PRASA CIALES WWTP
NPDES ID: PR0020427
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: 1 effluent violation, 5 single-event violations.
Violations
June 30, 2026
Ammonia & ammonium- total
66% over limit
Discharged 4.99 mg/L against a permitted limit of 3 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2025
Enterococci
25% over limit
Discharged 162.5 MPN/100mL against a permitted limit of 130 MPN/100mL (90TH %)
DMR, Limited - Numeric Violation
September 30, 2025
Enterococci
23% over limit
Discharged 43 MPN/100mL against a permitted limit of 35 MPN/100mL (GEO MEAN)
DMR, Limited - Numeric Violation
August 31, 2025
Enterococci
26% over limit
Discharged 44 MPN/100mL against a permitted limit of 35 MPN/100mL (GEO MEAN)
DMR, Limited - Numeric Violation
Enterococci
25% over limit
Discharged 162.5 MPN/100mL against a permitted limit of 130 MPN/100mL (90TH %)
DMR, Limited - Numeric Violation
June 30, 2025
Ammonia & ammonium- total
299% over limit
Discharged 11.98 mg/L against a permitted limit of 3 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2025
Phosphorus, total [as P]
12% over limit
Discharged 2.24000011 mg/L against a permitted limit of 2.00000009 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 15, 2026 (5 hours ago)