TORONTO, CITY OF (WWTP)
NPDES ID: KS0021890
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: 4 effluent violations.
Violations
May 31, 2026
Nitrogen, ammonia total [as N]
0% over limit
Discharged 4.92 mg/L against a permitted limit of 4.9 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
E. coli
550% over limit
Discharged 1040 MPN/100mL against a permitted limit of 160 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
208% over limit
Discharged 4.92 mg/L against a permitted limit of 1.6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
E. coli
2781% over limit
Discharged 4610 MPN/100mL against a permitted limit of 160 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
February 28, 2026
E. coli
96% over limit
Discharged 4610 MPN/100mL against a permitted limit of 2358 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
153% over limit
Discharged 8.86 mg/L against a permitted limit of 3.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
114% over limit
Discharged 7.5 mg/L against a permitted limit of 3.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
58% over limit
Discharged 5.7 mg/L against a permitted limit of 3.6 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
375% over limit
Discharged 5.7 mg/L against a permitted limit of 1.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
E. coli
713% over limit
Discharged 1300 MPN/100mL against a permitted limit of 160 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
July 31, 2025
Nitrogen, ammonia total [as N]
694% over limit
Discharged 7.15 mg/L against a permitted limit of 0.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
165% over limit
Discharged 7.15 mg/L against a permitted limit of 2.7 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
June 30, 2025
E. coli
262% over limit
Discharged 579 MPN/100mL against a permitted limit of 160 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
May 31, 2025
Nitrogen, ammonia total [as N]
321% over limit
Discharged 6.74 mg/L against a permitted limit of 1.6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
38% over limit
Discharged 6.74 mg/L against a permitted limit of 4.9 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
Nitrogen, ammonia total [as N]
7% over limit
Discharged 8.32 mg/L against a permitted limit of 7.8 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
262% over limit
Discharged 8.32 mg/L against a permitted limit of 2.3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Nitrogen, ammonia total [as N]
126% over limit
Discharged 7.23 mg/L against a permitted limit of 3.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Nitrogen, ammonia total [as N]
183% over limit
Discharged 9.9 mg/L against a permitted limit of 3.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
3% over limit
Discharged 9.9 mg/L against a permitted limit of 9.6 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2025
Nitrogen, ammonia total [as N]
346% over limit
Discharged 15.6 mg/L against a permitted limit of 3.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
63% over limit
Discharged 15.6 mg/L against a permitted limit of 9.6 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
E. coli
3% over limit
Discharged 2419.6 MPN/100mL against a permitted limit of 2358 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
December 31, 2024
Nitrogen, ammonia total [as N]
251% over limit
Discharged 12.3 mg/L against a permitted limit of 3.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
28% over limit
Discharged 12.3 mg/L against a permitted limit of 9.6 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2024
Nitrogen, ammonia total [as N]
789% over limit
Discharged 16.9 mg/L against a permitted limit of 1.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
173% over limit
Discharged 16.9 mg/L against a permitted limit of 6.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2024
Nitrogen, ammonia total [as N]
386% over limit
Discharged 17.5 mg/L against a permitted limit of 3.6 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1358% over limit
Discharged 17.5 mg/L against a permitted limit of 1.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Nitrogen, ammonia total [as N]
1390% over limit
Discharged 14.9 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
414% over limit
Discharged 14.9 mg/L against a permitted limit of 2.9 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2024
Nitrogen, ammonia total [as N]
928% over limit
Discharged 9.25 mg/L against a permitted limit of 0.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
243% over limit
Discharged 9.25 mg/L against a permitted limit of 2.7 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)