PUERTO RICO ELECTRIC PWR AUTH
NPDES ID: PR0000698
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: 2 effluent violations.
Violations
May 31, 2026
Copper, total [as Cu]
253% over limit
Discharged 0.01318 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2026
Copper, total [as Cu]
220% over limit
Discharged 0.01194 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
Copper, total [as Cu]
14% over limit
Discharged 0.00425 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
70% over limit
Discharged 0.00634 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Temperature, water deg. centigrade
66% over limit
Discharged 16.6 deg C against a permitted limit of 10 deg C (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2025
Nickel, total [as Ni]
97% over limit
Discharged 0.01634 mg/L against a permitted limit of 0.00828 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Flow, Excluding Stormwater Discharge
8% over limit
Discharged 0.96 MGD against a permitted limit of 0.89 MGD (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2025
Copper, total [as Cu]
157% over limit
Discharged 0.00957 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total [as Ni]
606% over limit
Discharged 0.05845 mg/L against a permitted limit of 0.00828 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2025
Temperature, water deg. centigrade
11% over limit
Discharged 11.1 deg C against a permitted limit of 10 deg C (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
Copper, total [as Cu]
20% over limit
Discharged 0.00448 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Temperature, water deg. centigrade
21% over limit
Discharged 38.9 deg C against a permitted limit of 32.2 deg C (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2025
Temperature, water deg. centigrade
19% over limit
Discharged 11.9 deg C against a permitted limit of 10 deg C (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
137% over limit
Discharged 0.00885 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total [as Ni]
48% over limit
Discharged 0.01229 mg/L against a permitted limit of 0.00828 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Temperature, water deg. centigrade
7% over limit
Discharged 34.4 deg C against a permitted limit of 32.2 deg C (DAILY MX)
DMR, Limited - Numeric Violation
June 30, 2025
Copper, total [as Cu]
201% over limit
Discharged 0.01123 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
100% over limit
Discharged 0.00745 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total [as Ni]
62% over limit
Discharged 0.01341 mg/L against a permitted limit of 0.00828 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2025
Copper, total [as Cu]
47% over limit
Discharged 0.00548 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Zinc, total [as Zn]
7% over limit
Discharged 0.09161 mg/L against a permitted limit of 0.08562 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Flow, Excluding Stormwater Discharge
24% over limit
Discharged 0.63 MGD against a permitted limit of 0.51 MGD (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
Flow, Excluding Stormwater Discharge
49% over limit
Discharged 0.76 MGD against a permitted limit of 0.51 MGD (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2025
Copper, total [as Cu]
81% over limit
Discharged 0.00676 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Zinc, total [as Zn]
176% over limit
Discharged 0.23600001 mg/L against a permitted limit of 0.08562 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2025
Copper, total [as Cu]
157% over limit
Discharged 0.00957 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
27% over limit
Discharged 38 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total [as Ni]
335% over limit
Discharged 0.036 mg/L against a permitted limit of 0.00828 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Temperature, water deg. centigrade
72% over limit
Discharged 17.2 deg C against a permitted limit of 10 deg C (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
Nickel, total [as Ni]
9% over limit
Discharged 0.009 mg/L against a permitted limit of 0.00828 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
80% over limit
Discharged 0.00672 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
Zinc, total [as Zn]
21% over limit
Discharged 0.104 mg/L against a permitted limit of 0.08562 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
25% over limit
Discharged 0.00467 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
124% over limit
Discharged 0.00836 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2024
Temperature, water deg. centigrade
5% over limit
Discharged 33.9 deg C against a permitted limit of 32.2 deg C (DAILY MX)
DMR, Limited - Numeric Violation
Flow, Excluding Stormwater Discharge
186% over limit
Discharged 1.46 MGD against a permitted limit of 0.51 MGD (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2024
Copper, total [as Cu]
56% over limit
Discharged 0.00583 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Flow, Excluding Stormwater Discharge
22% over limit
Discharged 0.62 MGD against a permitted limit of 0.51 MGD (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total [as Ni]
142% over limit
Discharged 0.02 mg/L against a permitted limit of 0.00828 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2024
Copper, total [as Cu]
89% over limit
Discharged 0.00704 mg/L against a permitted limit of 0.00373 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total [as Ni]
274% over limit
Discharged 0.031 mg/L against a permitted limit of 0.00828 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (4 days ago)