Clean Water Act discharge permit · NPDES IL0030384

OTTAWA WWTP, CITY OF, Ottawa, IL: NPDES IL0030384 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MajorDischarger class
31Pollutants under a numeric limit
6Pollutants with an effluent exceedance

OTTAWA WWTP, CITY OF, held by OTTAWA, CITY OF, holds NPDES permit IL0030384, which discharges to Illinois River. EPA’s file records it issued July 29, 2020 and expiring July 31, 2025. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	OTTAWA WWTP, CITY OF
Permittee as filed	OTTAWA, CITY OF
NPDES ID	IL0030384
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Major discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	July 29, 2020
Expiration date	July 31, 2025
Address	Ottawa, IL 61350
Receiving water	ILLINOIS RIVER
Receiving water impaired	303(D) Listed
Subwatershed	Wallbridge Creek-Illinois River (HUC 071200050803)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

77Pollutants on file
31Under a numeric limit
76With 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; the 60 with the most exceedances of 77 are shown.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Coliform, fecal general	1	12	11	May 31, 2020	99,999% over the limit
Chlorine, total residual	2	11	10	May 31, 2025	380% over the limit
Solids, total suspended	5	11	6	April 30, 2024	139% over the limit
Copper, total [as Cu]	6	7	5	February 28, 2026	45% over the limit
Nitrogen, ammonia total [as N]	1	4	4	November 30, 2013	153% over the limit
BOD, carbonaceous [5 day, 20 C]	4	9	1	August 31, 2007	11% over the limit
Rainfall	0	33	0
Overflows	14	14	0
Rainfall duration	0	14	0
Duration	0	14	0
Flow	0	9	0
Flow, in conduit or thru treatment plant	4	4	0
pH	2	2	0
Oil & Grease	2	2	0
Cyanide, total [as CN]	2	2	0
Fluoride, total [as F]	2	2	0
Arsenic, total [as As]	2	2	0
Barium, total [as Ba]	2	2	0
Cadmium, total [as Cd]	2	2	0
Chromium, hexavalent [as Cr]	2	2	0
Chromium, total [as Cr]	2	2	0
Iron, total [as Fe]	2	2	0
Iron, dissolved [as Fe]	2	2	0
Lead, total [as Pb]	2	2	0
Manganese, total [as Mn]	2	2	0
Nickel, total [as Ni]	2	2	0
Silver, total [as Ag]	2	2	0
Zinc, total [as Zn]	2	2	0
Selenium, total [as Se]	2	2	0
Phenolics, total recoverable	2	2	0
Mercury, total [as Hg]	2	2	0
Nitrogen, total [as N]	1	2	0
Phosphorus, total [as P]	1	2	0
Cyanide, weak acid, dissociable	0	2	0
Perfluorooctanoic acid (PFOA)	0	2	0
Perfluorobutanoic acid (PFBA)	0	2	0
Perfluorooctanesulfonamide (PFOSA)	0	2	0
Perfluoropentanoic acid (PFPeA)	0	2	0
Perfluorohexanoic acid (PFHxA)	0	2	0
Perfluoroheptanoic acid (PFHpA)	0	2	0
Perfluorononanoic acid (PFNA)	0	2	0
Perfluorodecanoic acid (PFDA)	0	2	0
Perfluoroundecanoic acid (PFUnA)	0	2	0
Perfluorododecanoic acid (PFDoA)	0	2	0
Perfluorotridecanoic acid (PFTrDA)	0	2	0
Perfluorotetradecanoic acid (PFTeDA)	0	2	0
N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)	0	2	0
N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)	0	2	0
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)	0	2	0
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)	0	2	0
Perfluorobutanesulfonic acid (PFBS)	0	2	0
Perfluorodecanesulfonic acid (PFDS)	0	2	0
Perfluoroheptanesulfonic acid (PFHpS)	0	2	0
Perfluorohexanesulfonic acid (PFHxS)	0	2	0
Perfluorooctanesulfonic acid (PFOS)	0	2	0
1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)	0	2	0
1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)	0	2	0
1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)	0	2	0
Perfluoropentanesulfonic acid (PFPeS)	0	2	0
Perfluorononanesulfonic acid (PFNS)	0	2	0

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES IL0030384.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID IL0030384 there.

Nearby on the register

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