TRENTON SEWER UTILITY
NPDES ID: NJ0020923
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: 6 effluent violations.
Violations
April 30, 2026
Chlorine produced oxidants
833% over limit
Discharged 1.95 mg/L against a permitted limit of 0.209 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine produced oxidants
313% over limit
Discharged 57.87 kg/d against a permitted limit of 14.02 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
9% over limit
Discharged 32.7 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorine produced oxidants
754% over limit
Discharged 1.58 mg/L against a permitted limit of 0.185 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
14% over limit
Discharged 5.69 mg/L against a permitted limit of 5 mg/L (1DA AVG)
DMR, Limited - Numeric Violation
Chlorine produced oxidants
353% over limit
Discharged 71.63 kg/d against a permitted limit of 15.82 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
Chlorine produced oxidants
847% over limit
Discharged 1.98 mg/L against a permitted limit of 0.209 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
29% over limit
Discharged 6.44 mg/L against a permitted limit of 5 mg/L (1DA AVG)
DMR, Limited - Numeric Violation
Chlorine produced oxidants
437% over limit
Discharged 85 kg/d against a permitted limit of 15.82 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine produced oxidants
377% over limit
Discharged 66.93 kg/d against a permitted limit of 14.02 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
3% over limit
Discharged 30.79 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorine produced oxidants
743% over limit
Discharged 1.56 mg/L against a permitted limit of 0.185 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Solids, total suspended
6% over limit
Discharged 31.86 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia
0% over limit
Discharged 554.9 % against a permitted limit of 0 % (MINIMUM)
DMR, Monitor Only - Overdue
LC50 Static 48Hr Acute Ceriodaphnia dubia
0% over limit
Discharged 50 % against a permitted limit of 50 % (MINIMUM)
DMR, Limited - Overdue
September 30, 2025
BOD, 5-day, 20 deg. C
5% over limit
Discharged 47.27 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
July 31, 2025
LC50 Static 48Hr Acute Ceriodaphnia dubia
0% over limit
Discharged 100 % against a permitted limit of 50 % (MINIMUM)
DMR, Limited - Overdue
March 31, 2025
Oxygen, dissolved [DO]
25% over limit
Discharged 6.27 mg/L against a permitted limit of 5 mg/L (1DA AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Oxygen, dissolved [DO]
60% over limit
Discharged 8.01 mg/L against a permitted limit of 5 mg/L (1DA AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Oxygen, dissolved [DO]
62% over limit
Discharged 8.11 mg/L against a permitted limit of 5 mg/L (1DA AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Oxygen, dissolved [DO]
58% over limit
Discharged 7.92 mg/L against a permitted limit of 5 mg/L (1DA AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Oxygen, dissolved [DO]
40% over limit
Discharged 7.02 mg/L against a permitted limit of 5 mg/L (1DA AVG)
DMR, Limited - Numeric Violation
October 31, 2024
Oxygen, dissolved [DO]
46% over limit
Discharged 7.28 mg/L against a permitted limit of 5 mg/L (1DA AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Oxygen, dissolved [DO]
27% over limit
Discharged 6.33 mg/L against a permitted limit of 5 mg/L (1DA AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Oxygen, dissolved [DO]
12% over limit
Discharged 5.62 mg/L against a permitted limit of 5 mg/L (1DA AVG)
DMR, Limited - Numeric Violation
July 31, 2024
Oxygen, dissolved [DO]
10% over limit
Discharged 5.49 mg/L against a permitted limit of 5 mg/L (1DA AVG)
DMR, Limited - Numeric Violation
IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia
0% over limit
Discharged 386.1 % against a permitted limit of 0 % (MINIMUM)
DMR, Monitor Only - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)