RUSTON, CITY OF- NORTHSIDE WASTEWATER TREATMENT PLANT
NPDES ID: LA0036323
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: 1 compliance schedule violation, 1 single-event violation.
Violations
March 31, 2026
Sulfate, total [as SO4]
54% over limit
Discharged 387.49807674 kg/d against a permitted limit of 251.51599789 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved
49% over limit
Discharged 264 mg/L against a permitted limit of 177 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Sulfate, total [as SO4]
11% over limit
Discharged 28.75 mg/L against a permitted limit of 26 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Sulfate, total [as SO4]
161% over limit
Discharged 28.75 mg/L against a permitted limit of 11 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Solids, total dissolved
7019% over limit
Discharged 12600 mg/L against a permitted limit of 177 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved
2893% over limit
Discharged 12600 mg/L against a permitted limit of 421 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Sulfate, total [as SO4]
94% over limit
Discharged 21.3 mg/L against a permitted limit of 11 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved
3364% over limit
Discharged 139475.15482807 kg/d against a permitted limit of 4026.07196617 kg/d (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Sulfate, total [as SO4]
8% over limit
Discharged 270.94719772 kg/d against a permitted limit of 251.51599789 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved
72% over limit
Discharged 304 mg/L against a permitted limit of 177 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Sulfate, total [as SO4]
125% over limit
Discharged 24.8 mg/L against a permitted limit of 11 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Solids, total dissolved
13% over limit
Discharged 474 mg/L against a permitted limit of 421 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Sulfate, total [as SO4]
48% over limit
Discharged 372.46159687 kg/d against a permitted limit of 251.51599789 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Sulfate, total [as SO4]
130% over limit
Discharged 25.3 mg/L against a permitted limit of 11 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved
168% over limit
Discharged 474 mg/L against a permitted limit of 177 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved
73% over limit
Discharged 6977.97994137 kg/d against a permitted limit of 4026.07196617 kg/d (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Sulfate, total [as SO4]
77% over limit
Discharged 19.5 mg/L against a permitted limit of 11 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Sulfate, total [as SO4]
47% over limit
Discharged 369.1700969 kg/d against a permitted limit of 251.51599789 kg/d (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Sulfate, total [as SO4]
152% over limit
Discharged 27.7 mg/L against a permitted limit of 11 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Sulfate, total [as SO4]
7% over limit
Discharged 27.7 mg/L against a permitted limit of 26 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
71% over limit
Discharged 39.26 mg/L against a permitted limit of 23 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved
47% over limit
Discharged 5909.41377035 kg/d against a permitted limit of 4026.07196617 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
202% over limit
Discharged 0.69915999 kg/d against a permitted limit of 0.23154 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved
134% over limit
Discharged 414 mg/L against a permitted limit of 177 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
123% over limit
Discharged 1.22579999 kg/d against a permitted limit of 0.54934 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Sulfate, total [as SO4]
57% over limit
Discharged 394.62587668 kg/d against a permitted limit of 251.51599789 kg/d (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Solids, total dissolved
24% over limit
Discharged 5001.26395798 kg/d against a permitted limit of 4026.07196617 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Sulfate, total [as SO4]
53% over limit
Discharged 384.84671677 kg/d against a permitted limit of 251.51599789 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved
89% over limit
Discharged 334 mg/L against a permitted limit of 177 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Sulfate, total [as SO4]
134% over limit
Discharged 25.7 mg/L against a permitted limit of 11 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0.04 mg/L against a permitted limit of 4 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0.07 mg/L against a permitted limit of 8 mg/L (WKLY AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0.57204 kg/d against a permitted limit of 90.79999924 kg/d (MO AVG)
DMR, Limited - Overdue
July 31, 2024
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0.76725999 kg/d against a permitted limit of 90.79999924 kg/d (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0.15 mg/L against a permitted limit of 8 mg/L (WKLY AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0.07 mg/L against a permitted limit of 4 mg/L (MO AVG)
DMR, Limited - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)