HAYDENVILLE WASTEWATER TREATMENT PLANT
NPDES ID: OH0107735
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: 1 effluent violation.
Violations
May 31, 2026
Solids, total suspended
9% over limit
Discharged 2.8 kg/d against a permitted limit of 2.56 kg/d (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, total suspended
17% over limit
Discharged 4.5 kg/d against a permitted limit of 3.84 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
76% over limit
Discharged 4.5 kg/d against a permitted limit of 2.56 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
55% over limit
Discharged 3.3 kg/d against a permitted limit of 2.13 kg/d (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
BOD, carbonaceous [5 day, 20 C]
13% over limit
Discharged 2.4 kg/d against a permitted limit of 2.13 kg/d (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
BOD, carbonaceous [5 day, 20 C]
28% over limit
Discharged 32 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
13% over limit
Discharged 34 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Solids, total suspended
12% over limit
Discharged 4.3 kg/d against a permitted limit of 3.84 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
40% over limit
Discharged 42 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
29% over limit
Discharged 3.3 kg/d against a permitted limit of 2.56 kg/d (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
BOD, carbonaceous [5 day, 20 C]
545% over limit
Discharged 22 kg/d against a permitted limit of 3.41 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
56% over limit
Discharged 39 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
9% over limit
Discharged 2.8 kg/d against a permitted limit of 2.56 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
416% over limit
Discharged 11 kg/d against a permitted limit of 2.13 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
33% over limit
Discharged 5.1 kg/d against a permitted limit of 3.84 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
70% over limit
Discharged 68 mg/L against a permitted limit of 40 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
April 30, 2025
BOD, carbonaceous [5 day, 20 C]
252% over limit
Discharged 12 kg/d against a permitted limit of 3.41 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
463% over limit
Discharged 12 kg/d against a permitted limit of 2.13 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
291% over limit
Discharged 10 kg/d against a permitted limit of 2.56 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
160% over limit
Discharged 10 kg/d against a permitted limit of 3.84 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
February 28, 2025
BOD, carbonaceous [5 day, 20 C]
152% over limit
Discharged 8.6 kg/d against a permitted limit of 3.41 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
304% over limit
Discharged 8.6 kg/d against a permitted limit of 2.13 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
150% over limit
Discharged 6.4 kg/d against a permitted limit of 2.56 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
67% over limit
Discharged 6.4 kg/d against a permitted limit of 3.84 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
January 31, 2025
Solids, total suspended
9% over limit
Discharged 2.8 kg/d against a permitted limit of 2.56 kg/d (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)