W GREENE MIDDLE- SR HIGH SCH STP
NPDES ID: PA0033626
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: 1 effluent violation, 1 single-event violation.
Violations
April 30, 2026
Nitrogen, ammonia total [as N]
36% over limit
Discharged 6.1 mg/L against a permitted limit of 4.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
158% over limit
Discharged 11.6 mg/L against a permitted limit of 4.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
49% over limit
Discharged 13.4 mg/L against a permitted limit of 9 mg/L (INST MAX)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
238% over limit
Discharged 30.4 mg/L against a permitted limit of 9 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
297% over limit
Discharged 17.85 mg/L against a permitted limit of 4.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Nitrogen, ammonia total [as N]
630% over limit
Discharged 10.95 mg/L against a permitted limit of 1.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
9% over limit
Discharged 10.9 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
603% over limit
Discharged 21.1 mg/L against a permitted limit of 3 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Chlorine, total residual
44% over limit
Discharged 2.31 mg/L against a permitted limit of 1.6 mg/L (INST MAX)
DMR, Limited - Numeric Violation
September 30, 2025
pH
0% over limit
Discharged 5.8 SU against a permitted limit of 6 SU (INST MIN)
DMR, Limited - Numeric Violation
July 31, 2025
Solids, total suspended
453% over limit
Discharged 110.6 mg/L against a permitted limit of 20 mg/L (INST MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
1064% over limit
Discharged 116.35 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
757% over limit
Discharged 171.3 mg/L against a permitted limit of 20 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
80% over limit
Discharged 1 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
Solids, total suspended
533% over limit
Discharged 63.3 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Chlorine, total residual
18% over limit
Discharged 0.592 mg/L against a permitted limit of 0.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
3372% over limit
Discharged 347.15 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
11900% over limit
Discharged 1200 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
11850% over limit
Discharged 2390 mg/L against a permitted limit of 20 mg/L (INST MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
3347% over limit
Discharged 689.3 mg/L against a permitted limit of 20 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
15% over limit
Discharged 4.25 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
April 30, 2025
BOD, carbonaceous [5 day, 20 C]
57% over limit
Discharged 15.7 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
12% over limit
Discharged 11.2 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
4% over limit
Discharged 4.8 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
18% over limit
Discharged 23.5 mg/L against a permitted limit of 20 mg/L (INST MAX)
DMR, Limited - Numeric Violation
February 28, 2025
Oxygen, dissolved [DO]
12% over limit
Discharged 4.4 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
January 31, 2025
Chlorine, total residual
16% over limit
Discharged 1.85 mg/L against a permitted limit of 1.6 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Chlorine, total residual
86% over limit
Discharged 0.93 mg/L against a permitted limit of 0.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Oxygen, dissolved [DO]
26% over limit
Discharged 3.7 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
November 30, 2024
Chlorine, total residual
42% over limit
Discharged 2.27 mg/L against a permitted limit of 1.6 mg/L (INST MAX)
DMR, Limited - Numeric Violation
October 31, 2024
Chlorine, total residual
1544% over limit
Discharged 26.3 mg/L against a permitted limit of 1.6 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Chlorine, total residual
2530% over limit
Discharged 13.15 mg/L against a permitted limit of 0.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Chlorine, total residual
33% over limit
Discharged 2.12 mg/L against a permitted limit of 1.6 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Chlorine, total residual
112% over limit
Discharged 1.06 mg/L against a permitted limit of 0.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Chlorine, total residual
500% over limit
Discharged 9.6 mg/L against a permitted limit of 1.6 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Chlorine, total residual
860% over limit
Discharged 4.8 mg/L against a permitted limit of 0.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (5 days ago)