ABRAXAS I
NPDES ID: PA0037117
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
This quarter: 3 effluent violations.
Violations
May 31, 2026
Solids, total suspended
25% over limit
Discharged 12.5 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
63% over limit
Discharged 12.2 mg/L against a permitted limit of 7.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1% over limit
Discharged 15.1 mg/L against a permitted limit of 15 mg/L (INST MAX)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
95% over limit
Discharged 14.65 mg/L against a permitted limit of 7.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
5% over limit
Discharged 15.8 mg/L against a permitted limit of 15 mg/L (INST MAX)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
20% over limit
Discharged 8.99 mg/L against a permitted limit of 7.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
13% over limit
Discharged 8.5 mg/L against a permitted limit of 7.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
E. coli
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 0 MPN/100mL (INST MAX)
DMR, Monitor Only - Overdue
Chlorine, total residual
45% over limit
Discharged 0.29 mg/L against a permitted limit of 0.2 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Chlorine, total residual
100% over limit
Discharged 0.14 mg/L against a permitted limit of 0.07 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Phosphorus, total [as P]
96% over limit
Discharged 1.96 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 10000 MPN/100mL (INST MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
70% over limit
Discharged 17 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
45% over limit
Discharged 29 mg/L against a permitted limit of 20 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
25% over limit
Discharged 2.5 mg/L against a permitted limit of 2 mg/L (INST MAX)
DMR, Limited - Numeric Violation
October 31, 2025
Phosphorus, total [as P]
46% over limit
Discharged 1.46 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Coliform, fecal general
113% over limit
Discharged 426 MPN/100mL against a permitted limit of 200 MPN/100mL (GEO MEAN)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.96 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
Coliform, fecal general
142% over limit
Discharged 2420 MPN/100mL against a permitted limit of 1000 MPN/100mL (INST MAX)
DMR, Limited - Numeric Violation
August 31, 2025
Coliform, fecal general
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 1000 MPN/100mL (INST MAX)
DMR, Limited - Numeric Violation
Coliform, fecal general
1110% over limit
Discharged 2419 MPN/100mL against a permitted limit of 200 MPN/100mL (GEO MEAN)
DMR, Limited - Numeric Violation
July 31, 2025
Oxygen, dissolved [DO]
17% over limit
Discharged 5.79 mg/L against a permitted limit of 7 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
June 30, 2025
Coliform, fecal general
1110% over limit
Discharged 2419 MPN/100mL against a permitted limit of 200 MPN/100mL (GEO MEAN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
340% over limit
Discharged 11 mg/L against a permitted limit of 2.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Nitrogen, ammonia total [as N]
31% over limit
Discharged 9.8 mg/L against a permitted limit of 7.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
130% over limit
Discharged 23 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
60% over limit
Discharged 1.6 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
14% over limit
Discharged 11.4 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Solids, total suspended
105% over limit
Discharged 20.5 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Phosphorus, total [as P]
0% over limit
Discharged 0.065 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0.02 mg/L against a permitted limit of 0.1 mg/L (MO AVG)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 10.2 mg/L against a permitted limit of 8 mg/L (DAILY MN)
DMR, Limited - Overdue
Coliform, fecal general
0% over limit
Discharged 1 MPN/100mL against a permitted limit of 2000 MPN/100mL (GEO MEAN)
DMR, Limited - Overdue
pH
0% over limit
Discharged 8.02 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.0023 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 1.2 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 3 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0.53 mg/L against a permitted limit of 7.5 mg/L (MO AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.3 SU against a permitted limit of 6 SU (INST MIN)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 3 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Overdue
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 16, 2026 (yesterday)