MILFORD CITY WWTP
NPDES ID: OH0020451
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: 8 effluent violations.
Violations
June 30, 2026
Oxygen, dissolved [DO]
7% over limit
Discharged 5.56 mg/L against a permitted limit of 6 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
34% over limit
Discharged 18.8 mg/L against a permitted limit of 14 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
52% over limit
Discharged 14.3 mg/L against a permitted limit of 9.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2026
Nitrogen, ammonia total [as N]
40% over limit
Discharged 19.6 mg/L against a permitted limit of 14 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
53% over limit
Discharged 14.4 mg/L against a permitted limit of 9.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
110% over limit
Discharged 19.7 mg/L against a permitted limit of 9.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
14% over limit
Discharged 48.5 kg/d against a permitted limit of 42.6 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
82% over limit
Discharged 25.5 mg/L against a permitted limit of 14 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
1% over limit
Discharged 9.46 mg/L against a permitted limit of 9.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
18% over limit
Discharged 33.2 mg/L against a permitted limit of 28.1 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
February 28, 2026
Solids, total suspended
256% over limit
Discharged 100 mg/L against a permitted limit of 28.1 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
152% over limit
Discharged 323 kg/d against a permitted limit of 128 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
31% over limit
Discharged 111 kg/d against a permitted limit of 85 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
91% over limit
Discharged 36 mg/L against a permitted limit of 18.8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Solids, total suspended
36% over limit
Discharged 38.3 mg/L against a permitted limit of 28.1 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
June 30, 2025
Solids, total suspended
89% over limit
Discharged 53 mg/L against a permitted limit of 28.1 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
17% over limit
Discharged 150 kg/d against a permitted limit of 128 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
February 28, 2025
Solids, total suspended
30% over limit
Discharged 36.5 mg/L against a permitted limit of 28.1 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
October 31, 2024
Solids, total suspended
42% over limit
Discharged 39.8 mg/L against a permitted limit of 28.1 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
August 31, 2024
Nitrogen, ammonia total [as N]
23% over limit
Discharged 17.2 mg/L against a permitted limit of 14 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 17, 2026 (4 hours ago)