TEKOA STP
NPDES ID: WA0023141
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: 9 effluent violations.
Violations
June 30, 2026
Solids, total suspended
34% over limit
Discharged 31.45765974 kg/d against a permitted limit of 23.4717998 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
43% over limit
Discharged 64.4 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1323% over limit
Discharged 18.5 mg/L against a permitted limit of 1.3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
24% over limit
Discharged 37.175 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
671% over limit
Discharged 18.5 mg/L against a permitted limit of 2.4 mg/L (MAXIMUM)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
33% over limit
Discharged 80.01 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
6% over limit
Discharged 16.55737986 kg/d against a permitted limit of 15.66299987 kg/d (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2026
Nitrogen, ammonia total [as N]
173% over limit
Discharged 3.55 mg/L against a permitted limit of 1.3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
48% over limit
Discharged 3.55 mg/L against a permitted limit of 2.4 mg/L (MAXIMUM)
DMR, Limited - Numeric Violation
March 31, 2026
Flow
10% over limit
Discharged 0.220903 MGD against a permitted limit of 0.2 MGD (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
235% over limit
Discharged 49.81 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
115% over limit
Discharged 2.8 mg/L against a permitted limit of 1.3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
229% over limit
Discharged 148 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
265% over limit
Discharged 85.73789928 kg/d against a permitted limit of 23.4717998 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
17% over limit
Discharged 2.8 mg/L against a permitted limit of 2.4 mg/L (MAXIMUM)
DMR, Limited - Numeric Violation
Solids, total suspended
53% over limit
Discharged 24.0211398 kg/d against a permitted limit of 15.66299987 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
34% over limit
Discharged 40.15 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Solids, suspended percent removal
106% over limit
Discharged 69.13 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
February 28, 2025
Solids, total suspended
59% over limit
Discharged 24.95751479 kg/d against a permitted limit of 15.66299987 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
134% over limit
Discharged 64.97 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
54% over limit
Discharged 69.5 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
279% over limit
Discharged 88.94313925 kg/d against a permitted limit of 23.4717998 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
700% over limit
Discharged 1600 MPN/100mL against a permitted limit of 200 MPN/100mL (WK GEOMN)
DMR, Limited - Numeric Violation
January 31, 2025
Solids, suspended percent removal
20% over limit
Discharged 81.94 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
December 31, 2024
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 1.3 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.4 mg/L (MAXIMUM)
DMR, Limited - Overdue
November 30, 2024
Solids, suspended percent removal
18% over limit
Discharged 82.3 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 16, 2026 (yesterday)