0 effluent exceedances.
Flow, total: 1 limit, 4 violations of any kind, 0 effluent exceedances.
BOD, carb-5 day, 20 deg C, percent removal: 0 limits, 4 violations of any kind, 0 effluent exceedances.
Solids, suspended percent removal: 0 limits, 4 violations of any kind, 0 effluent exceedances.
Duration: 1 limit, 2 violations of any kind, 0 effluent exceedances.
Overflow volume [SS0 volume, CSO volume]: 1 limit, 2 violations of any kind, 0 effluent exceedances.
Precipitation, monthly accumulation: 1 limit, 2 violations of any kind, 0 effluent exceedances.
Flow, wastewater by-passing trtmnt plant: 0 limits, 2 violations of any kind, 0 effluent exceedances.
Bypass valve: 0 limits, 2 violations of any kind, 0 effluent exceedances.
Discharge event observation [Visual Monitoring]: 1 limit, 1 violation of any kind, 0 effluent exceedances.
Number of Events: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Coliform, fecal general: 1 limit, 0 violations of any kind, 0 effluent exceedances.

May 27, 2026: Reconnaissance without Sampling (S).
February 3, 2026: Management Practice Violations - Best Management Practice Deficiencies (ST6).
February 3, 2026: Management Practice Violations - Improper Operation and Maintenance (ST6).
February 3, 2026: Evaluation (S).
February 3, 2026: Evaluation (S).
February 3, 2026: Notice of Noncompliance Issued (State).

Indiana holds 541 Publicly owned treatment works coverages of this permit type in EPA’s file; 466 were issued before IN0021067.

Coverages issued nearest IN0021067

September 24, 2020: TAYLOR TOWNSHIP RSD, Center, IN0062375
September 24, 2020: PLAINFIELD SOUTH WWTP, TOWN OF, Plainfield, IN0062456
October 1, 2020: BLOOMFIELD MUNICIPAL WWTP, Bloomfield, IN0022373
October 1, 2020: SWITZ CITY MUNICIPAL WWTP, Switz City, IN0042650, held by SWITZ CITY WWTP, TOWN OF
October 1, 2020: PICNIC WOODS DEVELOPMENT, Lawrenceburg, IN0053759
October 8, 2020: PERU UTILITIES WWTP, Peru, IN0032328
October 15, 2020: SCOTTSBURG WWTP, Scottsburg, IN0020397
October 15, 2020: ROCKVILLE WWTP, Rockville, IN0024449, held by ROCKVILLE MUNICIPAL WWTP
October 15, 2020: CAYUGA MUNICIPAL WWTP, Cayuga, IN0060461
October 22, 2020: NEW MARKET WWTP, New Market, IN0021041

ROCKPORT SOUTH WWTP among its neighbors

EPA’s permit file holds 5 discharge permits in the City of Rockport-Ohio River subwatershed (HUC 051402010805), IN0021067 among them. Its county holds 30, 3 of them major permits; IN0021067 is a minor permit.

Other permits in the City of Rockport-Ohio River subwatershed (HUC 051402010805)

CITY OF ROCKPORT - BOAT RAMP, Rockport: INRA16583, minor permit, permit term to August 6, 2030
CITY OF ROCKPORT WASTEWATER LTCP PHASE 4 PROJECT - DIVISION A AND B, Rockport: INRA13778, minor permit, permit term to April 29, 2029
GRANDVIEW MUNICIPAL WWTP, Grandview: IN0038300, minor permit, discharging to OHIO RIVER, permit term to October 31, 2024
MULZER CRUSHED STONE INC, Rockport: INRM00030, minor permit, discharging to Ohio River, permit term to November 3, 2025

Identity

Facility as filed	ROCKPORT SOUTH WWTP
Permittee as filed	ROCKPORT SOUTH WWTP
NPDES ID	IN0021067
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	October 8, 2020
Expiration date	April 30, 2026
Issuing agency	IDEM
Address	Rockport, IN 47635
Receiving water	OHIO RIVER
Subwatershed	City of Rockport-Ohio River (HUC 051402010805)

Effluent limits and exceedances

18Pollutants on file
13Under a numeric limit
16With a violation of any kind
6With 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
Solids, total suspended	4	33	25	March 31, 2024	320% over the limit
BOD, carbonaceous [5 day, 20 C]	4	16	4	March 31, 2004	1,954% over the limit
Chlorine, total residual	0	23	3	June 30, 2008	133% over the limit
Nitrogen, ammonia total [as N]	8	3	3	July 31, 2024	68% over the limit
E. coli, colony forming units [CFU]	3	3	3	July 31, 2025	772% over the limit
pH	2	8	1	April 30, 2006
Flow, in conduit or thru treatment plant	1	6	0
Flow, total	1	4	0
BOD, carb-5 day, 20 deg C, percent removal	0	4	0
Solids, suspended percent removal	0	4	0
Duration	1	2	0
Overflow volume [SS0 volume, CSO volume]	1	2	0
Precipitation, monthly accumulation	1	2	0
Flow, wastewater by-passing trtmnt plant	0	2	0
Bypass valve	0	2	0
Discharge event observation [Visual Monitoring]	1	1	0
Number of Events	2	0	0
Coliform, fecal general	1	0	0

Inspections, violations and enforcement

2Single-event violations

Date	What EPA recorded	Agency
February 3, 2026	Management Practice Violations - Best Management Practice Deficiencies	ST6
February 3, 2026	Management Practice Violations - Improper Operation and Maintenance	ST6

Inspections

Date	What EPA recorded	Agency
May 27, 2026	Reconnaissance without Sampling	S
February 3, 2026	Evaluation	S
February 3, 2026	Evaluation	S

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
February 3, 2026	Notice of Noncompliance Issued	State

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

This public-records page covers NPDES permit IN0021067 for ROCKPORT SOUTH WWTP in Rockport, IN, which discharges to the OHIO RIVER and is administratively continued past its April 30, 2026 expiration date. The page lists 18 pollutants on file, 13 under a numeric limit, 16 with a violation of any kind, and 6 with an effluent exceedance.