HANCOCK WWTP
NPDES ID: MD0024562
X — SNC: Effluent violation (non-monthly average limit)
The facility discharged more of a pollutant than its permit allows, measured over a period other than a monthly average.
This quarter: 5 effluent violations.
Violations
June 30, 2026
Nitrogen, ammonia total [as N]
374% over limit
Discharged 10.91 mg/L against a permitted limit of 2.3 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
25% over limit
Discharged 12.53 mg/L against a permitted limit of 10 mg/L (MX DA AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
156% over limit
Discharged 8.47617993 kg/d against a permitted limit of 3.31419997 kg/d (MX MO AV)
DMR, Limited - Numeric Violation
May 31, 2026
Nitrogen, ammonia total [as N]
110% over limit
Discharged 9.51129992 kg/d against a permitted limit of 4.53999996 kg/d (MX MO AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
268% over limit
Discharged 11.42 mg/L against a permitted limit of 3.1 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
December 31, 2025
Chlorine, total residual
150% over limit
Discharged 0.5 mg/L against a permitted limit of 0.2 mg/L (MAXIMUM)
DMR, Limited - Numeric Violation
October 31, 2025
Nitrogen, ammonia total [as N]
93% over limit
Discharged 8.76219993 kg/d against a permitted limit of 4.53999996 kg/d (MX MO AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
289% over limit
Discharged 12.05 mg/L against a permitted limit of 3.1 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
176% over limit
Discharged 8.57 mg/L against a permitted limit of 3.1 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
July 31, 2025
Nitrogen, ammonia total [as N]
172% over limit
Discharged 8.43 mg/L against a permitted limit of 3.1 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
29% over limit
Discharged 5.87021995 kg/d against a permitted limit of 4.53999996 kg/d (MX MO AV)
DMR, Limited - Numeric Violation
June 30, 2025
Nitrogen, ammonia total [as N]
226% over limit
Discharged 10.12 mg/L against a permitted limit of 3.1 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
236% over limit
Discharged 15.24985987 kg/d against a permitted limit of 4.53999996 kg/d (MX MO AV)
DMR, Limited - Numeric Violation
May 31, 2025
Nitrogen, ammonia total [as N]
381% over limit
Discharged 14.9 mg/L against a permitted limit of 3.1 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
388% over limit
Discharged 22.14157981 kg/d against a permitted limit of 4.53999996 kg/d (MX MO AV)
DMR, Limited - Numeric Violation
October 31, 2024
Nitrogen, ammonia total [as N]
456% over limit
Discharged 17.25 mg/L against a permitted limit of 3.1 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
233% over limit
Discharged 15.10457987 kg/d against a permitted limit of 4.53999996 kg/d (MX MO AV)
DMR, Limited - Numeric Violation
September 30, 2024
Nitrogen, ammonia total [as N]
336% over limit
Discharged 13.52 mg/L against a permitted limit of 3.1 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
122% over limit
Discharged 10.05609992 kg/d against a permitted limit of 4.53999996 kg/d (MX MO AV)
DMR, Limited - Numeric Violation
August 31, 2024
Nitrogen, ammonia total [as N]
182% over limit
Discharged 8.75 mg/L against a permitted limit of 3.1 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
21% over limit
Discharged 5.51155995 kg/d against a permitted limit of 4.53999996 kg/d (MX MO AV)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 15, 2026 (3 hours ago)