STILL CREEK WTP
NPDES ID: PA0063053
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
Violations
January 31, 2026
Iron, total [as Fe]
150% over limit
Discharged 5 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Manganese, total [as Mn]
330% over limit
Discharged 4.3 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
105% over limit
Discharged 8.2 mg/L against a permitted limit of 4 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
152% over limit
Discharged 3.63199997 kg/d against a permitted limit of 1.43917999 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Manganese, total [as Mn]
260% over limit
Discharged 7.2 mg/L against a permitted limit of 2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Manganese, total [as Mn]
343% over limit
Discharged 3.17799997 kg/d against a permitted limit of 0.71731999 kg/d (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Iron, total [as Fe]
20% over limit
Discharged 4.8 mg/L against a permitted limit of 4 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Manganese, total [as Mn]
70% over limit
Discharged 3.4 mg/L against a permitted limit of 2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Manganese, total [as Mn]
27% over limit
Discharged 0.90799999 kg/d against a permitted limit of 0.71731999 kg/d (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Manganese, total [as Mn]
20% over limit
Discharged 1.2 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Manganese, total [as Mn]
27% over limit
Discharged 0.90799999 kg/d against a permitted limit of 0.71731999 kg/d (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Manganese, total [as Mn]
27% over limit
Discharged 0.90799999 kg/d against a permitted limit of 0.71731999 kg/d (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Manganese, total [as Mn]
27% over limit
Discharged 0.90799999 kg/d against a permitted limit of 0.71731999 kg/d (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)