GRETNA TOWN - SEWAGE TREATMENT PLANT
NPDES ID: VA0063843
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: 2 effluent violations, 4 permit schedule violations.
Violations
April 30, 2026
Nitrogen, ammonia total [as N]
113% over limit
Discharged 21.7 mg/L against a permitted limit of 10.2 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
124% over limit
Discharged 15.7 mg/L against a permitted limit of 7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
27% over limit
Discharged 13 mg/L against a permitted limit of 10.2 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
60% over limit
Discharged 11.2 mg/L against a permitted limit of 7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
154% over limit
Discharged 25.9 mg/L against a permitted limit of 10.2 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
100% over limit
Discharged 14 mg/L against a permitted limit of 7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
139% over limit
Discharged 24.4 mg/L against a permitted limit of 10.2 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
149% over limit
Discharged 17.4 mg/L against a permitted limit of 7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Nitrogen, ammonia total [as N]
51% over limit
Discharged 10.6 mg/L against a permitted limit of 7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
85% over limit
Discharged 18.9 mg/L against a permitted limit of 10.2 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
November 30, 2025
Nitrogen, ammonia total [as N]
47% over limit
Discharged 10.3 mg/L against a permitted limit of 7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
79% over limit
Discharged 18.3 mg/L against a permitted limit of 10.2 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
April 30, 2025
Nitrogen, ammonia total [as N]
19% over limit
Discharged 8.3 mg/L against a permitted limit of 7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
2% over limit
Discharged 10.4 mg/L against a permitted limit of 10.2 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
March 31, 2025
Nitrogen, ammonia total [as N]
31% over limit
Discharged 9.2 mg/L against a permitted limit of 7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
92% over limit
Discharged 19.6 mg/L against a permitted limit of 10.2 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
February 28, 2025
Nitrogen, ammonia total [as N]
43% over limit
Discharged 10 mg/L against a permitted limit of 7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
21% over limit
Discharged 12.3 mg/L against a permitted limit of 10.2 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
January 31, 2025
Nitrogen, ammonia total [as N]
56% over limit
Discharged 10.9 mg/L against a permitted limit of 7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
59% over limit
Discharged 16.2 mg/L against a permitted limit of 10.2 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)