DC METRO AVIATION SERVICES
NPDES ID: MDR003375
D — SNC: Discharge monitoring report not received
The facility didn't submit its required discharge monitoring report.
This quarter: 20 reporting violations.
Violations
March 31, 2026
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
December 31, 2025
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
September 30, 2025
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
June 30, 2025
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
March 31, 2025
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
December 31, 2024
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (QRTR MIN)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (QRTR AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (QRTR MAX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.14 mg/L (QRTR AVG)
DMR, Limited - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (22 days ago)