A SCHULMAN
NPDES ID: TX0111350
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
Violations
February 28, 2026
Zinc, total [as Zn]
39% over limit
Discharged 0.217 mg/L against a permitted limit of 0.156 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Zinc, total [as Zn]
48% over limit
Discharged 0.1078 mg/L against a permitted limit of 0.073 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
January 31, 2026
Zinc, total [as Zn]
51% over limit
Discharged 0.1099 mg/L against a permitted limit of 0.073 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Zinc, total [as Zn]
26% over limit
Discharged 0.197 mg/L against a permitted limit of 0.156 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Zinc, total [as Zn]
1% over limit
Discharged 0.0738 mg/L against a permitted limit of 0.073 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Zinc, total [as Zn]
36% over limit
Discharged 0.135065 kg/d against a permitted limit of 0.098972 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2025
BOD, 5-day, 20 deg. C
32% over limit
Discharged 10.21499991 kg/d against a permitted limit of 7.76339993 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
Zinc, total [as Zn]
27% over limit
Discharged 0.093 mg/L against a permitted limit of 0.073 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
March 31, 2025
Zinc, total [as Zn]
127% over limit
Discharged 0.166 mg/L against a permitted limit of 0.073 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Zinc, total [as Zn]
33% over limit
Discharged 0.207 mg/L against a permitted limit of 0.156 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2025
Zinc, total [as Zn]
101% over limit
Discharged 0.314 mg/L against a permitted limit of 0.156 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Zinc, total [as Zn]
259% over limit
Discharged 0.262 mg/L against a permitted limit of 0.073 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Zinc, total [as Zn]
114% over limit
Discharged 0.101242 kg/d against a permitted limit of 0.047216 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Zinc, total [as Zn]
39% over limit
Discharged 0.138016 kg/d against a permitted limit of 0.098972 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2025
Zinc, total [as Zn]
147% over limit
Discharged 0.386 mg/L against a permitted limit of 0.156 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Zinc, total [as Zn]
192% over limit
Discharged 0.213 mg/L against a permitted limit of 0.073 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Zinc, total [as Zn]
84% over limit
Discharged 0.182508 kg/d against a permitted limit of 0.098972 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Zinc, total [as Zn]
63% over limit
Discharged 0.076726 kg/d against a permitted limit of 0.047216 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
December 31, 2024
Zinc, total [as Zn]
24% over limit
Discharged 0.0902 mg/L against a permitted limit of 0.073 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
November 30, 2024
Zinc, total [as Zn]
30% over limit
Discharged 0.128709 kg/d against a permitted limit of 0.098972 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2024
BOD, 5-day, 20 deg. C
319% over limit
Discharged 32.50639973 kg/d against a permitted limit of 7.76339993 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
241% over limit
Discharged 11.02311991 kg/d against a permitted limit of 3.23701997 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)