FOX LAKE, VILLAGE OF — NPDES permit IL0020958: limits, due date and EPA's record

NPDES permit IL0020958 · Major POTW · administratively continued, expires 2026-03-31 · EPA's file as of 2026-09-19

This permit expired on 2026-03-31 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

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 (240)

Outfall	Parameter	Statistic	Limit	Months
001	Temperature, water deg. fahrenheit	MO MAX	report only	all year
001	Oxygen, dissolved [DO]	MO AV MN	>= 5.5 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec
001	Oxygen, dissolved [DO]	MN WK AV	>= 4 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec
001	Oxygen, dissolved [DO]	MN WK AV	>= 6 mg/L	Mar, Apr, May, Jun, Jul
001	Oxygen, dissolved [DO]	DAILY MN	>= 3.5 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec
001	Oxygen, dissolved [DO]	DAILY MN	>= 5 mg/L	Mar, Apr, May, Jun, Jul
001	pH	MINIMUM	>= 6 SU	all year
001	pH	MAXIMUM	<= 9 SU	all year
001	Alkalinity, total [as CaCO3]	DAILY MX	report only	all year
001	Solids, total suspended	MO AVG	<= 12 mg/L	all year
001	Solids, total suspended	DAILY MX	<= 24 mg/L	all year
001	Solids, total suspended	MO AVG	<= 3002 lb/d	all year
001	Solids, total suspended	DAILY MX	<= 6005 lb/d	all year
001	Solids, total suspended	ANNL AVG	<= 2252 lb/d	Nov
001	Oil & Grease	DAILY MX	report only	all year
001	Oil & Grease	DAILY MX	report only	all year
001	Nitrogen, total [as N]	MO AVG	report only	all year
001	Nitrogen, total [as N]	DAILY MX	report only	all year
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1 mg/L	Jun, Jul, Aug
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Mar
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1 mg/L	Apr, May, Sep, Oct
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 2.5 mg/L	Jun, Jul, Aug
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 2.7 mg/L	Jan, Feb, Nov, Dec
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 2.2 mg/L	Mar
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 2.2 mg/L	Apr, May, Sep, Oct
001	Nitrogen, ammonia total [as N]	MO AVG	<= 188 lb/d	Jun, Jul, Aug
001	Nitrogen, ammonia total [as N]	MO AVG	<= 281 lb/d	Mar
001	Nitrogen, ammonia total [as N]	MO AVG	<= 188 lb/d	Apr, May, Sep, Oct
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 469 lb/d	Jun, Jul, Aug
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 676 lb/d	Jan, Feb, Nov, Dec
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 550 lb/d	Mar
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 413 lb/d	Apr, May, Sep, Oct
001	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
001	Nitrite + Nitrate total [as N]	DAILY MX	report only	all year
001	Phosphorus, total [as P]	MO AVG	<= 1 mg/L	all year
001	Phosphorus, total [as P]	MO AVG	<= 250 lb/d	all year
001	Phosphorus, dissolved	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	Chloride [as Cl]	MO AVG	<= 500 mg/L	all year
001	Chloride [as Cl]	MO AVG	<= 125100 lb/d	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	<= 1.25 mg/L	all year
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	all year
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 10 mg/L	all year
001	BOD, carbonaceous [5 day, 20 C]	DAILY MX	<= 20 mg/L	all year
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 2502 lb/d	all year
001	BOD, carbonaceous [5 day, 20 C]	DAILY MX	<= 5004 lb/d	all year
001	BOD, carbonaceous [5 day, 20 C]	ANNL AVG	<= 1877 lb/d	Nov
002	Temperature, water deg. fahrenheit	MO MAX	report only	all year
002	Oxygen, dissolved [DO]	MO AV MN	>= 5.5 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec
002	Oxygen, dissolved [DO]	MN WK AV	>= 6 mg/L	Mar, Apr, May, Jun, Jul
002	Oxygen, dissolved [DO]	MN WK AV	>= 4 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec
002	Oxygen, dissolved [DO]	DAILY MN	>= 5 mg/L	Mar, Apr, May, Jun, Jul
002	Oxygen, dissolved [DO]	DAILY MN	>= 3.5 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec
002	pH	MINIMUM	>= 6 SU	all year
002	pH	MAXIMUM	<= 9 SU	all year
002	Alkalinity, total [as CaCO3]	DAILY MX	report only	all year
002	Solids, total suspended	MO AVG	<= 12 mg/L	all year
002	Solids, total suspended	DAILY MX	<= 24 mg/L	all year
002	Solids, total suspended	MO AVG	<= 801 lb/d	all year
002	Solids, total suspended	DAILY MX	<= 1601 lb/d	all year
002	Oil & Grease	DAILY MX	report only	all year
002	Oil & Grease	DAILY MX	report only	all year
002	Nitrogen, total [as N]	MO AVG	report only	all year
002	Nitrogen, total [as N]	DAILY MX	report only	all year
002	Nitrogen, ammonia total [as N]	MO AVG	<= .6 mg/L	Jun, Jul, Aug
002	Nitrogen, ammonia total [as N]	MO AVG	<= .8 mg/L	Mar
002	Nitrogen, ammonia total [as N]	MO AVG	<= .8 mg/L	Apr, May, Sep, Oct
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 2.7 mg/L	Jan, Feb, Nov, Dec
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 3.2 mg/L	Jun, Jul, Aug
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 2.2 mg/L	Mar
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 2.2 mg/L	Apr, May, Sep, Oct
002	Nitrogen, ammonia total [as N]	MO AVG	<= 40 lb/d	Jun, Jul, Aug
002	Nitrogen, ammonia total [as N]	MO AVG	<= 53 lb/d	Mar
002	Nitrogen, ammonia total [as N]	MO AVG	<= 53 lb/d	Apr, May, Sep, Oct
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 180 lb/d	Jan, Feb, Nov, Dec
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 214 lb/d	Jun, Jul, Aug
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 147 lb/d	Mar
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 147 lb/d	Apr, May, Sep, Oct
002	Nitrogen, ammonia total [as N]	WKLY AVG	<= 1.5 mg/L	Jun, Jul, Aug
002	Nitrogen, ammonia total [as N]	WKLY AVG	<= 2 mg/L	Mar
002	Nitrogen, ammonia total [as N]	WKLY AVG	<= 2 mg/L	Apr, May, Sep, Oct
002	Nitrogen, ammonia total [as N]	WKLY AVG	<= 100 lb/d	Jun, Jul, Aug
002	Nitrogen, ammonia total [as N]	WKLY AVG	<= 133 lb/d	Mar
002	Nitrogen, ammonia total [as N]	WKLY AVG	<= 133 lb/d	Apr, May, Sep, Oct
002	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
002	Nitrite + Nitrate total [as N]	DAILY MX	report only	all year
002	Phosphorus, total [as P]	MO AVG	<= 1 mg/L	all year
002	Phosphorus, total [as P]	DAILY MX	report only	all year
002	Phosphorus, total [as P]	MO AVG	<= 67 lb/d	all year
002	Phosphorus, total [as P]	DAILY MX	report only	all year
002	Phosphorus, dissolved	DAILY MX	report only	all year
002	Cyanide, total [as CN]	DAILY MX	report only	all year
002	Cyanide, total [as CN]	DAILY MX	report only	all year
002	Cyanide, free [amenable to chlorination]	DAILY MX	report only	all year
002	Cyanide, free [amenable to chlorination]	DAILY MX	report only	all year
002	Chloride [as Cl]	MO AVG	<= 500 mg/L	all year
002	Chloride [as Cl]	MO AVG	<= 33360 lb/d	all year
002	Fluoride, total [as F]	DAILY MX	report only	all year
002	Fluoride, total [as F]	DAILY MX	report only	all year
002	Arsenic, total [as As]	DAILY MX	report only	all year
002	Arsenic, total [as As]	DAILY MX	report only	all year
002	Barium, total [as Ba]	DAILY MX	report only	all year
002	Barium, total [as Ba]	DAILY MX	report only	all year
002	Beryllium, total [as Be]	DAILY MX	report only	all year
002	Beryllium, total [as Be]	DAILY MX	report only	all year
002	Cadmium, total [as Cd]	DAILY MX	report only	all year
002	Cadmium, total [as Cd]	DAILY MX	report only	all year
002	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
002	Chromium, hexavalent [as Cr]	DAILY MX	report only	all year
002	Chromium, total [as Cr]	DAILY MX	report only	all year
002	Chromium, total [as Cr]	DAILY MX	report only	all year
002	Copper, total [as Cu]	DAILY MX	report only	all year
002	Copper, total [as Cu]	DAILY MX	report only	all year
002	Iron, total [as Fe]	DAILY MX	report only	all year
002	Iron, total [as Fe]	DAILY MX	report only	all year
002	Iron, dissolved [as Fe]	DAILY MX	report only	all year
002	Iron, dissolved [as Fe]	DAILY MX	report only	all year
002	Lead, total [as Pb]	DAILY MX	report only	all year
002	Lead, total [as Pb]	DAILY MX	report only	all year
002	Manganese, total [as Mn]	DAILY MX	report only	all year
002	Manganese, total [as Mn]	DAILY MX	report only	all year
002	Thallium, total [as Tl]	DAILY MX	report only	all year
002	Thallium, total [as Tl]	DAILY MX	report only	all year
002	Nickel, total [as Ni]	DAILY MX	report only	all year
002	Nickel, total [as Ni]	DAILY MX	report only	all year
002	Silver, total [as Ag]	DAILY MX	report only	all year
002	Silver, total [as Ag]	DAILY MX	report only	all year
002	Zinc, total [as Zn]	DAILY MX	report only	all year
002	Zinc, total [as Zn]	DAILY MX	report only	all year
002	Antimony, total [as Sb]	DAILY MX	report only	all year
002	Antimony, total [as Sb]	DAILY MX	report only	all year
002	Selenium, total [as Se]	DAILY MX	report only	all year
002	Selenium, total [as Se]	DAILY MX	report only	all year
002	Phenolics, total recoverable	DAILY MX	report only	all year
002	Phenolics, total recoverable	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	<= 1.25 mg/L	all year
002	Mercury, total [as Hg]	DAILY MX	report only	all year
002	Mercury, total [as Hg]	DAILY MX	report only	all year
002	Coliform, fecal general	DAILY MX	<= 400 #/100mL	all year
002	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 10 mg/L	all year
002	BOD, carbonaceous [5 day, 20 C]	DAILY MX	<= 20 mg/L	all year
002	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 667 lb/d	all year
002	BOD, carbonaceous [5 day, 20 C]	DAILY MX	<= 1334 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