OSWEGO (C) WEST SIDE WWTF
NPDES ID: NY0029106
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: 3 effluent violations.
Violations
April 30, 2026
Solids, total suspended
17% over limit
Discharged 796.31599331 kg/d against a permitted limit of 681.90799427 kg/d (7 DA AVG)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
25% over limit
Discharged 4.99 MGD against a permitted limit of 4 MGD (MO AVG)
DMR, Limited - Numeric Violation
Solids, settleable
133% over limit
Discharged 0.0007 mg/L against a permitted limit of 0.0003 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, total suspended
17% over limit
Discharged 796.31599331 kg/d against a permitted limit of 681.90799427 kg/d (7 DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
47% over limit
Discharged 78 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
42% over limit
Discharged 5.66 MGD against a permitted limit of 4 MGD (MO AVG)
DMR, Limited - Numeric Violation
Solids, settleable
300% over limit
Discharged 0.0012 mg/L against a permitted limit of 0.0003 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Flow, in conduit or thru treatment plant
4% over limit
Discharged 4.15 MGD against a permitted limit of 4 MGD (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Solids, settleable
133% over limit
Discharged 0.0007 mg/L against a permitted limit of 0.0003 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
BOD, 5-day, 20 deg. C
0% over limit
Discharged 155 mg/L against a permitted limit of 0 mg/L (7 DA AVG)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 136 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 37.68199968 kg/d against a permitted limit of 454.45399618 kg/d (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, percent removal
0% over limit
Discharged 96 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 7.7 mg/L against a permitted limit of 45 mg/L (7 DA AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 53.34499955 kg/d against a permitted limit of 681.90799427 kg/d (7 DA AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 4.8 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Overdue
May 31, 2025
Solids, settleable
267% over limit
Discharged 0.0011 mg/L against a permitted limit of 0.0003 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
Flow, in conduit or thru treatment plant
18% over limit
Discharged 4.72 MGD against a permitted limit of 4 MGD (MO AVG)
DMR, Limited - Numeric Violation
Solids, settleable
33% over limit
Discharged 0.0004 mg/L against a permitted limit of 0.0003 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
Solids, settleable
667% over limit
Discharged 0.0023 mg/L against a permitted limit of 0.0003 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal general
505% over limit
Discharged 2419.6 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Coliform, fecal general
1110% over limit
Discharged 2419.6 MPN/100mL against a permitted limit of 200 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
September 30, 2024
Solids, settleable
433% over limit
Discharged 0.0016 mg/L against a permitted limit of 0.0003 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2024
Solids, settleable
33% over limit
Discharged 0.0004 mg/L against a permitted limit of 0.0003 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)