LAKE LEHMAN SCHOOL DIST
NPDES ID: PA0035009
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: 2 effluent violations.
Violations
May 31, 2026
Nitrogen, ammonia total [as N]
204% over limit
Discharged 7.6 mg/L against a permitted limit of 2.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
128% over limit
Discharged 17.1 mg/L against a permitted limit of 7.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
11% over limit
Discharged 8.3 mg/L against a permitted limit of 7.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Nitrogen, ammonia total [as N]
136% over limit
Discharged 5.9 mg/L against a permitted limit of 2.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
396% over limit
Discharged 12.4 mg/L against a permitted limit of 2.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Nitrogen, ammonia total [as N]
5% over limit
Discharged 7.9 mg/L against a permitted limit of 7.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Coliform, fecal general
142% over limit
Discharged 24196 MPN/100mL against a permitted limit of 10000 MPN/100mL (INST MAX)
DMR, Limited - Numeric Violation
October 31, 2024
Nitrogen, ammonia total [as N]
176% over limit
Discharged 6.9 mg/L against a permitted limit of 2.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 15, 2026 (3 hours ago)