MILLBROOK STP
NPDES ID: NY0025429
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
Violations
March 31, 2026
Solids, total suspended
15% over limit
Discharged 24.56139979 kg/d against a permitted limit of 21.33799982 kg/d (7 DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
93% over limit
Discharged 27.19459977 kg/d against a permitted limit of 14.07399988 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
95% over limit
Discharged 41.67719965 kg/d against a permitted limit of 21.33799982 kg/d (7 DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
7% over limit
Discharged 84 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
15% over limit
Discharged 26.5 mg/L against a permitted limit of 23 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
24% over limit
Discharged 18.6 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
19% over limit
Discharged 16.70719986 kg/d against a permitted limit of 14.07399988 kg/d (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Solids, total suspended
56% over limit
Discharged 21.92819982 kg/d against a permitted limit of 14.07399988 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
50% over limit
Discharged 31.98429973 kg/d against a permitted limit of 21.33799982 kg/d (7DA ARME)
DMR, Limited - Numeric Violation
Solids, total suspended
23% over limit
Discharged 26.15039978 kg/d against a permitted limit of 21.33799982 kg/d (7DA ARME)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
33% over limit
Discharged 80 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
95% over limit
Discharged 27.39889977 kg/d against a permitted limit of 14.07399988 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
89900% over limit
Discharged 1.8 mg/L against a permitted limit of 0.002 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
20% over limit
Discharged 82 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
23% over limit
Discharged 17.2 mg/L against a permitted limit of 14 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
16% over limit
Discharged 17.4 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
0% over limit
Discharged 22.1 mg/L against a permitted limit of 22 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Temperature, water deg. fahrenheit
0% over limit
Discharged 77 deg F against a permitted limit of 0 deg F (DAILY MX)
DMR, Monitor Only - Overdue
July 31, 2024
Temperature, water deg. fahrenheit
0% over limit
Discharged 79 deg F against a permitted limit of 0 deg F (DAILY MX)
DMR, Monitor Only - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (7 days ago)