PRASA CUBUY WTP
NPDES ID: PR0022462
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: 5 effluent violations, 1 compliance schedule violation.
Violations
May 31, 2026
Phosphorus, total [as P]
9% over limit
Discharged 6.2900003 mg/L against a permitted limit of 5.76500027 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Turbidity
0% over limit
Discharged 140 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
1536% over limit
Discharged 0.18000001 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2026
Chlorine, total residual
4718% over limit
Discharged 0.53000003 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
Chlorine, total residual
5355% over limit
Discharged 0.60000003 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
5355% over limit
Discharged 0.60000003 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
5355% over limit
Discharged 0.60000003 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
5355% over limit
Discharged 0.60000003 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
5355% over limit
Discharged 0.60000003 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Turbidity
0% over limit
Discharged 240 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
3536% over limit
Discharged 0.40000002 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
3536% over limit
Discharged 0.40000002 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
3536% over limit
Discharged 0.40000002 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
3536% over limit
Discharged 0.40000002 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
3536% over limit
Discharged 0.40000002 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Chlorine, total residual
6264% over limit
Discharged 0.70000003 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
6264% over limit
Discharged 0.70000003 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
6264% over limit
Discharged 0.70000003 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
6264% over limit
Discharged 0.70000003 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
6264% over limit
Discharged 0.70000003 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Turbidity
0% over limit
Discharged 140 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Chlorine, total residual
7173% over limit
Discharged 0.80000004 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
7173% over limit
Discharged 0.80000004 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
7173% over limit
Discharged 0.80000004 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
7173% over limit
Discharged 0.80000004 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
7173% over limit
Discharged 0.80000004 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2025
Phosphorus, total [as P]
64% over limit
Discharged 9.44000045 mg/L against a permitted limit of 5.76500027 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total [as Pb]
145% over limit
Discharged 0.00515 mg/L against a permitted limit of 0.0021 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
7173% over limit
Discharged 0.80000004 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Turbidity
0% over limit
Discharged 1200 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2025
Chlorine, total residual
6264% over limit
Discharged 0.70000003 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
20% over limit
Discharged 6.92000033 mg/L against a permitted limit of 5.76500027 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total [as Pb]
20% over limit
Discharged 0.00252 mg/L against a permitted limit of 0.0021 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Turbidity
0% over limit
Discharged 310 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2025
Turbidity
0% over limit
Discharged 75 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
718% over limit
Discharged 0.09 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
Turbidity
0% over limit
Discharged 80 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
1082% over limit
Discharged 0.13000001 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2025
Chlorine, total residual
173% over limit
Discharged 0.03 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Turbidity
0% over limit
Discharged 170 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total [as Pb]
57% over limit
Discharged 0.00329 mg/L against a permitted limit of 0.0021 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
June 30, 2025
Chlorine, total residual
1173% over limit
Discharged 0.14000001 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Turbidity
0% over limit
Discharged 90 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2025
Chlorine, total residual
1355% over limit
Discharged 0.16000001 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
27% over limit
Discharged 7.34000035 mg/L against a permitted limit of 5.76500027 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total [as Pb]
40% over limit
Discharged 0.00293 mg/L against a permitted limit of 0.0021 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Turbidity
0% over limit
Discharged 550 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
Chlorine, total residual
2627% over limit
Discharged 0.30000001 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Turbidity
0% over limit
Discharged 230 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
Chlorine, total residual
2173% over limit
Discharged 0.25000001 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2025
Chlorine, total residual
1718% over limit
Discharged 0.20000001 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2025
Chlorine, total residual
809% over limit
Discharged 0.1 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Turbidity
0% over limit
Discharged 190 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
Chlorine, total residual
1173% over limit
Discharged 0.14000001 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
Chlorine, total residual
991% over limit
Discharged 0.12000001 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2024
Phosphorus, total [as P]
71% over limit
Discharged 9.87000047 mg/L against a permitted limit of 5.76500027 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total [as Pb]
48% over limit
Discharged 0.0031 mg/L against a permitted limit of 0.0021 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Turbidity
0% over limit
Discharged 500 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
1536% over limit
Discharged 0.18000001 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2024
Turbidity
0% over limit
Discharged 230 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
1718% over limit
Discharged 0.20000001 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2024
Chlorine, total residual
1809% over limit
Discharged 0.21000001 mg/L against a permitted limit of 0.011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (4 days ago)