LAKE IN THE HILLS SD STP, Lake In The Hills, IL: NPDES IL0021733 discharge permit, effluent exceedances, inspections, penalties

LAKE IN THE HILLS SD STP, Lake In The Hills, Illinois: Individual permit IL0021733, held by LAKE IN THE HILLS SANITARY DISTRICT; Publicly owned treatment works; Administratively continued; issued December 28, 2016, term to December 31, 2021; discharges to CRYSTAL LAKE OUTLET.

23 of the 37 pollutants listed for NPDES IL0021733 have no violation or effluent exceedance.

• Barium, total [as Ba]: 11 limits, 8 violations of any kind, 8 effluent exceedances, latest October 31, 2021, largest 56% over the limit.
• Nitrogen, ammonia total [as N]: 14 limits, 11 violations of any kind, 7 effluent exceedances, latest October 31, 2025, largest 357% over the limit.
• Phosphorus, total [as P]: 2 limits, 36 violations of any kind, 6 effluent exceedances, latest September 30, 2016, largest 51% over the limit.
• Coliform, fecal general: 1 limit, 5 violations of any kind, 4 effluent exceedances, latest October 31, 2023, largest 225% over the limit.
• Copper, dry weight: 0 limits, 3 violations of any kind, 3 effluent exceedances, latest September 30, 2009, largest 14% over the limit.
• Copper, total [as Cu]: 2 limits, 3 violations of any kind, 2 effluent exceedances, latest February 28, 2007, largest 108% over the limit.
• Nitrogen, total [as N]: 1 limit, 29 violations of any kind.
• Flow, in conduit or thru treatment plant: 4 limits, 13 violations of any kind.
• BOD, carbonaceous [5 day, 20 C]: 4 limits, 12 violations of any kind.
• Oxygen, dissolved [DO]: 5 limits, 9 violations of any kind.
• Solids, total suspended: 5 limits, 9 violations of any kind.
• BOD, 5-day, 20 deg. C: 1 limit, 5 violations of any kind.
• pH: 2 limits, 2 violations of any kind.
• Chlorine, total residual: 1 limit, 1 violation of any kind.
• Oil & Grease: 2 limits.
• Cyanide, total [as CN]: 2 limits.
• Cyanide, free [amenable to chlorination]: 2 limits.
• Fluoride, total [as F]: 2 limits.
• Arsenic, total [as As]: 2 limits.
• Cadmium, total [as Cd]: 2 limits.
• Chromium, hexavalent [as Cr]: 2 limits.
• Chromium, total [as Cr]: 2 limits.
• Iron, total [as Fe]: 2 limits.
• Iron, dissolved [as Fe]: 2 limits.
• Lead, total [as Pb]: 2 limits.
• Manganese, total [as Mn]: 2 limits.
• Nickel, total [as Ni]: 2 limits.
• Silver, total [as Ag]: 2 limits.
• Zinc, total [as Zn]: 2 limits.
• Selenium, total [as Se]: 2 limits.
• Phenolics, total recoverable: 2 limits.
• Mercury, total [as Hg]: 2 limits.
• Temperature, water deg. fahrenheit: 1 limit.
• Alkalinity, total [as CaCO3]: 1 limit.
• Nitrite + Nitrate total [as N]: 1 limit.
• Phosphorus, dissolved: 1 limit.
• Nitrogen, Kjeldahl Total: 1 limit.

• August 11, 2025: Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment (ST6).
• December 1, 2024: Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment (ST6).

Illinois holds 544 Publicly owned treatment works coverages of this permit type in EPA’s file; 211 were issued before IL0021733.

Coverages issued nearest IL0021733

• 2016-11-04: BENTON NORTHWEST STP, CITY OF, Benton: IL0022365, held by BENTON, CITY OF
• 2016-11-16: MALDEN STP, VILLAGE OF, Malden: IL0024791, held by MALDEN, VILLAGE OF
• 2016-11-18: RICHMOND STP, VILLAGE OF, Richmond: IL0026093, held by RICHMOND, VILLAGE OF
• 2016-11-18: ASHLAND STP, VILLAGE OF, Ashland: IL0027529, held by ASHLAND, VILLAGE OF
• 2016-11-18: ILLINOIS AMERICAN WATER - TOLONO STP, Tolono: IL0031453, held by TOLONO, VILLAGE OF
• 2016-12-28: WOOD DALE SOUTH STP, Wood Dale: IL0034274, held by WOOD DALE, CITY OF
• 2016-12-29: ALBANY WWTP, Albany: IL0023302, held by ALBANY, VILLAGE OF
• 2016-12-29: OAK HIGHLANDS-INGALLS PARK SD STP, Joliet: IL0024422, held by OAK HIGHLANDS-INGALLS PARK SD
• 2016-12-29: PECATONICA WWTP, VILLAGE OF, Pecatonica: IL0030571, held by PECATONICA, VILLAGE OF
• 2017-01-18: RIVERTON STP, Riverton: IL0021041, held by RIVERTON, VILLAGE OF

LAKE IN THE HILLS SD STP among its neighbors

45 discharge permits are in the Crystal Lake Outlet subwatershed (HUC 071200061201); IL0021733 is one. Its county: 127, 16 major; IL0021733 is major permit.

Other permits in the Crystal Lake Outlet subwatershed (HUC 071200061201)

• 601 LIBERTY ROAD, Crystal Lake: ILR10ZG2D, minor, term to 2028-08-31
• ARROW ROAD CONSTRUCT-ALGONQUIN, Algonquin: ILR003835, minor, term to 2008-06-01
• BARD ESTATES, Crystal Lake: ILR10ZESN, minor, term to 2028-08-31
• BELLE TIRE ALGONQUIN, Algonquin: ILR10ZCEC, minor, term to 2028-08-31
• BRADY TRUCKING, INC.?JOHN, Alguonquin: ILR004449, minor, term to 2008-06-01
• CONSTRUCT FOGLIA CENTER FOR ADVANCED TECHNOLOGY AND INNOVATION (CATI) BUILDING, Crystal Lake: ILR10ZDG5, minor, term to 2028-08-31
• COOPER'S HAWK AT THE ENCLAVE, Algonquin: ILR10ZCJ2, minor, term to 2028-08-31
• CRYSTAL CREEK AND HARRISON STREET IMPROVEMENTS, Algonquin: ILR10ZBNM, minor, term to 2028-08-31
• CRYSTAL CREEK DAYLIGHTING PROJECT, Crystal Lake: ILR10ZDRK, minor, term to 2028-08-31
• CRYSTAL CREEK REACH 7, Lake In The Hills: ILR10ZFV1, minor, term to 2028-08-31