RAYVILLE WWTF
NPDES ID: LA0020559
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: 17 effluent violations.
Violations
May 31, 2026
Solids, total suspended
232% over limit
Discharged 49.86 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.5 SU against a permitted limit of 8.5 SU (INST MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
40% over limit
Discharged 6.99 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
8% over limit
Discharged 8.66 mg/L against a permitted limit of 8 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
144% over limit
Discharged 56.2 mg/L against a permitted limit of 23 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
129% over limit
Discharged 194.44819837 kg/d against a permitted limit of 84.89799929 kg/d (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Solids, total suspended
126% over limit
Discharged 52.03 mg/L against a permitted limit of 23 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Whole Effluent Toxicity [WET] - P. promelas
25% over limit
Discharged 72 % against a permitted limit of 96 % (MO AV MN)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 8.7 SU against a permitted limit of 8.5 SU (INST MAX)
DMR, Limited - Numeric Violation
Whole Effluent Toxicity [WET] - P. promelas
25% over limit
Discharged 72 % against a permitted limit of 96 % (7 DA MIN)
DMR, Limited - Numeric Violation
Solids, total suspended
88% over limit
Discharged 159.88517866 kg/d against a permitted limit of 84.89799929 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
205% over limit
Discharged 45.79 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Whole Effluent Toxicity [WET] - C. dubia
69% over limit
Discharged 30 % against a permitted limit of 96 % (MO AV MN)
DMR, Limited - Numeric Violation
Whole Effluent Toxicity [WET] - C. dubia
69% over limit
Discharged 30 % against a permitted limit of 96 % (7 DA MIN)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, total suspended
130% over limit
Discharged 34.53 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
63% over limit
Discharged 37.55 mg/L against a permitted limit of 23 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
214% over limit
Discharged 266.87481776 kg/d against a permitted limit of 84.89799929 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
2% over limit
Discharged 10.19 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
39% over limit
Discharged 78.73267934 kg/d against a permitted limit of 56.74999952 kg/d (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Solids, total suspended
60% over limit
Discharged 135.48721886 kg/d against a permitted limit of 84.89799929 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
36% over limit
Discharged 31.22 mg/L against a permitted limit of 23 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
47% over limit
Discharged 22.11 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
26% over limit
Discharged 12.64 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
36% over limit
Discharged 77.46147935 kg/d against a permitted limit of 56.74999952 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
9% over limit
Discharged 16.29 mg/L against a permitted limit of 15 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Solids, total suspended
56% over limit
Discharged 132.18663889 kg/d against a permitted limit of 84.89799929 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
136% over limit
Discharged 54.3 mg/L against a permitted limit of 23 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
43% over limit
Discharged 21.45 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Solids, total suspended
70% over limit
Discharged 143.99517879 kg/d against a permitted limit of 84.89799929 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
79% over limit
Discharged 26.86 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
63% over limit
Discharged 37.51 mg/L against a permitted limit of 23 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Solids, total suspended
10% over limit
Discharged 16.49 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
57% over limit
Discharged 36.09 mg/L against a permitted limit of 23 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
October 31, 2025
BOD, carbonaceous [5 day, 20 C]
18% over limit
Discharged 5.88 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
31% over limit
Discharged 36.91019969 kg/d against a permitted limit of 28.14799976 kg/d (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Coliform, fecal general
7% over limit
Discharged 427 MPN/100mL against a permitted limit of 400 MPN/100mL (WKAV GEO)
DMR, Limited - Numeric Violation
August 31, 2025
pH
0% over limit
Discharged 9 SU against a permitted limit of 8.5 SU (INST MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
5% over limit
Discharged 5.26 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Coliform, fecal general
18% over limit
Discharged 235 MPN/100mL against a permitted limit of 200 MPN/100mL (MOAV GEO)
DMR, Limited - Numeric Violation
May 31, 2025
Solids, total suspended
26% over limit
Discharged 29 mg/L against a permitted limit of 23 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
40% over limit
Discharged 559 MPN/100mL against a permitted limit of 400 MPN/100mL (WKAV GEO)
DMR, Limited - Numeric Violation
Whole Effluent Toxicity [WET] - C. dubia
69% over limit
Discharged 30 % against a permitted limit of 96 % (7 DA MIN)
DMR, Limited - Numeric Violation
Whole Effluent Toxicity [WET] - C. dubia
69% over limit
Discharged 30 % against a permitted limit of 96 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
78% over limit
Discharged 151.15929873 kg/d against a permitted limit of 84.89799929 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
59% over limit
Discharged 23.81 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
19% over limit
Discharged 33.40985972 kg/d against a permitted limit of 28.14799976 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
5% over limit
Discharged 5.26 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Solids, total suspended
27% over limit
Discharged 29.12 mg/L against a permitted limit of 23 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
37% over limit
Discharged 20.52 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
33% over limit
Discharged 113.07777905 kg/d against a permitted limit of 84.89799929 kg/d (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Solids, total suspended
26% over limit
Discharged 18.96 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
31% over limit
Discharged 111.35257906 kg/d against a permitted limit of 84.89799929 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
18% over limit
Discharged 27.21 mg/L against a permitted limit of 23 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Solids, total suspended
7% over limit
Discharged 90.47765924 kg/d against a permitted limit of 84.89799929 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Whole Effluent Toxicity [WET] - P. promelas
69% over limit
Discharged 30 % against a permitted limit of 96 % (7 DA MIN)
DMR, Limited - Numeric Violation
Whole Effluent Toxicity [WET] - P. promelas
69% over limit
Discharged 30 % against a permitted limit of 96 % (MO AV MN)
DMR, Limited - Numeric Violation
January 31, 2025
Solids, total suspended
24% over limit
Discharged 18.53 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
40% over limit
Discharged 119.202239 kg/d against a permitted limit of 84.89799929 kg/d (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Solids, total suspended
3% over limit
Discharged 23.58 mg/L against a permitted limit of 23 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
30% over limit
Discharged 19.5 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (4 days ago)