PUERTO RICO ELECTRIC PWR AUTH
NPDES ID: PR0001660
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
37% over limit
Discharged 41 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Temperature, water deg. centigrade
3% over limit
Discharged 33.3 deg C against a permitted limit of 32.2 deg C (DAILY MX)
DMR, Limited - Numeric Violation
Turbidity
0% over limit
Discharged 18 NTU against a permitted limit of 10 NTU (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
482% over limit
Discharged 0.02169 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Turbidity
0% over limit
Discharged 24 NTU against a permitted limit of 10 NTU (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2026
pH
0% over limit
Discharged 6.7 SU against a permitted limit of 7.3 SU (MINIMUM)
DMR, Limited - Numeric Violation
Temperature, water deg. centigrade
2% over limit
Discharged 33 deg C against a permitted limit of 32.2 deg C (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
464% over limit
Discharged 0.02104 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
Copper, total [as Cu]
563% over limit
Discharged 0.02472 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
563% over limit
Discharged 0.02472 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
563% over limit
Discharged 0.02472 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
563% over limit
Discharged 0.02472 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
563% over limit
Discharged 0.02472 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Copper, total [as Cu]
573% over limit
Discharged 0.02512 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
573% over limit
Discharged 0.02512 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
573% over limit
Discharged 0.02512 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
573% over limit
Discharged 0.02512 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
573% over limit
Discharged 0.02512 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Copper, total [as Cu]
1504% over limit
Discharged 0.05984 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
1504% over limit
Discharged 0.05984 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
1504% over limit
Discharged 0.05984 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
1504% over limit
Discharged 0.05984 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
1504% over limit
Discharged 0.05984 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Copper, total [as Cu]
808% over limit
Discharged 0.03388 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
808% over limit
Discharged 0.03388 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
808% over limit
Discharged 0.03388 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
808% over limit
Discharged 0.03388 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
808% over limit
Discharged 0.03388 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2025
Copper, total [as Cu]
109% over limit
Discharged 0.00781 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2025
Copper, total [as Cu]
627% over limit
Discharged 0.02711 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2025
Copper, total [as Cu]
147% over limit
Discharged 0.00921 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total [as Ni]
89% over limit
Discharged 0.0156 mg/L against a permitted limit of 0.00826 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
Solids, total suspended
7% over limit
Discharged 32 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
July 31, 2025
Copper, total [as Cu]
200% over limit
Discharged 0.0112 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
June 30, 2025
Copper, total [as Cu]
193% over limit
Discharged 0.01092 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2025
Copper, total [as Cu]
61% over limit
Discharged 0.006 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
Copper, total [as Cu]
220% over limit
Discharged 0.01193 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 8.7 SU against a permitted limit of 8.5 SU (MAXIMUM)
DMR, Limited - Numeric Violation
February 28, 2025
Copper, total [as Cu]
223% over limit
Discharged 0.01206 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
Copper, total [as Cu]
240% over limit
Discharged 0.01269 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
Copper, total [as Cu]
304% over limit
Discharged 0.01507 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2024
Copper, total [as Cu]
1345% over limit
Discharged 0.05391 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2024
Copper, total [as Cu]
113% over limit
Discharged 0.00794 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Temperature, water deg. centigrade
24% over limit
Discharged 39.8 deg C against a permitted limit of 32.2 deg C (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total [as Ni]
94% over limit
Discharged 0.016 mg/L against a permitted limit of 0.00826 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2024
Temperature, water deg. centigrade
7% over limit
Discharged 34.6 deg C against a permitted limit of 32.2 deg C (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
348% over limit
Discharged 0.01671 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (5 days ago)