BENTON, CITY OF — NPDES permit IL0022365: limits, due date and EPA's record

NPDES permit IL0022365 · Major POTW · effective, expires 2027-08-31 · EPA's file as of 2026-09-19

EPA's record, 2025-09-01 to 2026-08-31

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (3), Phosphorus, total [as P] (2).

Reporting

Reports are due about 25 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (100)

Outfall	Parameter	Statistic	Limit	Months
002	BOD, 5-day, 20 deg. C	DAILY MX	report only	all year
002	Solids, total suspended	DAILY MX	report only	all year
002	Coliform, fecal general	DAILY MX	report only	all year
002	Flow	MO TOTAL	report only	all year
003	BOD, 5-day, 20 deg. C	MO AVG	<= 30 mg/L	all year
003	BOD, 5-day, 20 deg. C	WKLY AVG	<= 45 mg/L	all year
003	pH	MINIMUM	>= 6 SU	all year
003	pH	MAXIMUM	<= 9 SU	all year
003	Solids, total suspended	MO AVG	<= 30 mg/L	all year
003	Solids, total suspended	WKLY AVG	<= 45 mg/L	all year
003	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
003	Phosphorus, total [as P]	DAILY MX	report only	all year
003	Chlorine, total residual	MO AVG	<= .75 mg/L	all year
003	Coliform, fecal general	DAILY MX	<= 400 #/100mL	all year
003	Flow, total	MO TOTAL	report only	all year
004	Oxygen, dissolved [DO]	MO AV MN	>= 5.5 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec
004	Oxygen, dissolved [DO]	MN WK AV	>= 4 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec
004	Oxygen, dissolved [DO]	MN WK AV	>= 6 mg/L	Mar, Apr, May, Jun, Jul
004	Oxygen, dissolved [DO]	DAILY MN	>= 3.5 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec
004	Oxygen, dissolved [DO]	DAILY MN	>= 5 mg/L	Mar, Apr, May, Jun, Jul
004	pH	MINIMUM	>= 6 SU	all year
004	pH	MAXIMUM	<= 9 SU	all year
004	Solids, total suspended	MO AVG	<= 12 mg/L	all year
004	Solids, total suspended	DAILY MX	<= 24 mg/L	all year
004	Solids, total suspended	MO AVG	<= 495 lb/d	all year
004	Solids, total suspended	DAILY MX	<= 991 lb/d	all year
004	Oil & Grease	DAILY MX	report only	all year
004	Oil & Grease	DAILY MX	report only	all year
004	Nitrogen, total [as N]	MO AVG	report only	all year
004	Nitrogen, total [as N]	DAILY MX	report only	all year
004	Nitrogen, ammonia total [as N]	MO AVG	<= 2.3 mg/L	Mar, Apr, May, Sep, Oct
004	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Jun, Jul, Aug
004	Nitrogen, ammonia total [as N]	MO AVG	<= 4 mg/L	Jan, Feb, Nov, Dec
004	Nitrogen, ammonia total [as N]	DAILY MX	<= 14 mg/L	Mar, Apr, May, Sep, Oct
004	Nitrogen, ammonia total [as N]	DAILY MX	<= 9.2 mg/L	Jun, Jul, Aug
004	Nitrogen, ammonia total [as N]	DAILY MX	<= 6.9 mg/L	Jan, Feb, Nov, Dec
004	Nitrogen, ammonia total [as N]	MO AVG	<= 95 lb/d	Mar, Apr, May, Sep, Oct
004	Nitrogen, ammonia total [as N]	MO AVG	<= 62 lb/d	Jun, Jul, Aug
004	Nitrogen, ammonia total [as N]	MO AVG	<= 165 lb/d	Jan, Feb, Nov, Dec
004	Nitrogen, ammonia total [as N]	DAILY MX	<= 578 lb/d	Mar, Apr, May, Sep, Oct
004	Nitrogen, ammonia total [as N]	DAILY MX	<= 380 lb/d	Jun, Jul, Aug
004	Nitrogen, ammonia total [as N]	DAILY MX	<= 285 lb/d	Jan, Feb, Nov, Dec
004	Nitrogen, ammonia total [as N]	WKLY AVG	<= 3.8 mg/L	Jun, Jul, Aug
004	Nitrogen, ammonia total [as N]	WKLY AVG	<= 5.6 mg/L	Mar, Apr, May, Sep, Oct
004	Nitrogen, ammonia total [as N]	WKLY AVG	<= 157 lb/d	Jun, Jul, Aug
004	Nitrogen, ammonia total [as N]	WKLY AVG	<= 231 lb/d	Mar, Apr, May, Sep, Oct
004	Phosphorus, total [as P]	MO AVG	<= 1 mg/L	all year
004	Phosphorus, total [as P]	DAILY MX	report only	all year
004	Phosphorus, total [as P]	MO AVG	<= 41 lb/d	all year
004	Phosphorus, total [as P]	DAILY MX	report only	all year
004	Cyanide, total [as CN]	DAILY MX	report only	all year
004	Cyanide, total [as CN]	DAILY MX	report only	all year
004	Cyanide, free [amenable to chlorination]	DAILY MX	report only	all year
004	Cyanide, free [amenable to chlorination]	DAILY MX	report only	all year
004	Fluoride, total [as F]	DAILY MX	report only	all year
004	Fluoride, total [as F]	DAILY MX	report only	all year
004	Arsenic, total [as As]	DAILY MX	report only	all year
004	Arsenic, total [as As]	DAILY MX	report only	all year
004	Barium, total [as Ba]	DAILY MX	report only	all year
004	Barium, total [as Ba]	DAILY MX	report only	all year
004	Cadmium, total [as Cd]	DAILY MX	report only	all year
004	Cadmium, total [as Cd]	DAILY MX	report only	all year
004	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
004	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
004	Chromium, total [as Cr]	DAILY MX	report only	all year
004	Chromium, total [as Cr]	DAILY MX	report only	all year
004	Copper, total [as Cu]	DAILY MX	report only	all year
004	Copper, total [as Cu]	DAILY MX	report only	all year
004	Iron, total [as Fe]	DAILY MX	report only	all year
004	Iron, total [as Fe]	DAILY MX	report only	all year
004	Iron, dissolved [as Fe]	DAILY MX	report only	all year
004	Iron, dissolved [as Fe]	DAILY MX	report only	all year
004	Lead, total [as Pb]	DAILY MX	report only	all year
004	Lead, total [as Pb]	DAILY MX	report only	all year
004	Manganese, total [as Mn]	DAILY MX	report only	all year
004	Manganese, total [as Mn]	DAILY MX	report only	all year
004	Nickel, total [as Ni]	DAILY MX	report only	all year
004	Nickel, total [as Ni]	DAILY MX	report only	all year
004	Silver, total [as Ag]	DAILY MX	report only	all year
004	Silver, total [as Ag]	DAILY MX	report only	all year
004	Zinc, total [as Zn]	DAILY MX	report only	all year
004	Zinc, total [as Zn]	DAILY MX	report only	all year
004	Selenium, total [as Se]	DAILY MX	report only	all year
004	Selenium, total [as Se]	DAILY MX	report only	all year
004	Phenolics, total recoverable	DAILY MX	report only	all year
004	Phenolics, total recoverable	DAILY MX	report only	all year
004	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
004	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
004	Chlorine, total residual	DAILY MX	<= .038 mg/L	all year
004	Mercury, total [as Hg]	DAILY MX	report only	all year
004	Mercury, total [as Hg]	DAILY MX	report only	all year
004	Coliform, fecal general	DAILY MX	<= 400 #/100mL	May, Jun, Jul, Aug, Sep, Oct
004	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 10 mg/L	all year
004	BOD, carbonaceous [5 day, 20 C]	DAILY MX	<= 20 mg/L	all year
004	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 413 lb/d	all year
004	BOD, carbonaceous [5 day, 20 C]	DAILY MX	<= 826 lb/d	all year
INF	BOD, 5-day, 20 deg. C	MO AVG	report only	all year
INF	Solids, total suspended	MO AVG	report only	all year
INF	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
INF	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year