MCGUFFEY STP
NPDES ID: OH0026271
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: 6 effluent violations, 5 single-event violations.
Violations
June 30, 2026
Chlorine, total residual
321% over limit
Discharged 0.16 mg/L against a permitted limit of 0.038 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.97 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2026
E. coli, MTEC-MF
269% over limit
Discharged 1047 MPN/100mL against a permitted limit of 284 MPN/100mL (WK GEOMN)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.12 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2026
Oxygen, dissolved [DO]
69% over limit
Discharged 1.55 mg/L against a permitted limit of 5 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.07 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (4 days ago)