SCHLUMBERGER ROSHARON COMPLETIONS
NPDES ID: TX0078646
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: 1 effluent violation, 8 reporting violations.
Violations
May 31, 2026
Copper, total [as Cu]
2% over limit
Discharged 0.042 mg/L against a permitted limit of 0.041 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
April 30, 2026
Copper, total [as Cu]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.086 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 kg/d against a permitted limit of 1.81599998 kg/d (DAILY AV)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 kg/d against a permitted limit of 3.63199997 kg/d (DAILY MX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0.1428 MGD (DAILY MX)
DMR, Limited - Overdue
Copper, total [as Cu]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.041 mg/L (DAILY AV)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0.0408 MGD (DAILY AV)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
March 31, 2026
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 399 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Copper, total [as Cu]
90% over limit
Discharged 0.163 mg/L against a permitted limit of 0.086 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
161% over limit
Discharged 0.107 mg/L against a permitted limit of 0.041 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
November 30, 2025
Copper, total [as Cu]
127% over limit
Discharged 0.195 mg/L against a permitted limit of 0.086 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
190% over limit
Discharged 0.119 mg/L against a permitted limit of 0.041 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
November 30, 2024
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.01 MGD against a permitted limit of 0.1428 MGD (DAILY MX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 6.95 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.69 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.006 MGD against a permitted limit of 0.0408 MGD (DAILY AV)
DMR, Limited - Overdue
Copper, total [as Cu]
0% over limit
Discharged 0.0318 mg/L against a permitted limit of 0.086 mg/L (DAILY MX)
DMR, Limited - Overdue
Copper, total [as Cu]
0% over limit
Discharged 0.0318 mg/L against a permitted limit of 0.041 mg/L (DAILY AV)
DMR, Limited - Overdue
October 31, 2024
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 399 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2024
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.013 MGD against a permitted limit of 0.0408 MGD (DAILY AV)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0.0029056 kg/d against a permitted limit of 1.81599998 kg/d (DAILY AV)
DMR, Limited - Overdue
Copper, total [as Cu]
0% over limit
Discharged 0.03 mg/L against a permitted limit of 0.041 mg/L (DAILY AV)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.4 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Copper, total [as Cu]
0% over limit
Discharged 0.03 mg/L against a permitted limit of 0.086 mg/L (DAILY MX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.029 MGD against a permitted limit of 0.1428 MGD (DAILY MX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 8.25 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0.0048124 kg/d against a permitted limit of 3.63199997 kg/d (DAILY MX)
DMR, Limited - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)