HATTIESBURG NORTH LAGOON
NPDES ID: MS0020826
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 effluent violation, 1 single-event violation.
Violations
April 30, 2026
Solids, total suspended
47% over limit
Discharged 44 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
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
E. coli
490% over limit
Discharged 2420 MPN/100mL against a permitted limit of 410 MPN/100mL (MX WK AV)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
62% over limit
Discharged 61.2 % against a permitted limit of 76 % (MINIMUM)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
87% over limit
Discharged 62.7 % against a permitted limit of 80 % (MINIMUM)
DMR, Limited - Numeric Violation
November 30, 2025
BOD, 5-day, percent removal
72% over limit
Discharged 65.7 % against a permitted limit of 80 % (MINIMUM)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
27% over limit
Discharged 38 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
20% over limit
Discharged 54 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
189% over limit
Discharged 30.6 % against a permitted limit of 76 % (MINIMUM)
DMR, Limited - Numeric Violation
Solids, total suspended
63% over limit
Discharged 49 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Solids, total suspended
36% over limit
Discharged 61 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
140% over limit
Discharged 42.5 % against a permitted limit of 76 % (MINIMUM)
DMR, Limited - Numeric Violation
May 31, 2025
Solids, suspended percent removal
6% over limit
Discharged 74.5 % against a permitted limit of 76 % (MINIMUM)
DMR, Limited - Numeric Violation
April 30, 2025
Solids, suspended percent removal
34% over limit
Discharged 67.9 % against a permitted limit of 76 % (MINIMUM)
DMR, Limited - Numeric Violation
E. coli
490% over limit
Discharged 2420 MPN/100mL against a permitted limit of 410 MPN/100mL (MX WK AV)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)