ARROWHEAD RANCH ESTATES WWTP
NPDES ID: TX0101818
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: 5 effluent violations.
Violations
May 31, 2026
Flow, in conduit or thru treatment plant
90% over limit
Discharged 0.056894 MGD against a permitted limit of 0.03 MGD (DAILY AV)
DMR, Limited - Numeric Violation
April 30, 2026
Flow, in conduit or thru treatment plant
207% over limit
Discharged 0.092231 MGD against a permitted limit of 0.03 MGD (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
84% over limit
Discharged 4.17225996 kg/d against a permitted limit of 2.27 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Chlorine, total residual
53% over limit
Discharged 6.1 mg/L against a permitted limit of 4 mg/L (MO MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
207% over limit
Discharged 6.95981994 kg/d against a permitted limit of 2.27 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
March 31, 2026
BOD, 5-day, 20 deg. C
35% over limit
Discharged 27 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
156% over limit
Discharged 0.076717 MGD against a permitted limit of 0.03 MGD (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
94% over limit
Discharged 4.40379996 kg/d against a permitted limit of 2.27 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
11% over limit
Discharged 22.1 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
180% over limit
Discharged 6.35599995 kg/d against a permitted limit of 2.27 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
February 28, 2026
pH
0% over limit
Discharged 5.8 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
Solids, total suspended
18% over limit
Discharged 23.6 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
January 31, 2026
Solids, total suspended
113% over limit
Discharged 4.83963996 kg/d against a permitted limit of 2.27 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
December 31, 2025
Solids, total suspended
3% over limit
Discharged 20.62 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
November 30, 2025
pH
0% over limit
Discharged 5.2 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
Solids, total suspended
48% over limit
Discharged 29.63 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
October 31, 2025
pH
0% over limit
Discharged 5.5 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
September 30, 2025
Chlorine, total residual
40% over limit
Discharged 0.6 mg/L against a permitted limit of 1 mg/L (MO MIN)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 5.8 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
April 30, 2025
pH
0% over limit
Discharged 9.1 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
March 31, 2025
pH
0% over limit
Discharged 9.1 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
November 30, 2024
Chlorine, total residual
10% over limit
Discharged 0.9 mg/L against a permitted limit of 1 mg/L (MO MIN)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)