COLERIDGE WASTEWATER TREATMENT FACILITY
NPDES ID: NE0025429
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
Violations
March 31, 2026
Nitrogen, ammonia total [as N]
192% over limit
Discharged 3.04 kg/d against a permitted limit of 1.04 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
44% over limit
Discharged 28.6 mg/L against a permitted limit of 19.81 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
334% over limit
Discharged 28.6 mg/L against a permitted limit of 6.59 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
1236% over limit
Discharged 5.21 kg/d against a permitted limit of 0.39 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
433% over limit
Discharged 37.2 mg/L against a permitted limit of 6.98 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
31% over limit
Discharged 59 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1599% over limit
Discharged 37.2 mg/L against a permitted limit of 2.19 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
46% over limit
Discharged 8.27 kg/d against a permitted limit of 5.68 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
97% over limit
Discharged 59 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
320% over limit
Discharged 5.21 kg/d against a permitted limit of 1.24 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Solids, total suspended
37% over limit
Discharged 41 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
9% over limit
Discharged 6.2 kg/d against a permitted limit of 5.68 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
467% over limit
Discharged 39.6 mg/L against a permitted limit of 6.98 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
384% over limit
Discharged 6 kg/d against a permitted limit of 1.24 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1708% over limit
Discharged 39.6 mg/L against a permitted limit of 2.19 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1438% over limit
Discharged 6 kg/d against a permitted limit of 0.39 kg/d (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Nitrogen, ammonia total [as N]
14% over limit
Discharged 2.5 mg/L against a permitted limit of 2.19 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Solids, total suspended
407% over limit
Discharged 152 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
238% over limit
Discharged 152 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
13% over limit
Discharged 28.3 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
244% over limit
Discharged 19.56 kg/d against a permitted limit of 5.68 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
130% over limit
Discharged 19.56 kg/d against a permitted limit of 8.52 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Solids, total suspended
1% over limit
Discharged 5.75 kg/d against a permitted limit of 5.68 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
27% over limit
Discharged 38 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Solids, total suspended
10% over limit
Discharged 9.39 kg/d against a permitted limit of 8.52 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
65% over limit
Discharged 9.39 kg/d against a permitted limit of 5.68 kg/d (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Solids, total suspended
27% over limit
Discharged 57 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
72% over limit
Discharged 14.67 kg/d against a permitted limit of 8.52 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
158% over limit
Discharged 14.67 kg/d against a permitted limit of 5.68 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
90% over limit
Discharged 57 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (5 days ago)