DILLER WASTEWATER TREATMENT FACILITY
NPDES ID: NE0129500
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
Violations
February 28, 2026
Nitrogen, ammonia total [as N]
35938% over limit
Discharged 191 kg/d against a permitted limit of 0.53 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
3% over limit
Discharged 31 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
452% over limit
Discharged 5.24 mg/L against a permitted limit of 0.95 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
34325% over limit
Discharged 364.9 kg/d against a permitted limit of 1.06 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
424% over limit
Discharged 10 mg/L against a permitted limit of 1.91 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
424% over limit
Discharged 10 mg/L against a permitted limit of 1.91 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
34325% over limit
Discharged 364.9 kg/d against a permitted limit of 1.06 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
35938% over limit
Discharged 191 kg/d against a permitted limit of 0.53 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
452% over limit
Discharged 5.24 mg/L against a permitted limit of 0.95 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
3% over limit
Discharged 31 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Nitrogen, ammonia total [as N]
34325% over limit
Discharged 364.9 kg/d against a permitted limit of 1.06 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
35938% over limit
Discharged 191 kg/d against a permitted limit of 0.53 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
452% over limit
Discharged 5.24 mg/L against a permitted limit of 0.95 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
424% over limit
Discharged 10 mg/L against a permitted limit of 1.91 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2025
Nitrogen, ammonia total [as N]
34325% over limit
Discharged 364.9 kg/d against a permitted limit of 1.06 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
35938% over limit
Discharged 191 kg/d against a permitted limit of 0.53 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
452% over limit
Discharged 5.24 mg/L against a permitted limit of 0.95 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
424% over limit
Discharged 10 mg/L against a permitted limit of 1.91 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
Nitrogen, ammonia total [as N]
28108% over limit
Discharged 149.5 kg/d against a permitted limit of 0.53 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
8% over limit
Discharged 1.025 mg/L against a permitted limit of 0.95 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
14174% over limit
Discharged 151.3 kg/d against a permitted limit of 1.06 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
Nitrogen, ammonia total [as N]
14174% over limit
Discharged 151.3 kg/d against a permitted limit of 1.06 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
8% over limit
Discharged 1.025 mg/L against a permitted limit of 0.95 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
28108% over limit
Discharged 149.5 kg/d against a permitted limit of 0.53 kg/d (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (4 days ago)