PULASKI COUNTY SPECIAL SCHOOL DISTRICT - LAWSON ELEMENTARY SCHOOL TREATMENT FAC
NPDES ID: AR0044628
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: 3 effluent violations.
Violations
June 30, 2026
Copper, dissolved [as Cu]
15% over limit
Discharged 0.012 mg/L against a permitted limit of 0.01046 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, dissolved [as Cu]
37043% over limit
Discharged 0.5902 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Copper, dissolved [as Cu]
9900% over limit
Discharged 0.07718 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Copper, dissolved [as Cu]
45614% over limit
Discharged 0.72639999 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Copper, dissolved [as Cu]
11018% over limit
Discharged 0.085806 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Copper, dissolved [as Cu]
8% over limit
Discharged 0.0113 mg/L against a permitted limit of 0.01046 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Copper, dissolved [as Cu]
14% over limit
Discharged 0.001816 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2025
Coliform, fecal general
Limit violation
Discharged 2419 MPN/100mL against a permitted limit of 1000 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
Coliform, fecal general
Limit violation
Discharged 2419 MPN/100mL against a permitted limit of 2000 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
July 31, 2025
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0.09988 kg/d against a permitted limit of 0.5902 kg/d (DAILY MX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0.04086 kg/d against a permitted limit of 0.3632 kg/d (MO AVG)
DMR, Limited - Overdue
June 30, 2025
pH
0% over limit
Discharged 5.9 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
May 31, 2025
pH
0% over limit
Discharged 5.9 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
April 30, 2025
Nitrogen, ammonia total [as N]
Limit violation
Discharged 5.9 mg/L against a permitted limit of 5.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
Limit violation
Discharged 5.9 mg/L against a permitted limit of 5.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 5.9 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
March 31, 2025
Solids, total suspended
103% over limit
Discharged 60.9 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
13% over limit
Discharged 1.69795999 kg/d against a permitted limit of 1.4982 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
274% over limit
Discharged 74.8 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
205% over limit
Discharged 60.9 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
12% over limit
Discharged 2.54693998 kg/d against a permitted limit of 2.27 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
149% over limit
Discharged 74.8 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2024
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.009 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Oil & Grease
0% over limit
Discharged 0.16344 kg/d against a permitted limit of 0.77179999 kg/d (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0.227 kg/d against a permitted limit of 2.27 kg/d (DAILY MX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.013 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 2 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.2 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0.1135 kg/d against a permitted limit of 2.27 kg/d (DAILY MX)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 2 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Overdue
Copper, dissolved [as Cu]
308135% over limit
Discharged 2.37895998 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Overdue
Copper, dissolved [as Cu]
308135% over limit
Discharged 2.37895998 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Copper, dissolved [as Cu]
249329% over limit
Discharged 3.96341997 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Overdue
Copper, dissolved [as Cu]
249329% over limit
Discharged 3.96341997 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal general
0% over limit
Discharged 920 MPN/100mL against a permitted limit of 1000 MPN/100mL (30DA GEO)
DMR, Limited - Overdue
Copper, dissolved [as Cu]
567% over limit
Discharged 0.0698 mg/L against a permitted limit of 0.01046 mg/L (MO AVG)
DMR, Limited - Overdue
Copper, dissolved [as Cu]
567% over limit
Discharged 0.0698 mg/L against a permitted limit of 0.01046 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, dissolved [as Cu]
233% over limit
Discharged 0.0698 mg/L against a permitted limit of 0.02098 mg/L (DAILY MX)
DMR, Limited - Overdue
Copper, dissolved [as Cu]
233% over limit
Discharged 0.0698 mg/L against a permitted limit of 0.02098 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
0% over limit
Discharged 4 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.2 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0.00681 kg/d against a permitted limit of 1.4982 kg/d (MO AVG)
DMR, Limited - Overdue
Coliform, fecal general
0% over limit
Discharged 920 MPN/100mL against a permitted limit of 2000 MPN/100mL (7 DA GEO)
DMR, Limited - Overdue
Oil & Grease
0% over limit
Discharged 4.85 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 7.9 mg/L against a permitted limit of 2 mg/L (INST MIN)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 4 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Overdue
Oil & Grease
0% over limit
Discharged 0.27694 kg/d against a permitted limit of 1.13499999 kg/d (DAILY MX)
DMR, Limited - Overdue
Oil & Grease
0% over limit
Discharged 4.85 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0.1362 kg/d against a permitted limit of 1.4982 kg/d (MO AVG)
DMR, Limited - Overdue
August 31, 2024
pH
0% over limit
Discharged 6.1 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.002 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 6.1 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.001 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 15, 2026 (9 hours ago)