DEEP CREEK LAKE WWTP
NPDES ID: MD0054348
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.
Violations
February 28, 2026
Nitrogen, ammonia total [as N]
854% over limit
Discharged 26.7 mg/L against a permitted limit of 2.8 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
161% over limit
Discharged 41.40479965 kg/d against a permitted limit of 15.88999987 kg/d (MX MO AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
161% over limit
Discharged 90.11899924 kg/d against a permitted limit of 34.50399971 kg/d (MX DA AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
843% over limit
Discharged 57.5 mg/L against a permitted limit of 6.1 mg/L (MX DA AV)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
126% over limit
Discharged 13.8 mg/L against a permitted limit of 6.1 mg/L (MX DA AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
64% over limit
Discharged 4.6 mg/L against a permitted limit of 2.8 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
November 30, 2025
Copper, total recoverable
0% over limit
Discharged 0.01135 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Copper, total recoverable
0% over limit
Discharged 0.013 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
October 31, 2025
Copper, total recoverable
0% over limit
Discharged 0.014528 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Copper, total recoverable
0% over limit
Discharged 0.014 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
September 30, 2025
Copper, total recoverable
0% over limit
Discharged 0.011 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Copper, total recoverable
0% over limit
Discharged 0.010896 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
August 31, 2025
Copper, total recoverable
0% over limit
Discharged 0.00908 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Copper, total recoverable
0% over limit
Discharged 0.005 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
July 31, 2025
Copper, total recoverable
0% over limit
Discharged 0.00681 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Copper, total recoverable
0% over limit
Discharged 0.004 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
June 30, 2025
Copper, total recoverable
0% over limit
Discharged 0.003 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Copper, total recoverable
0% over limit
Discharged 0.005448 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
January 31, 2025
Nitrogen, ammonia total [as N]
36% over limit
Discharged 8.3 mg/L against a permitted limit of 6.1 mg/L (MX DA AV)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (5 days ago)