LAS ANIMAS WWTF
NPDES ID: CO0040690
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 6 effluent violations.
Violations
May 31, 2026
Sulfate
104% over limit
Discharged 1842.06 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Uranium, total
117% over limit
Discharged 0.065 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
49% over limit
Discharged 38.7 mg/L against a permitted limit of 26 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
117% over limit
Discharged 39.1 mg/L against a permitted limit of 18 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Uranium, total
89% over limit
Discharged 0.0566 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Sulfate
126% over limit
Discharged 2035.45 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Sulfate
85% over limit
Discharged 1666.79 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Uranium, total
109% over limit
Discharged 0.0626 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
78% over limit
Discharged 37.4 mg/L against a permitted limit of 21 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Sulfate
143% over limit
Discharged 2195.84 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Uranium, total
84% over limit
Discharged 0.0551 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
53% over limit
Discharged 42.7 mg/L against a permitted limit of 28 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Sulfate
15% over limit
Discharged 1040.04 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Sulfate
127% over limit
Discharged 2051.91 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
39% over limit
Discharged 38.8 mg/L against a permitted limit of 28 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Uranium, total
55% over limit
Discharged 0.0465 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Uranium, total
90% over limit
Discharged 0.0571 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Sulfate
108% over limit
Discharged 1871.73 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
63% over limit
Discharged 32.5 mg/L against a permitted limit of 20 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Sulfate
93% over limit
Discharged 1744.6 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
43% over limit
Discharged 34.4 mg/L against a permitted limit of 24 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Uranium, total
74% over limit
Discharged 0.0522 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Uranium, total
98% over limit
Discharged 0.0594 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Sulfate
140% over limit
Discharged 2169.3 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Nitrogen, ammonia total [as N]
213% over limit
Discharged 37.6 mg/L against a permitted limit of 12 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Uranium, total
59% over limit
Discharged 0.0477 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Sulfate
166% over limit
Discharged 2403.61 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Nitrogen, ammonia total [as N]
125% over limit
Discharged 42.8 mg/L against a permitted limit of 19 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Sulfate
205% over limit
Discharged 2755.4 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Uranium, total
73% over limit
Discharged 0.0518 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Uranium, total
90% over limit
Discharged 0.057 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
225% over limit
Discharged 35.7 mg/L against a permitted limit of 11 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Sulfate
133% over limit
Discharged 2105.77 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Uranium, total
98% over limit
Discharged 0.0594 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Sulfate
159% over limit
Discharged 2338.01 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
32% over limit
Discharged 34.3 mg/L against a permitted limit of 26 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Uranium, total
99% over limit
Discharged 0.0596 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Sulfate
89% over limit
Discharged 1703.28 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Sulfate
88% over limit
Discharged 1692.39 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Uranium, total
25% over limit
Discharged 0.0376 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Sulfate
67% over limit
Discharged 1502.87 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Sulfate
60% over limit
Discharged 1445.53 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Uranium, total
15% over limit
Discharged 0.0345 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Sulfate
86% over limit
Discharged 1676.6 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Uranium, total
29% over limit
Discharged 0.0387 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Sulfate
38% over limit
Discharged 1240.85 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Uranium, total
22% over limit
Discharged 0.0367 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
October 31, 2024
Uranium, total
74% over limit
Discharged 0.0521 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Sulfate
149% over limit
Discharged 2242.9 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Uranium, total
62% over limit
Discharged 0.0486 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Sulfate
114% over limit
Discharged 1927.65 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Uranium, total
144% over limit
Discharged 0.0731 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Sulfate
150% over limit
Discharged 2253.72 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
July 31, 2024
Sulfate
129% over limit
Discharged 2064.63 mg/L against a permitted limit of 902 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Uranium, total
49% over limit
Discharged 0.0446 mg/L against a permitted limit of 0.03 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)