PMP CORPORATION
NPDES ID: CTP000584
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
Oil petroleum, total recoverable
3229% over limit
Discharged 2497 mg/L against a permitted limit of 75 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oil petroleum, total recoverable
3514% over limit
Discharged 3614 mg/L against a permitted limit of 100 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, total suspended
82% over limit
Discharged 91 mg/L against a permitted limit of 50 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
21% over limit
Discharged 91 mg/L against a permitted limit of 75 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Oil petroleum, total recoverable
144% over limit
Discharged 244 mg/L against a permitted limit of 100 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
26% over limit
Discharged 1.26 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oil petroleum, total recoverable
110% over limit
Discharged 157.8 mg/L against a permitted limit of 75 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Nickel, total [as Ni]
1% over limit
Discharged 1.01 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Copper, total [as Cu]
7% over limit
Discharged 1.07 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Nickel, total [as Ni]
13% over limit
Discharged 1.13 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oil petroleum, total recoverable
132% over limit
Discharged 174 mg/L against a permitted limit of 75 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oil petroleum, total recoverable
106% over limit
Discharged 206 mg/L against a permitted limit of 100 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
47% over limit
Discharged 1.47 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Oil petroleum, total recoverable
25% over limit
Discharged 93.8 mg/L against a permitted limit of 75 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Solids, total suspended
60% over limit
Discharged 120 mg/L against a permitted limit of 75 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
140% over limit
Discharged 120 mg/L against a permitted limit of 50 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total [as Ni]
21% over limit
Discharged 1.21 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Nickel, total [as Ni]
17% over limit
Discharged 1.17 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Oil petroleum, total recoverable
0% over limit
Discharged 99.6 mg/L against a permitted limit of 100 mg/L (DAILY MX)
DMR, Limited - Overdue
Oil petroleum, total recoverable
33% over limit
Discharged 99.6 mg/L against a permitted limit of 75 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
130% over limit
Discharged 2.3 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
15% over limit
Discharged 2.3 mg/L against a permitted limit of 2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
Copper, total [as Cu]
1% over limit
Discharged 1.01 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oil petroleum, total recoverable
0% over limit
Discharged 49.6 mg/L against a permitted limit of 100 mg/L (DAILY MX)
DMR, Limited - Overdue
October 31, 2024
Oil petroleum, total recoverable
0% over limit
Discharged 16.4 mg/L against a permitted limit of 100 mg/L (DAILY MX)
DMR, Limited - Overdue
Oil petroleum, total recoverable
0% over limit
Discharged 16.4 mg/L against a permitted limit of 75 mg/L (MO AVG)
DMR, Limited - Overdue
Flow, maximum during 24 hr period
0% over limit
Discharged 0.000308 MGD against a permitted limit of 0.002 MGD (DAILY MX)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 75 mg/L (DAILY MX)
DMR, Limited - Overdue
pH, maximum
0% over limit
Discharged 9 SU against a permitted limit of 10 SU (INST MAX)
DMR, Limited - Overdue
Flow rate
0% over limit
Discharged 0.000499 MGD against a permitted limit of 0.0018 MGD (MO AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 9 SU against a permitted limit of 10 SU (INST MAX)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 50 mg/L (MO AVG)
DMR, Limited - Overdue
September 30, 2024
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 50 mg/L (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 75 mg/L (DAILY MX)
DMR, Limited - Overdue
August 31, 2024
Zinc, total [as Zn]
204% over limit
Discharged 3.04 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Zinc, total [as Zn]
52% over limit
Discharged 3.04 mg/L against a permitted limit of 2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 15, 2026 (7 hours ago)