NPDES ID: CO0048445
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: 4 effluent violations.
Violations
May 31, 2026
Manganese, dissolved [as Mn]
45% over limit
Discharged 0.0261 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Manganese, dissolved [as Mn]
42% over limit
Discharged 0.0256 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Manganese, dissolved [as Mn]
42% over limit
Discharged 0.0255 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Manganese, dissolved [as Mn]
44% over limit
Discharged 0.0259 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Manganese, dissolved [as Mn]
46% over limit
Discharged 0.0263 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Manganese, dissolved [as Mn]
48% over limit
Discharged 0.0267 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Manganese, dissolved [as Mn]
50% over limit
Discharged 0.02698 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Manganese, dissolved [as Mn]
45% over limit
Discharged 0.0261 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
E. coli, thermotol, MF, MTEC
Limit violation
Discharged 9.9 MPN/100mL against a permitted limit of 126 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
E. coli, thermotol, MF, MTEC
Limit violation
Discharged 11.6 MPN/100mL against a permitted limit of 252 MPN/100mL (MX 7D AV)
DMR, Limited - Numeric Violation
September 30, 2025
Manganese, dissolved [as Mn]
54% over limit
Discharged 0.0278 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Manganese, dissolved [as Mn]
55% over limit
Discharged 0.0279 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Manganese, dissolved [as Mn]
57% over limit
Discharged 0.0283 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Manganese, dissolved [as Mn]
57% over limit
Discharged 0.0282 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Manganese, dissolved [as Mn]
56% over limit
Discharged 0.028 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
Cadmium, potentially dissolvd
809% over limit
Discharged 0.001 mg/L against a permitted limit of 0.00011 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Manganese, dissolved [as Mn]
62% over limit
Discharged 0.0291 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Manganese, dissolved [as Mn]
60% over limit
Discharged 0.0288 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 6.4 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Numeric Violation
February 28, 2025
Manganese, dissolved [as Mn]
53% over limit
Discharged 0.0275 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
54% over limit
Discharged 4.3 mg/L against a permitted limit of 2.8 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Manganese, dissolved [as Mn]
127% over limit
Discharged 0.12500001 mg/L against a permitted limit of 0.055 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Copper, potentially dissolved
0% over limit
Discharged 0.0031 mg/L against a permitted limit of 0.075 mg/L (30DA AVG)
DMR, Limited - Overdue
Manganese, dissolved [as Mn]
30% over limit
Discharged 0.0234 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
35% over limit
Discharged 2.025 MGD against a permitted limit of 1.5 MGD (30DA AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Manganese, dissolved [as Mn]
26% over limit
Discharged 0.0227 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
29% over limit
Discharged 1.942 MGD against a permitted limit of 1.5 MGD (30DA AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Manganese, dissolved [as Mn]
23% over limit
Discharged 0.0221 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
October 31, 2024
Manganese, dissolved [as Mn]
19% over limit
Discharged 0.0215 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
36% over limit
Discharged 2.036 MGD against a permitted limit of 1.5 MGD (30DA AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Manganese, dissolved [as Mn]
16% over limit
Discharged 0.0209 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
47% over limit
Discharged 2.202 MGD against a permitted limit of 1.5 MGD (30DA AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Manganese, dissolved [as Mn]
16% over limit
Discharged 0.0208 mg/L against a permitted limit of 0.018 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
36% over limit
Discharged 2.037 MGD against a permitted limit of 1.5 MGD (30DA AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (5 days ago)