PRASA CAYEY (FARALLON) WTP
NPDES ID: PR0026077
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: 4 effluent violations.
Violations
June 30, 2026
Copper, total [as Cu]
34% over limit
Discharged 0.10611001 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2026
BOD, 5-day, 20 deg. C
21% over limit
Discharged 6.06 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
348% over limit
Discharged 0.35399002 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2026
Copper, total [as Cu]
412% over limit
Discharged 0.40441002 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
412% over limit
Discharged 0.40441002 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
412% over limit
Discharged 0.40441002 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
412% over limit
Discharged 0.40441002 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
412% over limit
Discharged 0.40441002 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
Copper, total [as Cu]
47% over limit
Discharged 0.11611001 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
47% over limit
Discharged 0.11611001 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
47% over limit
Discharged 0.11611001 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
47% over limit
Discharged 0.11611001 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
47% over limit
Discharged 0.11611001 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Oxygen, dissolved [DO]
0% over limit
Discharged 7 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Overdue
Color [PT-CO units]
0% over limit
Discharged 10 col unit (pc) against a permitted limit of 15 col unit (pc) (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 3.36 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.659 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Ammonia & ammonium- total
0% over limit
Discharged 0.21000001 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Solids, settleable
0% over limit
Discharged 0.07 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Copper, total [as Cu]
28% over limit
Discharged 0.10128 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Overdue
Copper, total [as Cu]
28% over limit
Discharged 0.10128 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
28% over limit
Discharged 0.10128 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
28% over limit
Discharged 0.10128 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
28% over limit
Discharged 0.10128 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
28% over limit
Discharged 0.10128 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 8 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Temperature, water deg. centigrade
0% over limit
Discharged 24.4 deg C against a permitted limit of 32.2 deg C (DAILY MX)
DMR, Limited - Overdue
December 31, 2025
Copper, total [as Cu]
64% over limit
Discharged 0.12954001 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2025
Copper, total [as Cu]
385% over limit
Discharged 0.38295002 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2025
BOD, 5-day, 20 deg. C
94% over limit
Discharged 9.72 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
BOD, 5-day, 20 deg. C
156% over limit
Discharged 12.8 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
420% over limit
Discharged 0.41131002 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2025
Copper, total [as Cu]
134% over limit
Discharged 0.18506001 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
592% over limit
Discharged 34.6 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
Copper, total [as Cu]
68% over limit
Discharged 0.13252001 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
20% over limit
Discharged 6 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
BOD, 5-day, 20 deg. C
40% over limit
Discharged 7 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2025
Copper, total [as Cu]
33% over limit
Discharged 0.10517 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Color [PT-CO units]
0% over limit
Discharged 20 col unit (pc) against a permitted limit of 15 col unit (pc) (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2025
Copper, total [as Cu]
10% over limit
Discharged 0.08698 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Turbidity
0% over limit
Discharged 800 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
Copper, total [as Cu]
3556% over limit
Discharged 2.89000014 mg/L against a permitted limit of 0.07904 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
2440% over limit
Discharged 127 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2024
BOD, 5-day, 20 deg. C
40% over limit
Discharged 7 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 15, 2026 (5 hours ago)