LINCOLN TRAIL STATE PARK STP
NPDES ID: IL0053945
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 4 compliance schedule violations.
Violations
October 31, 2025
Nitrogen, ammonia total [as N]
273% over limit
Discharged 11.2 mg/L against a permitted limit of 3 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
647% over limit
Discharged 11.2 mg/L against a permitted limit of 1.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
25% over limit
Discharged 4.1 mg/L against a permitted limit of 5.5 mg/L (MO AV MN)
DMR, Limited - Numeric Violation
October 31, 2024
Nitrogen, ammonia total [as N]
223% over limit
Discharged 9.7 mg/L against a permitted limit of 3 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
304% over limit
Discharged 97 mg/L against a permitted limit of 24 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
547% over limit
Discharged 9.7 mg/L against a permitted limit of 1.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
708% over limit
Discharged 97 mg/L against a permitted limit of 12 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Solids, total suspended
4042% over limit
Discharged 497 mg/L against a permitted limit of 12 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
110% over limit
Discharged 21 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
8% over limit
Discharged 3.72279997 kg/d against a permitted limit of 3.4504 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
33% over limit
Discharged 3.7 mg/L against a permitted limit of 5.5 mg/L (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
8% over limit
Discharged 1.86139998 kg/d against a permitted limit of 1.7252 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
8% over limit
Discharged 3.7 mg/L against a permitted limit of 4 mg/L (MN WK AV)
DMR, Limited - Numeric Violation
Solids, total suspended
1971% over limit
Discharged 497 mg/L against a permitted limit of 24 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
5% over limit
Discharged 21 mg/L against a permitted limit of 20 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2024
Solids, total suspended
6042% over limit
Discharged 737 mg/L against a permitted limit of 12 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
61% over limit
Discharged 2.76939998 kg/d against a permitted limit of 1.7252 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
62% over limit
Discharged 5.58419995 kg/d against a permitted limit of 3.4504 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
3280% over limit
Discharged 1.69 mg/L against a permitted limit of 0.05 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
2971% over limit
Discharged 737 mg/L against a permitted limit of 24 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2024
Solids, total suspended
83% over limit
Discharged 22 mg/L against a permitted limit of 12 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
420% over limit
Discharged 0.26 mg/L against a permitted limit of 0.05 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)