UNION PARISH LANDFILL
NPDES ID: LA0068152
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
Violations
June 30, 2025
Solids, total suspended
4% over limit
Discharged 28 mg/L against a permitted limit of 27 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2025
BOD, 5-day, 20 deg. C
8% over limit
Discharged 40 mg/L against a permitted limit of 37 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
56% over limit
Discharged 42 mg/L against a permitted limit of 27 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Whole Effluent Toxicity [WET] - C. dubia
3% over limit
Discharged 96 % against a permitted limit of 99 % (7 DA MIN)
DMR, Limited - Numeric Violation
Whole Effluent Toxicity [WET] - P. promelas
27% over limit
Discharged 72 % against a permitted limit of 99 % (7 DA MIN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
88% over limit
Discharged 18.8 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chloride [as Cl]
40% over limit
Discharged 351 mg/L against a permitted limit of 250 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
284% over limit
Discharged 18.8 mg/L against a permitted limit of 4.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Whole Effluent Toxicity [WET] - C. dubia
3% over limit
Discharged 96 % against a permitted limit of 99 % (MO AV MN)
DMR, Limited - Numeric Violation
Whole Effluent Toxicity [WET] - P. promelas
27% over limit
Discharged 72 % against a permitted limit of 99 % (MO AV MN)
DMR, Limited - Numeric Violation
Carbon, tot organic [TOC]
65% over limit
Discharged 82.5 mg/L against a permitted limit of 50 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2024
Nitrogen, total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
July 31, 2024
Carbon, tot organic [TOC]
16% over limit
Discharged 58.2 mg/L against a permitted limit of 50 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
33% over limit
Discharged 6.52 mg/L against a permitted limit of 4.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)