AUBURN CORNERS WWTP
NPDES ID: OH0123684
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
This quarter: 2 effluent violations.
Violations
June 30, 2026
Mercury, total low level
43% over limit
Discharged 0.000001 kg/d against a permitted limit of 7e-7 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total low level
292% over limit
Discharged 0.0000051 mg/L against a permitted limit of 0.0000013 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Mercury, total low level
108% over limit
Discharged 0.00000271 mg/L against a permitted limit of 0.0000013 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Cyanide, free available
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Cyanide, free available
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
November 30, 2025
Phosphorus, total [as P]
10% over limit
Discharged 0.99 mg/L against a permitted limit of 0.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Phosphorus, total [as P]
4% over limit
Discharged 1.14 mg/L against a permitted limit of 1.1 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
8% over limit
Discharged 0.97 mg/L against a permitted limit of 0.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Phosphorus, total [as P]
16% over limit
Discharged 1.04 mg/L against a permitted limit of 0.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
41% over limit
Discharged 0.874 kg/d against a permitted limit of 0.62 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
34% over limit
Discharged 1.47 mg/L against a permitted limit of 1.1 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
June 30, 2025
Cyanide, free available
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Cyanide, free available
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
May 31, 2025
Nitrogen, ammonia total [as N]
34% over limit
Discharged 1.47 kg/d against a permitted limit of 1.1 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
35% over limit
Discharged 2.57 mg/L against a permitted limit of 1.9 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
February 28, 2025
Phosphorus, total [as P]
4% over limit
Discharged 0.94 mg/L against a permitted limit of 0.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Cyanide, free available
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Cyanide, free available
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
October 31, 2024
Phosphorus, total [as P]
68% over limit
Discharged 1.85 mg/L against a permitted limit of 1.1 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
106% over limit
Discharged 1.85 mg/L against a permitted limit of 0.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Phosphorus, total [as P]
91% over limit
Discharged 2.1 mg/L against a permitted limit of 1.1 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
133% over limit
Discharged 2.1 mg/L against a permitted limit of 0.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2024
E. coli, MTEC-MF
752% over limit
Discharged 2420 MPN/100mL against a permitted limit of 284 MPN/100mL (WK GEOMN)
DMR, Limited - Numeric Violation
E. coli, MTEC-MF
21% over limit
Discharged 152 MPN/100mL against a permitted limit of 126 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 15, 2026 (11 hours ago)