NPDES ID: MD3835H16
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: 7 effluent violations.
Violations
April 30, 2026
Solids, total suspended
113% over limit
Discharged 64 mg/L against a permitted limit of 30 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
57% over limit
Discharged 47 mg/L against a permitted limit of 30 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
58% over limit
Discharged 12.6 mg/L against a permitted limit of 8 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, total suspended
57% over limit
Discharged 47 mg/L against a permitted limit of 30 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, total [as N]
74% over limit
Discharged 13.9 mg/L against a permitted limit of 8 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
Solids, total suspended
83% over limit
Discharged 55 mg/L against a permitted limit of 30 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, total [as N]
36% over limit
Discharged 10.9 mg/L against a permitted limit of 8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Nitrogen, total [as N]
11% over limit
Discharged 8.9 mg/L against a permitted limit of 8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Nitrogen, total [as N]
4% over limit
Discharged 8.3 mg/L against a permitted limit of 8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Phosphate, total [as PO4]
0% over limit
Discharged 0.09 mg/L against a permitted limit of 0 mg/L (ANNL AVG)
DMR, Monitor Only - Overdue
Chloride [as Cl]
0% over limit
Discharged 14.4 mg/L against a permitted limit of 250 mg/L (ANNL AVG)
DMR, Limited - Overdue
Solids, total dissolved
0% over limit
Discharged 67 mg/L against a permitted limit of 500 mg/L (ANNL MAX)
DMR, Limited - Overdue
Phosphate, total [as PO4]
0% over limit
Discharged 0.03 mg/L against a permitted limit of 0 mg/L (ANNL AVG)
DMR, Monitor Only - Overdue
Phosphate, total [as PO4]
0% over limit
Discharged 0.15 mg/L against a permitted limit of 0 mg/L (ANNL AVG)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 5.5 SU against a permitted limit of 0 SU (ANNL AVG)
DMR, Monitor Only - Overdue
Chloride [as Cl]
0% over limit
Discharged 12.7 mg/L against a permitted limit of 250 mg/L (ANNL AVG)
DMR, Limited - Overdue
August 31, 2024
Nitrogen, total [as N]
19% over limit
Discharged 9.5 mg/L against a permitted limit of 8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
107% over limit
Discharged 62 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (4 days ago)