AMITY STP
NPDES ID: OR0026212
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: 1 effluent violation.
Violations
April 30, 2026
BOD, 5-day, 20 deg. C
34% over limit
Discharged 35.4119997 kg/d against a permitted limit of 26.33199978 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
February 28, 2026
BOD, 5-day, 20 deg. C
72% over limit
Discharged 60.83599949 kg/d against a permitted limit of 35.4119997 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
13% over limit
Discharged 83 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
54% over limit
Discharged 27.23999977 kg/d against a permitted limit of 17.70599985 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
131% over limit
Discharged 60.83599949 kg/d against a permitted limit of 26.33199978 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
January 31, 2026
BOD, 5-day, 20 deg. C
49% over limit
Discharged 26.33199978 kg/d against a permitted limit of 17.70599985 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
129% over limit
Discharged 81.26599932 kg/d against a permitted limit of 35.4119997 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
209% over limit
Discharged 81.26599932 kg/d against a permitted limit of 26.33199978 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
May 31, 2025
BOD, 5-day, 20 deg. C
0% over limit
Discharged 611 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 699.3 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
April 30, 2025
BOD, 5-day, 20 deg. C
103% over limit
Discharged 53.57199955 kg/d against a permitted limit of 26.33199978 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
51% over limit
Discharged 53.57199955 kg/d against a permitted limit of 35.4119997 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Temperature, water deg. centigrade
0% over limit
Discharged 18.1 deg C against a permitted limit of 0 deg C (MX 7D AV)
DMR, Monitor Only - Overdue
March 31, 2025
BOD, 5-day, 20 deg. C
90% over limit
Discharged 33.59599972 kg/d against a permitted limit of 17.70599985 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
31% over limit
Discharged 34.50399971 kg/d against a permitted limit of 26.33199978 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
January 31, 2025
BOD, 5-day, 20 deg. C
3% over limit
Discharged 18.15999985 kg/d against a permitted limit of 17.70599985 kg/d (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (4 days ago)