IOLA ISD WWTP
NPDES ID: TX0092363
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
April 30, 2026
Nitrogen, ammonia total [as N]
375% over limit
Discharged 71.3 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1683% over limit
Discharged 71.3 mg/L against a permitted limit of 4 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
165% over limit
Discharged 333.3 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
94% over limit
Discharged 29.1 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
628% over limit
Discharged 29.1 mg/L against a permitted limit of 4 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
87% over limit
Discharged 28.1 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
970% over limit
Discharged 1.11729399 kg/d against a permitted limit of 0.10442 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
603% over limit
Discharged 28.1 mg/L against a permitted limit of 4 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
November 30, 2025
Nitrogen, ammonia total [as N]
340% over limit
Discharged 17.6 mg/L against a permitted limit of 4 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
123% over limit
Discharged 0.233356 kg/d against a permitted limit of 0.10442 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
34% over limit
Discharged 26.8 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
Limit violation
Discharged 8 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
17% over limit
Discharged 17.6 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
Limit violation
Discharged 8 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
October 31, 2025
Nitrogen, ammonia total [as N]
120% over limit
Discharged 0.230178 kg/d against a permitted limit of 0.10442 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
100% over limit
Discharged 8 mg/L against a permitted limit of 4 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
August 31, 2025
Nitrogen, ammonia total [as N]
110% over limit
Discharged 8.4 mg/L against a permitted limit of 4 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
220% over limit
Discharged 0.334144 kg/d against a permitted limit of 0.10442 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
March 31, 2025
Nitrogen, ammonia total [as N]
164% over limit
Discharged 39.6 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1408% over limit
Discharged 1.57447199 kg/d against a permitted limit of 0.10442 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
890% over limit
Discharged 39.6 mg/L against a permitted limit of 4 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
February 28, 2025
Nitrogen, ammonia total [as N]
140% over limit
Discharged 9.6 mg/L against a permitted limit of 4 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
11% over limit
Discharged 0.116224 kg/d against a permitted limit of 0.10442 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
January 31, 2025
E. coli
162% over limit
Discharged 1046.2 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
E. coli
730% over limit
Discharged 1046.2 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
December 31, 2024
Nitrogen, ammonia total [as N]
448% over limit
Discharged 21.9 mg/L against a permitted limit of 4 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
734% over limit
Discharged 0.87077199 kg/d against a permitted limit of 0.10442 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
46% over limit
Discharged 21.9 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
November 30, 2024
Nitrogen, ammonia total [as N]
9% over limit
Discharged 16.4 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
352% over limit
Discharged 0.47216 kg/d against a permitted limit of 0.10442 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
310% over limit
Discharged 16.4 mg/L against a permitted limit of 4 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
October 31, 2024
Nitrogen, ammonia total [as N]
223% over limit
Discharged 0.337776 kg/d against a permitted limit of 0.10442 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
113% over limit
Discharged 8.5 mg/L against a permitted limit of 4 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)