HYLEN SOUDERS ELEM SCH
NPDES ID: OH0136255
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
Violations
January 31, 2026
Nitrogen, ammonia total [as N]
20% over limit
Discharged 3.6 mg/L against a permitted limit of 3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
BOD, carbonaceous [5 day, 20 C]
18% over limit
Discharged 0.53 kg/d against a permitted limit of 0.45 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
173% over limit
Discharged 41 mg/L against a permitted limit of 15 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
310% over limit
Discharged 41 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0 kg/d against a permitted limit of 0.45 kg/d (MO AVG)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0 kg/d against a permitted limit of 0.68 kg/d (WKLY MAX)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0 mg/L against a permitted limit of 15 mg/L (WKLY MAX)
DMR, Limited - Overdue
February 28, 2025
pH
0% over limit
Discharged 9.32 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
10% over limit
Discharged 5.4 mg/L against a permitted limit of 6 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
January 31, 2025
pH
0% over limit
Discharged 9.14 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
7% over limit
Discharged 5.6 mg/L against a permitted limit of 6 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
December 31, 2024
pH
0% over limit
Discharged 9.26 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
Oxygen, dissolved [DO]
8% over limit
Discharged 5.5 mg/L against a permitted limit of 6 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
September 30, 2024
Solids, total suspended
33% over limit
Discharged 16 mg/L against a permitted limit of 12 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli, MTEC-MF
6% over limit
Discharged 134 MPN/100mL against a permitted limit of 126 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
August 31, 2024
E. coli, MTEC-MF
60% over limit
Discharged 201 MPN/100mL against a permitted limit of 126 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (4 days ago)