HOWARD INDUSTRIES, ELLISVILLE MANUFACTURING FACILITY
NPDES ID: MSP092017
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
Violations
March 31, 2026
Copper, total recoverable
119% over limit
Discharged 7.4 mg/L against a permitted limit of 3.38 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
79% over limit
Discharged 0.02666342 kg/d against a permitted limit of 0.0148912 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
119% over limit
Discharged 0.05323604 kg/d against a permitted limit of 0.024289 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Zinc, total recoverable
263% over limit
Discharged 0.06819988 kg/d against a permitted limit of 0.0187956 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Zinc, total recoverable
220% over limit
Discharged 4.74 mg/L against a permitted limit of 1.48 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Zinc, total recoverable
221% over limit
Discharged 0.03409994 kg/d against a permitted limit of 0.0106236 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Zinc, total recoverable
263% over limit
Discharged 9.48 mg/L against a permitted limit of 2.61 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
79% over limit
Discharged 3.7065 mg/L against a permitted limit of 2.07 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Copper, total recoverable
29% over limit
Discharged 4.36 mg/L against a permitted limit of 3.38 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
4% over limit
Discharged 0.01554042 kg/d against a permitted limit of 0.0148912 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
31% over limit
Discharged 2.705 mg/L against a permitted limit of 2.07 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Zinc, total recoverable
0% over limit
Discharged 1.487 mg/L against a permitted limit of 1.48 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Zinc, total recoverable
12% over limit
Discharged 1.66 mg/L against a permitted limit of 1.48 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Copper, total recoverable
12% over limit
Discharged 2.321 mg/L against a permitted limit of 2.07 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Zinc, total recoverable
49% over limit
Discharged 3.89 mg/L against a permitted limit of 2.61 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
30% over limit
Discharged 4.41 mg/L against a permitted limit of 3.38 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Zinc, total recoverable
46% over limit
Discharged 2.1575 mg/L against a permitted limit of 1.48 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Zinc, total recoverable
65% over limit
Discharged 0.03100638 kg/d against a permitted limit of 0.0187956 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Zinc, total recoverable
60% over limit
Discharged 2.3625 mg/L against a permitted limit of 1.48 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
1% over limit
Discharged 3.41 mg/L against a permitted limit of 3.38 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
1% over limit
Discharged 0.02452962 kg/d against a permitted limit of 0.024289 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Zinc, total recoverable
60% over limit
Discharged 0.01699594 kg/d against a permitted limit of 0.0106236 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
6% over limit
Discharged 2.184 mg/L against a permitted limit of 2.07 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
6% over limit
Discharged 0.01571294 kg/d against a permitted limit of 0.0148912 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Zinc, total recoverable
65% over limit
Discharged 4.31 mg/L against a permitted limit of 2.61 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
Zinc, total recoverable
8% over limit
Discharged 0.02035918 kg/d against a permitted limit of 0.0187956 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Zinc, total recoverable
8% over limit
Discharged 2.83 mg/L against a permitted limit of 2.61 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (4 days ago)