INTERLAKEN (V) STP
NPDES ID: NY0029289
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 10 effluent violations.
Violations
May 31, 2026
Coliform, fecal general
145% over limit
Discharged 980.4 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
495% over limit
Discharged 11.3 mg/L against a permitted limit of 1.9 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
318% over limit
Discharged 2.09 mg/L against a permitted limit of 0.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
1233% over limit
Discharged 0.4 mg/L against a permitted limit of 0.03 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
20% over limit
Discharged 5.63 mg/L against a permitted limit of 7 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
April 30, 2026
Phosphorus, total [as P]
188% over limit
Discharged 1.44 mg/L against a permitted limit of 0.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
1233% over limit
Discharged 0.4 mg/L against a permitted limit of 0.03 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal general
98% over limit
Discharged 791.5 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
20% over limit
Discharged 5.63 mg/L against a permitted limit of 7 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
474% over limit
Discharged 10.9 mg/L against a permitted limit of 1.9 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
Oxygen, dissolved [DO]
5% over limit
Discharged 6.63 mg/L against a permitted limit of 7 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
Chlorine, total residual
1233% over limit
Discharged 0.4 mg/L against a permitted limit of 0.03 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
302% over limit
Discharged 2.01 mg/L against a permitted limit of 0.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
341% over limit
Discharged 8.38 mg/L against a permitted limit of 1.9 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Chlorine, total residual
900% over limit
Discharged 0.3 mg/L against a permitted limit of 0.03 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
18% over limit
Discharged 5.9 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
596% over limit
Discharged 3.48 mg/L against a permitted limit of 0.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1063% over limit
Discharged 22.1 mg/L against a permitted limit of 1.9 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
4% over limit
Discharged 6.7 mg/L against a permitted limit of 7 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
January 31, 2026
Phosphorus, total [as P]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.5 mg/L (MO AVG)
DMR, Limited - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 1.9 mg/L (DAILY MX)
DMR, Limited - Overdue
Chlorine, total residual
1233% over limit
Discharged 0.4 mg/L against a permitted limit of 0.03 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
0% over limit
Discharged 0 mg/L against a permitted limit of 7 mg/L (DAILY MN)
DMR, Limited - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (22 days ago)