TREZEVANT STP
NPDES ID: TN0062201
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: 2 effluent violations.
Violations
June 30, 2026
Nitrogen, ammonia total [as N]
51% over limit
Discharged 5.49249195 kg/d against a permitted limit of 3.63199997 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
19% over limit
Discharged 5.945 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Chlorine, total residual
10% over limit
Discharged 0.33 mg/L against a permitted limit of 0.3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Chlorine, total residual
7% over limit
Discharged 0.32 mg/L against a permitted limit of 0.3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
0% over limit
Discharged 15.05 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
40% over limit
Discharged 15.86866187 kg/d against a permitted limit of 11.3499999 kg/d (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Chlorine, total residual
47% over limit
Discharged 0.44 mg/L against a permitted limit of 0.3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
BOD, 5-day, 20 deg. C
0% over limit
Discharged 2 mg/L against a permitted limit of 50 mg/L (WKLY AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 19.38579984 kg/d against a permitted limit of 83.0819993 kg/d (WKLY AVG)
DMR, Limited - Overdue
E. coli
0% over limit
Discharged 3 MPN/100mL against a permitted limit of 941 MPN/100mL (DAILY MX)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 19.38579984 kg/d against a permitted limit of 90.79999924 kg/d (DAILY MX)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 19.38579984 kg/d against a permitted limit of 75.81799936 kg/d (MO AVG)
DMR, Limited - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 8.6 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 20 mg/L (WKLY AVG)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0.45 mg/L against a permitted limit of 0.5 mg/L (DAILY MX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 6.3 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 6.4 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 21 mg/L against a permitted limit of 120 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 1.86139998 kg/d against a permitted limit of 34.04999971 kg/d (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 21 mg/L against a permitted limit of 110 mg/L (WKLY AVG)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0.22 mg/L against a permitted limit of 0.3 mg/L (MO AVG)
DMR, Limited - Overdue
SSO, Wet Weather
0% over limit
Discharged 0 occur/d against a permitted limit of 0 occur/d (MO TOTAL)
DMR, Limited - Overdue
E. coli
0% over limit
Discharged 3 MPN/100mL against a permitted limit of 126 MPN/100mL (MO GEOMN)
DMR, Limited - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 1.13499999 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 21 mg/L against a permitted limit of 100 mg/L (MO AVG)
DMR, Limited - Overdue
Solids, settleable
0% over limit
Discharged 0.0001 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 2 mg/L against a permitted limit of 45 mg/L (MO AVG)
DMR, Limited - Overdue
SSO, Dry Weather
0% over limit
Discharged 0 occur/d against a permitted limit of 0 occur/d (MO TOTAL)
DMR, Limited - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 7.94499993 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 kg/d against a permitted limit of 19.06799984 kg/d (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, percent removal
0% over limit
Discharged 99.4 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 kg/d against a permitted limit of 14.98199987 kg/d (WKLY AVG)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 6.5 mg/L against a permitted limit of 1 mg/L (INST MIN)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 1.86139998 kg/d against a permitted limit of 49.03199959 kg/d (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 1.86139998 kg/d against a permitted limit of 37.68199968 kg/d (WKLY AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 kg/d against a permitted limit of 11.3499999 kg/d (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 25 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 2 mg/L against a permitted limit of 65 mg/L (DAILY MX)
DMR, Limited - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 1.22 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
June 30, 2025
pH
0% over limit
Discharged 5.7 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
April 30, 2025
SSO, Wet Weather
Limit violation
Discharged 0.0658 occur/d against a permitted limit of 0 occur/d (MO TOTAL)
DMR, Limited - Numeric Violation
February 28, 2025
SSO, Wet Weather
Limit violation
Discharged 0.09870001 occur/d against a permitted limit of 0 occur/d (MO TOTAL)
DMR, Limited - Numeric Violation
January 31, 2025
Nitrogen, ammonia total [as N]
8% over limit
Discharged 12.2103299 kg/d against a permitted limit of 11.3499999 kg/d (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2024
SSO, Wet Weather
Limit violation
Discharged 0.0329 occur/d against a permitted limit of 0 occur/d (MO TOTAL)
DMR, Limited - Numeric Violation
October 31, 2024
Nitrogen, ammonia total [as N]
26% over limit
Discharged 8.81 mg/L against a permitted limit of 7 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1% over limit
Discharged 7.77247993 kg/d against a permitted limit of 7.71799994 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
114% over limit
Discharged 7.77247993 kg/d against a permitted limit of 3.63199997 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
76% over limit
Discharged 8.81 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
43% over limit
Discharged 7.77247993 kg/d against a permitted limit of 5.44799995 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Nitrogen, ammonia total [as N]
52% over limit
Discharged 11.7272739 kg/d against a permitted limit of 7.71799994 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
16% over limit
Discharged 11.6 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
115% over limit
Discharged 11.7272739 kg/d against a permitted limit of 5.44799995 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
132% over limit
Discharged 11.6 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
223% over limit
Discharged 11.7272739 kg/d against a permitted limit of 3.63199997 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
66% over limit
Discharged 11.6 mg/L against a permitted limit of 7 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 15, 2026 (10 hours ago)