CALHOON MEBA ENGINEERING SCHOOL WWTP
NPDES ID: MD1448U05
D — SNC: Discharge monitoring report not received
The facility didn't submit its required discharge monitoring report.
Violations
December 31, 2025
Solids, total dissolved
0% over limit
Discharged 174.6 mg/L against a permitted limit of 500 mg/L (AN AV MX)
DMR, Limited - Overdue
Phosphate, total [as PO4]
0% over limit
Discharged 0.12 mg/L against a permitted limit of 0 mg/L (ANNL AVG)
DMR, Monitor Only - Overdue
Nitrogen, nitrite total [as NO2]
0% over limit
Discharged 0 mg/L against a permitted limit of 1 mg/L (AN AV MX)
DMR, Limited - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 6.67 mg/L against a permitted limit of 10 mg/L (AN AV MX)
DMR, Limited - Overdue
Nitrogen, nitrate total [as NO3]
0% over limit
Discharged 6.67 mg/L against a permitted limit of 10 mg/L (AN AV MX)
DMR, Limited - Overdue
Solids, total dissolved
0% over limit
Discharged 291.6 mg/L against a permitted limit of 500 mg/L (AN AV MX)
DMR, Limited - Overdue
Nitrogen, nitrite total [as NO2]
0% over limit
Discharged 0.36 mg/L against a permitted limit of 1 mg/L (AN AV MX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 6.75 SU against a permitted limit of 0 SU (ANNL AVG)
DMR, Monitor Only - Overdue
Chloride
0% over limit
Discharged 15 mg/L against a permitted limit of 250 mg/L (AN AV MX)
DMR, Limited - Overdue
Chloride
0% over limit
Discharged 16 mg/L against a permitted limit of 0 mg/L (ANNL AVG)
DMR, Monitor Only - Overdue
Chloride
0% over limit
Discharged 88.3 mg/L against a permitted limit of 250 mg/L (AN AV MX)
DMR, Limited - Overdue
Coliform, fecal general
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 2.2 MPN/100mL (MAXIMUM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 6.65 SU against a permitted limit of 0 SU (ANNL AVG)
DMR, Monitor Only - Overdue
Phosphate, total [as PO4]
0% over limit
Discharged 0.16 mg/L against a permitted limit of 0 mg/L (ANNL AVG)
DMR, Monitor Only - Overdue
Coliform, fecal general
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 2.2 MPN/100mL (MAXIMUM)
DMR, Limited - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 1.84 mg/L against a permitted limit of 10 mg/L (AN AV MX)
DMR, Limited - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 2.11 mg/L against a permitted limit of 10 mg/L (AN AV MX)
DMR, Limited - Overdue
Nitrogen, nitrate total [as NO3]
0% over limit
Discharged 0 mg/L against a permitted limit of 10 mg/L (AN AV MX)
DMR, Limited - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (ANNL AVG)
DMR, Monitor Only - Overdue
Nitrogen, nitrate total [as NO3]
0% over limit
Discharged 1.84 mg/L against a permitted limit of 10 mg/L (AN AV MX)
DMR, Limited - Overdue
Nitrogen, nitrite total [as NO2]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (ANNL AVG)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 5.78 SU against a permitted limit of 0 SU (ANNL AVG)
DMR, Monitor Only - Overdue
Nitrogen, nitrate total [as NO3]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (ANNL AVG)
DMR, Monitor Only - Overdue
Nitrogen, nitrite total [as NO2]
0% over limit
Discharged 0 mg/L against a permitted limit of 1 mg/L (AN AV MX)
DMR, Limited - Overdue
Coliform, fecal general
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 2.2 MPN/100mL (MAXIMUM)
DMR, Limited - Overdue
Coliform, fecal general
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 0 MPN/100mL (ANNL AVG)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 6.26 SU against a permitted limit of 0 SU (ANNL AVG)
DMR, Monitor Only - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (ANNL AVG)
DMR, Monitor Only - Overdue
Phosphate, total [as PO4]
0% over limit
Discharged 0.19 mg/L against a permitted limit of 0 mg/L (ANNL AVG)
DMR, Monitor Only - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 1.61 mg/L against a permitted limit of 0 mg/L (ANNL AVG)
DMR, Monitor Only - Overdue
Chloride
0% over limit
Discharged 102.3 mg/L against a permitted limit of 250 mg/L (AN AV MX)
DMR, Limited - Overdue
Solids, total dissolved
0% over limit
Discharged 399.4 mg/L against a permitted limit of 500 mg/L (AN AV MX)
DMR, Limited - Overdue
Phosphate, total [as PO4]
0% over limit
Discharged 0.14 mg/L against a permitted limit of 0 mg/L (ANNL AVG)
DMR, Monitor Only - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 1.61 mg/L against a permitted limit of 0 mg/L (ANNL AVG)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 268.3 mg/L against a permitted limit of 0 mg/L (ANNL AVG)
DMR, Monitor Only - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0.36 mg/L against a permitted limit of 0 mg/L (ANNL AVG)
DMR, Monitor Only - Overdue
December 31, 2024
Coliform, fecal general
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 0 MPN/100mL (MX VALUE)
DMR, Limited - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 1.15 mg/L against a permitted limit of 10 mg/L (MX VALUE)
DMR, Limited - Overdue
Chloride
0% over limit
Discharged 102.75 mg/L against a permitted limit of 250 mg/L (MX VALUE)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.1 SU against a permitted limit of 0 SU (VALUE)
DMR, Monitor Only - Overdue
Coliform, fecal general
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 0 MPN/100mL (MX VALUE)
DMR, Limited - Overdue
Phosphate, total [as PO4]
0% over limit
Discharged 0.13 mg/L against a permitted limit of 0 mg/L (VALUE)
DMR, Monitor Only - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0.15 mg/L against a permitted limit of 0 mg/L (VALUE)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 81.3 mg/L against a permitted limit of 0 mg/L (VALUE)
DMR, Monitor Only - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 0.8 mg/L against a permitted limit of 0 mg/L (VALUE)
DMR, Monitor Only - Overdue
Nitrogen, nitrate total [as NO3]
0% over limit
Discharged 1 mg/L against a permitted limit of 0 mg/L (VALUE)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 188.5 mg/L against a permitted limit of 500 mg/L (MX VALUE)
DMR, Limited - Overdue
pH
0% over limit
Discharged 5.4 SU against a permitted limit of 0 SU (VALUE)
DMR, Monitor Only - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (VALUE)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 387.5 mg/L against a permitted limit of 500 mg/L (MX VALUE)
DMR, Limited - Overdue
Coliform, fecal general
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 0 MPN/100mL (VALUE)
DMR, Monitor Only - Overdue
Nitrogen, nitrite total [as NO2]
0% over limit
Discharged 0.0075 mg/L against a permitted limit of 0 mg/L (VALUE)
DMR, Monitor Only - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0.5 mg/L against a permitted limit of 0 mg/L (VALUE)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 229.5 mg/L against a permitted limit of 500 mg/L (MX VALUE)
DMR, Limited - Overdue
Nitrogen, nitrate total [as NO3]
0% over limit
Discharged 4.7 mg/L against a permitted limit of 0 mg/L (VALUE)
DMR, Monitor Only - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 2 mg/L against a permitted limit of 10 mg/L (MX VALUE)
DMR, Limited - Overdue
Chloride
0% over limit
Discharged 121.78 mg/L against a permitted limit of 250 mg/L (MX VALUE)
DMR, Limited - Overdue
pH
0% over limit
Discharged 6.2 SU against a permitted limit of 0 SU (VALUE)
DMR, Monitor Only - Overdue
Nitrogen, nitrate total [as NO3]
0% over limit
Discharged 1.75 mg/L against a permitted limit of 0 mg/L (VALUE)
DMR, Monitor Only - Overdue
Nitrogen, nitrite total [as NO2]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (VALUE)
DMR, Monitor Only - Overdue
Nitrogen, nitrite total [as NO2]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (VALUE)
DMR, Monitor Only - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 4.7 mg/L against a permitted limit of 10 mg/L (MX VALUE)
DMR, Limited - Overdue
Chloride
0% over limit
Discharged 8.56 mg/L against a permitted limit of 0 mg/L (VALUE)
DMR, Monitor Only - Overdue
Phosphate, total [as PO4]
0% over limit
Discharged 0.2 mg/L against a permitted limit of 0 mg/L (VALUE)
DMR, Monitor Only - Overdue
Nitrogen, nitrate total [as NO3]
0% over limit
Discharged 0.3 mg/L against a permitted limit of 0 mg/L (VALUE)
DMR, Monitor Only - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0.25 mg/L against a permitted limit of 0 mg/L (VALUE)
DMR, Monitor Only - Overdue
Phosphate, total [as PO4]
0% over limit
Discharged 0.25 mg/L against a permitted limit of 0 mg/L (VALUE)
DMR, Monitor Only - Overdue
Phosphate, total [as PO4]
0% over limit
Discharged 0.26 mg/L against a permitted limit of 0 mg/L (VALUE)
DMR, Monitor Only - Overdue
Coliform, fecal general
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 0 MPN/100mL (MX VALUE)
DMR, Limited - Overdue
Nitrogen, nitrite total [as NO2]
0% over limit
Discharged 0.03 mg/L against a permitted limit of 0 mg/L (VALUE)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 6.83 SU against a permitted limit of 0 SU (VALUE)
DMR, Monitor Only - Overdue
Chloride
0% over limit
Discharged 23.75 mg/L against a permitted limit of 250 mg/L (MX VALUE)
DMR, Limited - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (6 days ago)