ALEXANDER DAWSON SCHOOL
NPDES ID: COX631005
X — SNC: Effluent violation (non-monthly average limit)
The facility discharged more of a pollutant than its permit allows, measured over a period other than a monthly average.
This quarter: 8 effluent violations.
Violations
May 31, 2026
Solids, total suspended
31% over limit
Discharged 59 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
Nitrogen, inorganic total
498% over limit
Discharged 59.8 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
567% over limit
Discharged 0 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
97% over limit
Discharged 59 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Solids, suspended percent removal
67% over limit
Discharged 75 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Coliform, total general
357% over limit
Discharged 105 MPN/100mL against a permitted limit of 23 MPN/100mL (MAXIMUM)
DMR, Limited - Numeric Violation
Coliform, total general
4673% over limit
Discharged 105 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, inorganic total
223% over limit
Discharged 32.3 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
Coliform, total general
6523% over limit
Discharged 145.7 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
Coliform, total general
3448% over limit
Discharged 816 MPN/100mL against a permitted limit of 23 MPN/100mL (MAXIMUM)
DMR, Limited - Numeric Violation
Nitrogen, inorganic total
325% over limit
Discharged 42.5 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Chloride [as Cl]
372% over limit
Discharged 1180 mg/L against a permitted limit of 250 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, inorganic total
15% over limit
Discharged 11.5 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total dissolved
521% over limit
Discharged 7705 mg/L against a permitted limit of 1240 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Coliform, total general
632% over limit
Discharged 16.1 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
Coliform, total general
1030% over limit
Discharged 260 MPN/100mL against a permitted limit of 23 MPN/100mL (MAXIMUM)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)