CITY OF HILLSBORO WWTP
NPDES ID: TX0023108
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 4 effluent violations, 1 permit schedule violation.
Violations
June 30, 2026
Whole Effluent Toxicity [WET] - C. dubia
25% over limit
Discharged 75 % against a permitted limit of 100 % (7 DA MIN)
DMR, Limited - Numeric Violation
Whole Effluent Toxicity [WET] - C. dubia
6% over limit
Discharged 75 % against a permitted limit of 80 % (7 DA MIN)
DMR, Limited - Numeric Violation
Whole Effluent Toxicity [WET] - C. dubia
25% over limit
Discharged 75 % against a permitted limit of 100 % (MO AV MN)
DMR, Limited - Numeric Violation
Whole Effluent Toxicity [WET] - C. dubia
6% over limit
Discharged 75 % against a permitted limit of 80 % (MO AV MN)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, total suspended
15% over limit
Discharged 23 mg/L against a permitted limit of 20 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Copper, total [as Cu]
171% over limit
Discharged 0.187 mg/L against a permitted limit of 0.069 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (4 days ago)