ARCADIA EAST WWTF
NPDES ID: MO0080667
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: 7 effluent violations, 3 single-event violations.
Violations
June 30, 2026
Nitrogen, ammonia total [as N]
121% over limit
Discharged 3.1 mg/L against a permitted limit of 1.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
73% over limit
Discharged 78 mg/L against a permitted limit of 45 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
235% over limit
Discharged 3450 MPN/100mL against a permitted limit of 1030 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
E. coli
1575% over limit
Discharged 3450 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
20% over limit
Discharged 78 mg/L against a permitted limit of 65 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
20% over limit
Discharged 4.9 mg/L against a permitted limit of 4.1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
250% over limit
Discharged 4.9 mg/L against a permitted limit of 1.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
22% over limit
Discharged 5 mg/L against a permitted limit of 4.1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
Nitrogen, ammonia total [as N]
22% over limit
Discharged 5 mg/L against a permitted limit of 4.1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
pH
0% over limit
Discharged 6.49 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Numeric Violation
August 31, 2024
Nitrogen, ammonia total [as N]
32% over limit
Discharged 5.4 mg/L against a permitted limit of 4.1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 15, 2026 (4 hours ago)