BUENA VISTA STP
NPDES ID: VA0020991
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: 4 effluent violations.
Violations
May 31, 2026
Nitrogen, ammonia total [as N]
52% over limit
Discharged 12.3 mg/L against a permitted limit of 8.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
50% over limit
Discharged 15 mg/L against a permitted limit of 10 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
30% over limit
Discharged 13 mg/L against a permitted limit of 10 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
52% over limit
Discharged 12.3 mg/L against a permitted limit of 8.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
BOD, percent removal [total]
320% over limit
Discharged 37 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
2% over limit
Discharged 8.3 mg/L against a permitted limit of 8.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
333% over limit
Discharged 35 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
February 28, 2026
Solids, total suspended
12% over limit
Discharged 426 kg/d against a permitted limit of 380 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
Solids, total suspended
64% over limit
Discharged 74 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
27% over limit
Discharged 28 mg/L against a permitted limit of 22 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
94% over limit
Discharged 15.7 mg/L against a permitted limit of 8.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
24% over limit
Discharged 41 mg/L against a permitted limit of 33 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
150% over limit
Discharged 25 mg/L against a permitted limit of 10 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
60% over limit
Discharged 16 mg/L against a permitted limit of 10 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
79% over limit
Discharged 14.5 mg/L against a permitted limit of 8.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Nitrogen, ammonia total [as N]
40% over limit
Discharged 14 mg/L against a permitted limit of 10 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
62% over limit
Discharged 13.1 mg/L against a permitted limit of 8.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, percent removal [total]
53% over limit
Discharged 77 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
November 30, 2025
Nitrogen, ammonia total [as N]
151% over limit
Discharged 20.3 mg/L against a permitted limit of 8.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
160% over limit
Discharged 26 mg/L against a permitted limit of 10 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Nitrogen, ammonia total [as N]
121% over limit
Discharged 17.9 mg/L against a permitted limit of 8.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
100% over limit
Discharged 20 mg/L against a permitted limit of 10 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
49% over limit
Discharged 12.1 mg/L against a permitted limit of 8.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
33% over limit
Discharged 80 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, percent removal [total]
67% over limit
Discharged 75 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
40% over limit
Discharged 14 mg/L against a permitted limit of 10 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Nitrogen, ammonia total [as N]
4% over limit
Discharged 8.4 mg/L against a permitted limit of 8.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.031 mg/L (MO AVG)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.033 mg/L (MAXIMUM)
DMR, Limited - Overdue
June 30, 2025
BOD, percent removal [total]
180% over limit
Discharged 58 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
160% over limit
Discharged 61 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
May 31, 2025
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.031 mg/L (MO AVG)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.033 mg/L (MAXIMUM)
DMR, Limited - Overdue
April 30, 2025
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.031 mg/L (MO AVG)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.031 mg/L (MO AVG)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.033 mg/L (MAXIMUM)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.033 mg/L (MAXIMUM)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
7% over limit
Discharged 8.7 mg/L against a permitted limit of 8.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.033 mg/L (MAXIMUM)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.031 mg/L (MO AVG)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.031 mg/L (MO AVG)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.033 mg/L (MAXIMUM)
DMR, Limited - Overdue
BOD, percent removal [total]
107% over limit
Discharged 69 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
120% over limit
Discharged 67 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
February 28, 2025
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.031 mg/L (MO AVG)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.033 mg/L (MAXIMUM)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
2% over limit
Discharged 194 kg/d against a permitted limit of 190 kg/d (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.033 mg/L (MAXIMUM)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.031 mg/L (MO AVG)
DMR, Limited - Overdue
December 31, 2024
BOD, 5-day, 20 deg. C
5% over limit
Discharged 23 mg/L against a permitted limit of 22 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
40% over limit
Discharged 14 mg/L against a permitted limit of 10 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
43% over limit
Discharged 11.6 mg/L against a permitted limit of 8.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.033 mg/L (MAXIMUM)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.031 mg/L (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
9% over limit
Discharged 24 mg/L against a permitted limit of 22 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 8.1 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 10 mg/L (WKLY AVG)
DMR, Limited - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)