TUSCANY LAKE/VISTA RIDGE WWTP
NPDES ID: MO0131661
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
Violations
March 31, 2026
Nitrogen, ammonia total [as N]
796% over limit
Discharged 21.5 mg/L against a permitted limit of 2.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
156% over limit
Discharged 21.5 mg/L against a permitted limit of 8.4 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Nitrogen, ammonia total [as N]
767% over limit
Discharged 20.8 mg/L against a permitted limit of 2.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
148% over limit
Discharged 20.8 mg/L against a permitted limit of 8.4 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2025
Chlorine, total residual
24300% over limit
Discharged 1.22000006 mg/L against a permitted limit of 0.005 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
2211% over limit
Discharged 20.8 mg/L against a permitted limit of 0.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
13650% over limit
Discharged 2.2000001 mg/L against a permitted limit of 0.016 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
201% over limit
Discharged 20.8 mg/L against a permitted limit of 6.9 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
June 30, 2025
Nitrogen, ammonia total [as N]
857% over limit
Discharged 13.4 mg/L against a permitted limit of 1.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
60% over limit
Discharged 13.4 mg/L against a permitted limit of 8.4 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
Nitrogen, ammonia total [as N]
683% over limit
Discharged 18.8 mg/L against a permitted limit of 2.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
124% over limit
Discharged 18.8 mg/L against a permitted limit of 8.4 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
Nitrogen, ammonia total [as N]
338% over limit
Discharged 10.5 mg/L against a permitted limit of 2.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
25% over limit
Discharged 10.5 mg/L against a permitted limit of 8.4 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2024
Nitrogen, ammonia total [as N]
219% over limit
Discharged 22 mg/L against a permitted limit of 6.9 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
2344% over limit
Discharged 22 mg/L against a permitted limit of 0.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)