SELHORST EQUIPMENT SERVICES
NPDES ID: OH0151609
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, 2 single-event violations.
Violations
June 30, 2026
Nitrogen, ammonia total [as N]
206% over limit
Discharged 0.0104 kg/d against a permitted limit of 0.0034 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
3973% over limit
Discharged 61.1 mg/L against a permitted limit of 1.5 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
43% over limit
Discharged 3.4 mg/L against a permitted limit of 6 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
6010% over limit
Discharged 61.1 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
7% over limit
Discharged 10.7 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
352% over limit
Discharged 0.0104 kg/d against a permitted limit of 0.0023 kg/d (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (5 days ago)