PWSD #2, WRIGHT CITY SOUTH WWTF
NPDES ID: MO0140503
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: 6 effluent violations.
Violations
May 31, 2026
Chloride
155% over limit
Discharged 480 mg/L against a permitted limit of 188 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chloride
27% over limit
Discharged 480 mg/L against a permitted limit of 378 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2026
Chloride
36% over limit
Discharged 515 mg/L against a permitted limit of 378 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chloride
174% over limit
Discharged 515 mg/L against a permitted limit of 188 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Chloride
1% over limit
Discharged 382 mg/L against a permitted limit of 378 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chloride
103% over limit
Discharged 382 mg/L against a permitted limit of 188 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Chloride
54% over limit
Discharged 583 mg/L against a permitted limit of 378 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chloride
210% over limit
Discharged 583 mg/L against a permitted limit of 188 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Chloride
240% over limit
Discharged 640 mg/L against a permitted limit of 188 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chloride
69% over limit
Discharged 640 mg/L against a permitted limit of 378 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Chloride
26% over limit
Discharged 476 mg/L against a permitted limit of 378 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chloride
153% over limit
Discharged 476 mg/L against a permitted limit of 188 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Chloride
58% over limit
Discharged 598 mg/L against a permitted limit of 378 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chloride
218% over limit
Discharged 598 mg/L against a permitted limit of 188 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Chloride
248% over limit
Discharged 654 mg/L against a permitted limit of 188 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chloride
73% over limit
Discharged 654 mg/L against a permitted limit of 378 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2025
Chloride
205% over limit
Discharged 574 mg/L against a permitted limit of 188 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chloride
52% over limit
Discharged 574 mg/L against a permitted limit of 378 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
Chloride
63% over limit
Discharged 615 mg/L against a permitted limit of 378 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chloride
227% over limit
Discharged 615 mg/L against a permitted limit of 188 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
10% over limit
Discharged 1.1 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Chloride
63% over limit
Discharged 615 mg/L against a permitted limit of 378 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chloride
227% over limit
Discharged 615 mg/L against a permitted limit of 188 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
55% over limit
Discharged 3.41 mg/L against a permitted limit of 2.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Iron, total recoverable
5% over limit
Discharged 0.86000004 mg/L against a permitted limit of 0.81900004 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Nitrogen, ammonia total [as N]
4% over limit
Discharged 2.29 mg/L against a permitted limit of 2.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chloride
72% over limit
Discharged 652 mg/L against a permitted limit of 378 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chloride
247% over limit
Discharged 652 mg/L against a permitted limit of 188 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Chloride
3% over limit
Discharged 389 mg/L against a permitted limit of 378 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chloride
107% over limit
Discharged 389 mg/L against a permitted limit of 188 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Chloride
43% over limit
Discharged 541 mg/L against a permitted limit of 378 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chloride
188% over limit
Discharged 541 mg/L against a permitted limit of 188 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
18% over limit
Discharged 8.27 mg/L against a permitted limit of 7 mg/L (AVERAGE)
DMR, Limited - Numeric Violation
March 31, 2025
Oxygen, dissolved [DO]
57% over limit
Discharged 11.01 mg/L against a permitted limit of 7 mg/L (AVERAGE)
DMR, Limited - Numeric Violation
Chloride
58% over limit
Discharged 297 mg/L against a permitted limit of 188 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Oxygen, dissolved [DO]
52% over limit
Discharged 10.65 mg/L against a permitted limit of 7 mg/L (AVERAGE)
DMR, Limited - Numeric Violation
Chloride
40% over limit
Discharged 263 mg/L against a permitted limit of 188 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)