DALLAS COUNTY HIGH SCHOOL
NPDES ID: AL0044342
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.
Violations
May 31, 2026
Nitrogen, ammonia total [as N]
12% over limit
Discharged 3.7 mg/L against a permitted limit of 3.3 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
42% over limit
Discharged 5.66 mg/L against a permitted limit of 4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
70% over limit
Discharged 10.2 mg/L against a permitted limit of 6 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
65% over limit
Discharged 9.87 mg/L against a permitted limit of 6 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
80% over limit
Discharged 7.19 mg/L against a permitted limit of 4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
81% over limit
Discharged 993 MPN/100mL against a permitted limit of 548 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (5 days ago)