PRASA SAN SEBASTIAN (NEW) WWTP
NPDES ID: PR0025551
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: 7 effluent violations.
Violations
June 30, 2026
Ammonia & ammonium- total
419% over limit
Discharged 0.42 mg/L against a permitted limit of 0.081 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
27% over limit
Discharged 144 kg/d against a permitted limit of 113 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
7% over limit
Discharged 84 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
29% over limit
Discharged 220 kg/d against a permitted limit of 170 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
May 31, 2026
Solids, total suspended
4% over limit
Discharged 118 kg/d against a permitted limit of 113 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
44% over limit
Discharged 244 kg/d against a permitted limit of 170 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Ammonia & ammonium- total
1419% over limit
Discharged 1.23 mg/L against a permitted limit of 0.081 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, total suspended
18% over limit
Discharged 201 kg/d against a permitted limit of 170 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Solids, total suspended
20% over limit
Discharged 204 kg/d against a permitted limit of 170 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
January 31, 2026
BOD, 5-day, 20 deg. C
12% over limit
Discharged 15 mg/L against a permitted limit of 13.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
33% over limit
Discharged 68 kg/d against a permitted limit of 51 kg/d (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
BOD, 5-day, 20 deg. C
12% over limit
Discharged 15 mg/L against a permitted limit of 13.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
27% over limit
Discharged 57 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
40% over limit
Discharged 79 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
August 31, 2025
BOD, 5-day, 20 deg. C
4% over limit
Discharged 53 kg/d against a permitted limit of 51 kg/d (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
BOD, 5-day, 20 deg. C
4% over limit
Discharged 14 mg/L against a permitted limit of 13.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
4% over limit
Discharged 53 kg/d against a permitted limit of 51 kg/d (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Solids, suspended percent removal
180% over limit
Discharged 58 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 15, 2026 (5 hours ago)