SUBURBAN TERRACE MHC STP
NPDES ID: PA0094137
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
Violations
March 31, 2026
BOD, carbonaceous [5 day, 20 C]
90% over limit
Discharged 19 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
47% over limit
Discharged 29.3 mg/L against a permitted limit of 20 mg/L (INST MAX)
DMR, Limited - Numeric Violation
February 28, 2026
BOD, carbonaceous [5 day, 20 C]
8% over limit
Discharged 21.5 mg/L against a permitted limit of 20 mg/L (INST MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
30% over limit
Discharged 13 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
BOD, carbonaceous [5 day, 20 C]
90% over limit
Discharged 19 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
80% over limit
Discharged 35.9 mg/L against a permitted limit of 20 mg/L (INST MAX)
DMR, Limited - Numeric Violation
November 30, 2025
BOD, carbonaceous [5 day, 20 C]
300% over limit
Discharged 40 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
262% over limit
Discharged 72.4 mg/L against a permitted limit of 20 mg/L (INST MAX)
DMR, Limited - Numeric Violation
April 30, 2025
BOD, carbonaceous [5 day, 20 C]
29% over limit
Discharged 25.8 mg/L against a permitted limit of 20 mg/L (INST MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
130% over limit
Discharged 23 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
BOD, carbonaceous [5 day, 20 C]
110% over limit
Discharged 21 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
19% over limit
Discharged 23.8 mg/L against a permitted limit of 20 mg/L (INST MAX)
DMR, Limited - Numeric Violation
February 28, 2025
BOD, carbonaceous [5 day, 20 C]
87% over limit
Discharged 37.3 mg/L against a permitted limit of 20 mg/L (INST MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
120% over limit
Discharged 22 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
120% over limit
Discharged 22 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
95% over limit
Discharged 39 mg/L against a permitted limit of 20 mg/L (INST MAX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (5 days ago)