FOUR RIVERS SANITATION AUTHORITY — NPDES permit IL0027201: limits, due date and EPA's record

NPDES permit IL0027201 · Major POTW · administratively continued, expires 2024-08-31 · EPA's file as of 2026-09-19

This permit expired on 2024-08-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

Last period with anything received: 2026-07-31. Most often over: Coliform, fecal general (1).

Reporting

Reports are due about 25 days after each monitoring period ends (the most common figure among IL permits in EPA's filings — check your permit).

Limits in force (214)

Outfall	Parameter	Statistic	Limit	Months
001	pH	MINIMUM	>= 6 SU	all year
001	pH	MAXIMUM	<= 9 SU	all year
001	Solids, total suspended	MO AVG	<= 25 mg/L	all year
001	Solids, total suspended	WKLY AVG	<= 45 mg/L	all year
001	Solids, total suspended	MO AVG	<= 16680 lb/d	all year
001	Solids, total suspended	WKLY AVG	<= 30024 lb/d	all year
001	Oil & Grease	DAILY MX	report only	all year
001	Oil & Grease	DAILY MX	report only	all year
001	Nitrogen, total [as N]	DAILY MX	report only	all year
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	May
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Mar
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Aug
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Jun
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Jul
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Sep
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Apr
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Oct
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 3.9 mg/L	May
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 3.9 mg/L	Feb
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 3.9 mg/L	Mar
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 2.7 mg/L	Aug
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 2.7 mg/L	Jun
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 2.7 mg/L	Jul
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 3.9 mg/L	Sep
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 3.9 mg/L	Apr
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 3.9 mg/L	Dec
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 3.9 mg/L	Jan
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 3.9 mg/L	Oct
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 3.9 mg/L	Nov
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1001 lb/d	May
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1001 lb/d	Mar
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1001 lb/d	Aug
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1001 lb/d	Jun
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1001 lb/d	Jul
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1001 lb/d	Sep
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1001 lb/d	Apr
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1001 lb/d	Oct
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 2602 lb/d	May
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 2602 lb/d	Feb
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 2602 lb/d	Mar
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 1801 lb/d	Aug
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 1801 lb/d	Jun
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 1801 lb/d	Jul
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 2602 lb/d	Sep
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 2602 lb/d	Apr
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 2602 lb/d	Dec
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 2602 lb/d	Jan
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 2602 lb/d	Oct
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 2602 lb/d	Nov
001	Nitrogen, ammonia total [as N]	WKLY AVG	<= 3.8 mg/L	Mar, Apr, May, Sep, Oct
001	Nitrogen, ammonia total [as N]	WKLY AVG	<= 2535 lb/d	Mar, Apr, May, Sep, Oct
001	Phosphorus, total [as P]	DAILY MX	report only	all year
001	Cyanide, total [as CN]	DAILY MX	report only	all year
001	Cyanide, total [as CN]	DAILY MX	report only	all year
001	Cyanide, free [amenable to chlorination]	DAILY MX	report only	all year
001	Cyanide, free [amenable to chlorination]	DAILY MX	report only	all year
001	Fluoride, total [as F]	DAILY MX	report only	all year
001	Fluoride, total [as F]	DAILY MX	report only	all year
001	Arsenic, total [as As]	DAILY MX	report only	all year
001	Arsenic, total [as As]	DAILY MX	report only	all year
001	Barium, total [as Ba]	DAILY MX	report only	all year
001	Barium, total [as Ba]	DAILY MX	report only	all year
001	Beryllium, total [as Be]	DAILY MX	report only	all year
001	Beryllium, total [as Be]	DAILY MX	report only	all year
001	Cadmium, total [as Cd]	DAILY MX	report only	all year
001	Cadmium, total [as Cd]	DAILY MX	report only	all year
001	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
001	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
001	Chromium, total [as Cr]	DAILY MX	report only	all year
001	Chromium, total [as Cr]	DAILY MX	report only	all year
001	Copper, total [as Cu]	DAILY MX	report only	all year
001	Copper, total [as Cu]	DAILY MX	report only	all year
001	Iron, total [as Fe]	DAILY MX	report only	all year
001	Iron, total [as Fe]	DAILY MX	report only	all year
001	Iron, dissolved [as Fe]	DAILY MX	report only	all year
001	Iron, dissolved [as Fe]	DAILY MX	report only	all year
001	Lead, total [as Pb]	DAILY MX	report only	all year
001	Lead, total [as Pb]	DAILY MX	report only	all year
001	Manganese, total [as Mn]	DAILY MX	report only	all year
001	Manganese, total [as Mn]	DAILY MX	report only	all year
001	Thallium, total [as Tl]	DAILY MX	report only	all year
001	Thallium, total [as Tl]	DAILY MX	report only	all year
001	Nickel, total [as Ni]	DAILY MX	report only	all year
001	Nickel, total [as Ni]	DAILY MX	report only	all year
001	Silver, total [as Ag]	DAILY MX	report only	all year
001	Silver, total [as Ag]	DAILY MX	report only	all year
001	Zinc, total [as Zn]	DAILY MX	report only	all year
001	Zinc, total [as Zn]	DAILY MX	report only	all year
001	Antimony, total [as Sb]	DAILY MX	report only	all year
001	Antimony, total [as Sb]	DAILY MX	report only	all year
001	Selenium, total [as Se]	DAILY MX	report only	all year
001	Selenium, total [as Se]	DAILY MX	report only	all year
001	Phenolics, total recoverable	DAILY MX	report only	all year
001	Phenolics, total recoverable	DAILY MX	report only	all year
001	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
001	Chlorine, total residual	DAILY MX	<= .25 mg/L	Jan, Feb, Mar, Apr, Nov, Dec
001	Chlorine, total residual	DAILY MX	<= .25 mg/L	May, Jun, Jul, Aug, Sep, Oct
001	Mercury, total [as Hg]	DAILY MX	report only	all year
001	Mercury, total [as Hg]	DAILY MX	report only	all year
001	Coliform, fecal general	DAILY MX	<= 400 #/100mL	May, Jun, Jul, Aug, Sep, Oct
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 20 mg/L	all year
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	<= 40 mg/L	all year
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 13344 lb/d	all year
001	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	<= 26688 lb/d	all year
002	pH	MINIMUM	>= 6 SU	all year
002	pH	MAXIMUM	<= 9 SU	all year
002	Solids, total suspended	MO AVG	<= 25 mg/L	all year
002	Solids, total suspended	WKLY AVG	<= 45 mg/L	all year
002	Solids, total suspended	MO AVG	<= 16680 lb/d	all year
002	Solids, total suspended	WKLY AVG	<= 30024 lb/d	all year
002	Nitrogen, total [as N]	DAILY MX	report only	all year
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Mar
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Apr
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	May
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Jun
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Jul
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Aug
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Sep
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Oct
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 3.9 mg/L	Jan
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 3.9 mg/L	Feb
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 3.9 mg/L	Nov
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 3.9 mg/L	Dec
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 3.9 mg/L	Mar
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 3.9 mg/L	Apr
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 3.9 mg/L	May
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 2.7 mg/L	Jun
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 2.7 mg/L	Jul
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 2.7 mg/L	Aug
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 3.9 mg/L	Sep
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 3.9 mg/L	Oct
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1001 lb/d	Mar
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1001 lb/d	Apr
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1001 lb/d	May
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1001 lb/d	Jun
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1001 lb/d	Jul
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1001 lb/d	Aug
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1001 lb/d	Sep
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1001 lb/d	Oct
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 2602 lb/d	Jan
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 2602 lb/d	Feb
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 2602 lb/d	Nov
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 2602 lb/d	Dec
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 2602 lb/d	Mar
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 2602 lb/d	Apr
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 2602 lb/d	May
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 1801 lb/d	Jun
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 1801 lb/d	Jul
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 1801 lb/d	Aug
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 2602 lb/d	Sep
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 2602 lb/d	Oct
002	Nitrogen, ammonia total [as N]	WKLY AVG	<= 3.8 mg/L	Mar, Apr, May, Sep, Oct
002	Nitrogen, ammonia total [as N]	WKLY AVG	<= 2535 lb/d	Mar, Apr, May, Sep, Oct
002	Phosphorus, total [as P]	DAILY MX	report only	all year
002	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
002	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
002	Chlorine, total residual	DAILY MX	<= .25 mg/L	May, Jun, Jul, Aug, Sep, Oct
002	Chlorine, total residual	DAILY MX	<= .25 mg/L	Jan, Feb, Mar, Apr, Nov, Dec
002	Coliform, fecal general	DAILY MX	<= 400 #/100mL	May, Jun, Jul, Aug, Sep, Oct
002	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 20 mg/L	all year
002	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	<= 40 mg/L	all year
002	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 13344 lb/d	all year
002	BOD, carbonaceous [5 day, 20 C]	WKLY AVG	<= 26688 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
INFL	Oil & Grease	DAILY MX	report only	all year
INFL	Oil & Grease	DAILY MX	report only	all year
INFL	Cyanide, total [as CN]	DAILY MX	report only	all year
INFL	Cyanide, total [as CN]	DAILY MX	report only	all year
INFL	Cyanide, free [amenable to chlorination]	DAILY MX	report only	all year
INFL	Cyanide, free [amenable to chlorination]	DAILY MX	report only	all year
INFL	Fluoride, total [as F]	DAILY MX	report only	all year
INFL	Fluoride, total [as F]	DAILY MX	report only	all year
INFL	Arsenic, total [as As]	DAILY MX	report only	all year
INFL	Arsenic, total [as As]	DAILY MX	report only	all year
INFL	Barium, total [as Ba]	DAILY MX	report only	all year
INFL	Barium, total [as Ba]	DAILY MX	report only	all year
INFL	Beryllium, total [as Be]	DAILY MX	report only	all year
INFL	Beryllium, total [as Be]	DAILY MX	report only	all year
INFL	Cadmium, total [as Cd]	DAILY MX	report only	all year
INFL	Cadmium, total [as Cd]	DAILY MX	report only	all year
INFL	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
INFL	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
INFL	Chromium, total [as Cr]	DAILY MX	report only	all year
INFL	Chromium, total [as Cr]	DAILY MX	report only	all year
INFL	Copper, total [as Cu]	DAILY MX	report only	all year
INFL	Copper, total [as Cu]	DAILY MX	report only	all year
INFL	Iron, total [as Fe]	DAILY MX	report only	all year
INFL	Iron, total [as Fe]	DAILY MX	report only	all year
INFL	Iron, dissolved [as Fe]	DAILY MX	report only	all year
INFL	Iron, dissolved [as Fe]	DAILY MX	report only	all year
INFL	Lead, total [as Pb]	DAILY MX	report only	all year
INFL	Lead, total [as Pb]	DAILY MX	report only	all year
INFL	Manganese, total [as Mn]	DAILY MX	report only	all year
INFL	Manganese, total [as Mn]	DAILY MX	report only	all year
INFL	Thallium, total [as Tl]	DAILY MX	report only	all year
INFL	Thallium, total [as Tl]	DAILY MX	report only	all year
INFL	Nickel, total [as Ni]	DAILY MX	report only	all year
INFL	Nickel, total [as Ni]	DAILY MX	report only	all year
INFL	Silver, total [as Ag]	DAILY MX	report only	all year
INFL	Silver, total [as Ag]	DAILY MX	report only	all year
INFL	Zinc, total [as Zn]	DAILY MX	report only	all year
INFL	Zinc, total [as Zn]	DAILY MX	report only	all year
INFL	Antimony, total [as Sb]	DAILY MX	report only	all year
INFL	Antimony, total [as Sb]	DAILY MX	report only	all year
INFL	Selenium, total [as Se]	DAILY MX	report only	all year
INFL	Selenium, total [as Se]	DAILY MX	report only	all year
INFL	Phenolics, total recoverable	DAILY MX	report only	all year
INFL	Phenolics, total recoverable	DAILY MX	report only	all year
INFL	Mercury, total [as Hg]	DAILY MX	report only	all year
INFL	Mercury, total [as Hg]	DAILY MX	report only	all year