MACHADO CONSTRUCTION COMPANY,INC.
NPDES ID: MDG491376
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: 3 effluent violations.
Violations
June 30, 2026
pH
0% over limit
Discharged 10.2 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 10.2 SU against a permitted limit of 8.5 SU (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
pH
0% over limit
Discharged 8.82 SU against a permitted limit of 8.5 SU (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
pH
0% over limit
Discharged 9.56 SU against a permitted limit of 8.5 SU (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 500 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Oil and grease
3400% over limit
Discharged 525 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (5 days ago)