THORNTON WATER PROJECT SEGMENT C (NORTH REACH) - DW
NPDES ID: COG081274
X — SNC: Effluent violation (non-monthly average limit)
The facility discharged more of a pollutant than its permit allows, measured over a period other than a monthly average.
This quarter: 7 effluent violations.
Violations
May 31, 2026
Solids, total suspended
29% over limit
Discharged 38.67 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
87% over limit
Discharged 84 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
April 30, 2026
Solids, total suspended
164% over limit
Discharged 119 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
Solids, total suspended
36% over limit
Discharged 40.75 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
209% over limit
Discharged 139 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
Solids, total suspended
76% over limit
Discharged 52.67 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
2% over limit
Discharged 46 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
March 31, 2026
Oil and grease
1620% over limit
Discharged 172 mg/L against a permitted limit of 10 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
16% over limit
Discharged 52 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
Solids, total suspended
78% over limit
Discharged 80 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
Solids, total suspended
13% over limit
Discharged 33.75 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Solids, total suspended
170% over limit
Discharged 81 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
393% over limit
Discharged 222 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
December 31, 2025
Solids, total suspended
109% over limit
Discharged 94 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
Solids, total suspended
213% over limit
Discharged 94 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Solids, total suspended
3% over limit
Discharged 31 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
76% over limit
Discharged 79 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)