PRASA MIRADERO WTP
NPDES ID: PR0023990
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
Lead, total [as Pb]
652% over limit
Discharged 0.01805 mg/L against a permitted limit of 0.0024 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2026
Lead, total [as Pb]
641% over limit
Discharged 0.01779 mg/L against a permitted limit of 0.0024 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
Lead, total [as Pb]
2466% over limit
Discharged 0.06158 mg/L against a permitted limit of 0.0024 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total [as Pb]
2466% over limit
Discharged 0.06158 mg/L against a permitted limit of 0.0024 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total [as Pb]
2466% over limit
Discharged 0.06158 mg/L against a permitted limit of 0.0024 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total [as Pb]
2466% over limit
Discharged 0.06158 mg/L against a permitted limit of 0.0024 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total [as Pb]
2466% over limit
Discharged 0.06158 mg/L against a permitted limit of 0.0024 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Ammonia & ammonium- total
16% over limit
Discharged 0.29 mg/L against a permitted limit of 0.25 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Ammonia & ammonium- total
12% over limit
Discharged 0.28 mg/L against a permitted limit of 0.25 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
47% over limit
Discharged 23.5 mg/L against a permitted limit of 16 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2025
Lead, total [as Pb]
178% over limit
Discharged 0.00666 mg/L against a permitted limit of 0.0024 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
Lead, total [as Pb]
82% over limit
Discharged 0.00437 mg/L against a permitted limit of 0.0024 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
June 30, 2025
Lead, total [as Pb]
382% over limit
Discharged 0.01156 mg/L against a permitted limit of 0.0024 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2025
Lead, total [as Pb]
1599% over limit
Discharged 0.04077 mg/L against a permitted limit of 0.0024 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
Lead, total [as Pb]
979% over limit
Discharged 0.0259 mg/L against a permitted limit of 0.0024 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
Lead, total [as Pb]
280% over limit
Discharged 0.00912 mg/L against a permitted limit of 0.0024 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2025
Lead, total [as Pb]
380% over limit
Discharged 0.01151 mg/L against a permitted limit of 0.0024 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
Lead, total [as Pb]
268% over limit
Discharged 0.00882 mg/L against a permitted limit of 0.0024 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
Lead, total [as Pb]
1% over limit
Discharged 0.00243 mg/L against a permitted limit of 0.0024 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2024
Lead, total [as Pb]
3% over limit
Discharged 0.00246 mg/L against a permitted limit of 0.0024 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2024
Lead, total [as Pb]
152% over limit
Discharged 0.00604 mg/L against a permitted limit of 0.0024 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
550% over limit
Discharged 104 mg/L against a permitted limit of 16 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (5 days ago)