MONTICELLO STP, CITY OF, Monticello, IL: NPDES IL0029980 discharge permit, effluent exceedances, inspections, penalties

MONTICELLO STP, CITY OF, Monticello, Illinois: Individual permit IL0029980, held by MONTICELLO, CITY OF; Publicly owned treatment works; Administratively continued; issued September 14, 2011, term to September 30, 2016; discharges to UNNAMED TRIB OF SANGAMON RIVER.

2 of the 36 pollutants listed for NPDES IL0029980 have no violation or effluent exceedance.

• Nitrogen, ammonia total [as N]: 112 limits, 30 violations of any kind, 12 effluent exceedances, latest September 30, 2024, largest 4,596% over the limit.
• Solids, total suspended: 11 limits, 24 violations of any kind, 8 effluent exceedances, latest January 31, 2023, largest 360% over the limit.
• Copper, total [as Cu]: 4 limits, 12 violations of any kind, 8 effluent exceedances, latest March 31, 2012, largest 357% over the limit.
• BOD, carbonaceous [5 day, 20 C]: 8 limits, 24 violations of any kind, 4 effluent exceedances, latest September 30, 2001, largest 774% over the limit.
• BOD, 5-day, 20 deg. C: 3 limits, 3 violations of any kind, 3 effluent exceedances, latest April 30, 2016, largest 45% over the limit.
• Phosphorus, total [as P]: 4 limits, 9 violations of any kind, 1 effluent exceedance, latest July 31, 2022, largest 22% over the limit.
• Oxygen, dissolved [DO]: 10 limits, 12 violations of any kind.
• Flow, in conduit or thru treatment plant: 6 limits, 12 violations of any kind.
• pH: 8 limits, 8 violations of any kind.
• Nitrogen, total [as N]: 4 limits, 8 violations of any kind.
• Mercury, total [as Hg]: 2 limits, 6 violations of any kind.
• Chlorine, total residual: 6 limits, 4 violations of any kind.
• Coliform, fecal general: 6 limits, 4 violations of any kind.
• Coliform, fecal - % samples exceeding limit: 2 limits, 4 violations of any kind.
• Oil & Grease: 0 limits, 4 violations of any kind.
• Nitrite + Nitrate total [as N]: 0 limits, 4 violations of any kind.
• Cyanide, total [as CN]: 0 limits, 4 violations of any kind.
• Fluoride, total [as F]: 0 limits, 4 violations of any kind.
• Arsenic, total [as As]: 0 limits, 4 violations of any kind.
• Barium, total [as Ba]: 0 limits, 4 violations of any kind.
• Cadmium, total [as Cd]: 0 limits, 4 violations of any kind.
• Chromium, hexavalent [as Cr]: 0 limits, 4 violations of any kind.
• Chromium, total [as Cr]: 0 limits, 4 violations of any kind.
• Iron, total [as Fe]: 0 limits, 4 violations of any kind.
• Iron, dissolved [as Fe]: 0 limits, 4 violations of any kind.
• Lead, total [as Pb]: 0 limits, 4 violations of any kind.
• Manganese, total [as Mn]: 0 limits, 4 violations of any kind.
• Nickel, total [as Ni]: 0 limits, 4 violations of any kind.
• Silver, total [as Ag]: 0 limits, 4 violations of any kind.
• Zinc, total [as Zn]: 0 limits, 4 violations of any kind.
• Selenium, total [as Se]: 0 limits, 4 violations of any kind.
• Phenolics, total recoverable: 0 limits, 4 violations of any kind.
• Cyanide, free [amenable to chlorination]: 0 limits, 3 violations of any kind.
• Cyanide, weak acid, dissociable: 0 limits, 1 violation of any kind.
• Nitrogen, nitrate total [as N]: 4 limits.
• Flow, total: 2 limits.

• January 21, 2026: Evaluation (S).
• January 21, 2026: Evaluation (S).
• December 5, 2025: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (ST6).
• May 6, 2025: 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; 56 were issued before IL0029980. MONTICELLO, CITY OF holds 2 permits in Illinois.

Other permits held by MONTICELLO, CITY OF

• CITY OF MONTICELLO STP, Monticello: ILL029980, issued 2021-01-01

Coverages issued nearest IL0029980

• 2011-08-05: LOCKPORT STP, CITY OF, Lockport: IL0029611, held by LOCKPORT, CITY OF
• 2011-08-17: MATTOON STP, CITY OF, Mattoon: IL0029831, held by MATTOON, CITY OF
• 2011-08-18: CARMI STP, CITY OF, Carmi: IL0027910, held by CARMI, CITY OF
• 2011-09-13: HERRIN STP, CITY OF, Herrin: IL0029165, held by HERRIN, CITY OF
• 2011-09-13: WEST FRANKFORT STP, CITY OF, West Frankfort: IL0031704, held by WEST FRANKFORT, CITY OF
• 2011-09-28: NEW LENOX STP #1, VILLAGE OF, New Lenox: IL0020559, held by NEW LENOX, VILLAGE OF
• 2011-09-29: CHESTER STP, Chester: IL0072931, held by CITY OF CHESTER
• 2011-09-30: LITCHFIELD STP, Litchfield: IL0020621, held by LITCHFIELD, CITY OF
• 2011-09-30: STREATOR STP, CITY OF, Streator: IL0022004, held by STREATOR. CITY OF
• 2011-10-28: URBANA-CHAMPAIGN SD - SOUTHWEST STP, Champaign: IL0031526, held by URBANA-CHAMPAIGN SANITARY DISTRICT

MONTICELLO STP, CITY OF among its neighbors

9 discharge permits are in the Wildcat Creek-Sangamon River subwatershed (HUC 071300060404); IL0029980 is one. Its county: 18, 1 major; IL0029980 is major permit.

Other permits in the Wildcat Creek-Sangamon River subwatershed (HUC 071300060404)

• ALLERTON PARK & 4H MEMORIAL CAMP STP, Monticello: IL0053325, minor, term to 2025-08-31
• CHIMNEY LAKEOWNERS ASSOCIATION, Monticello: ILG870754, minor, term to 2021-10-31
• CITY OF MONTICELLO STP, Monticello: ILL029980, minor, term to 2025-12-31
• DEWITT / PIATT COUNTY HEALTH DEPARTMENT, Monticello: ILG870181, minor, term to 2021-10-31
• OBERHEIM PARK, Monticello: ILR10ZFPD, minor, term to 2028-08-31
• PIATT COUNTY CONCRETE, Monticello: ILR005255, minor, term to 2008-06-01
• RICHARD B ROBROCK II, Cerro Gordo: ILG870650, minor, term to 2021-10-31
• VIOBIN PRODUCTS LLC, Monticello: IL0005142, minor, term to 2023-05-31