SOUTH SIDE SCH STP
NPDES ID: PA0203696
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
This quarter: 3 effluent violations, 15 reporting violations.
Violations
April 30, 2026
Oxygen, dissolved [DO]
96% over limit
Discharged 0.21 mg/L against a permitted limit of 5 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
Chlorine, total residual
19% over limit
Discharged 0.594 mg/L against a permitted limit of 0.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 10.67 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
March 31, 2026
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0.02 MGD (MO AVG)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.5 mg/L (MO AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 1.6 mg/L (INST MAX)
DMR, Limited - Overdue
Coliform, fecal general
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 2000 MPN/100mL (GEO MEAN)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0 mg/L against a permitted limit of 20 mg/L (INST MAX)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 0 mg/L against a permitted limit of 5 mg/L (DAILY MN)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (INST MIN)
DMR, Limited - Overdue
Coliform, fecal general
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 10000 MPN/100mL (INST MAX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 18 mg/L (INST MAX)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 50 mg/L (INST MAX)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 9 mg/L (MO AVG)
DMR, Limited - Overdue
February 28, 2026
Solids, total suspended
30% over limit
Discharged 32.5 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
23% over limit
Discharged 3.85 mg/L against a permitted limit of 5 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
Chlorine, total residual
29% over limit
Discharged 0.647 mg/L against a permitted limit of 0.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
8% over limit
Discharged 9.7 mg/L against a permitted limit of 9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Chlorine, total residual
83% over limit
Discharged 0.915 mg/L against a permitted limit of 0.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
132% over limit
Discharged 58 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
56% over limit
Discharged 2.2 mg/L against a permitted limit of 5 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 10.21 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
52% over limit
Discharged 76 mg/L against a permitted limit of 50 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Chlorine, total residual
63% over limit
Discharged 2.61 mg/L against a permitted limit of 1.6 mg/L (INST MAX)
DMR, Limited - Numeric Violation
December 31, 2025
Solids, total suspended
19% over limit
Discharged 29.8 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Nitrogen, ammonia total [as N]
62% over limit
Discharged 14.6 mg/L against a permitted limit of 9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
26% over limit
Discharged 22.7 mg/L against a permitted limit of 18 mg/L (INST MAX)
DMR, Limited - Numeric Violation
October 31, 2025
Oxygen, dissolved [DO]
20% over limit
Discharged 4.01 mg/L against a permitted limit of 5 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
Chlorine, total residual
9% over limit
Discharged 0.543 mg/L against a permitted limit of 0.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
7% over limit
Discharged 26.8 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Oxygen, dissolved [DO]
20% over limit
Discharged 4.01 mg/L against a permitted limit of 5 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
July 31, 2025
Oxygen, dissolved [DO]
41% over limit
Discharged 2.97 mg/L against a permitted limit of 5 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
June 30, 2025
Oxygen, dissolved [DO]
53% over limit
Discharged 2.36 mg/L against a permitted limit of 5 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
Coliform, fecal general
82% over limit
Discharged 364 MPN/100mL against a permitted limit of 200 MPN/100mL (GEO MEAN)
DMR, Limited - Numeric Violation
April 30, 2025
Oxygen, dissolved [DO]
25% over limit
Discharged 3.76 mg/L against a permitted limit of 5 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
227% over limit
Discharged 58.9 mg/L against a permitted limit of 18 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
240% over limit
Discharged 30.6 mg/L against a permitted limit of 9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Oxygen, dissolved [DO]
20% over limit
Discharged 4 mg/L against a permitted limit of 5 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
February 28, 2025
Solids, total suspended
66% over limit
Discharged 41.5 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
6% over limit
Discharged 53 mg/L against a permitted limit of 50 mg/L (INST MAX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)