LOS ALAMOS COUNTY PUD-BAYO WWTP
NPDES ID: NM0020141
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: 1 effluent violation, 3 single-event violations, 6 reporting violations.
Violations
May 31, 2026
Manganese, total [as Mn]
890% over limit
Discharged 78.22419934 kg/d against a permitted limit of 7.89959993 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Methylmercury
1713% over limit
Discharged 0.00010624 kg/d against a permitted limit of 0.00000586 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
12101% over limit
Discharged 10.89599991 kg/d against a permitted limit of 0.0893018 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2026
Copper, total [as Cu]
18812% over limit
Discharged 16.88879986 kg/d against a permitted limit of 0.0893018 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Manganese, total [as Mn]
726% over limit
Discharged 65.23979945 kg/d against a permitted limit of 7.89959993 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Methylmercury
2255% over limit
Discharged 0.00013802 kg/d against a permitted limit of 0.00000586 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 6.23 SU against a permitted limit of 6.6 SU (MINIMUM)
DMR, Limited - Numeric Violation
March 31, 2026
Methylmercury
2023% over limit
Discharged 0.0001244 kg/d against a permitted limit of 0.00000586 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Manganese, total [as Mn]
684% over limit
Discharged 61.97099948 kg/d against a permitted limit of 7.89959993 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
15457% over limit
Discharged 13.89239988 kg/d against a permitted limit of 0.0893018 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Copper, total [as Cu]
13982% over limit
Discharged 12.57579989 kg/d against a permitted limit of 0.0893018 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Methylmercury
2092% over limit
Discharged 0.00012848 kg/d against a permitted limit of 0.00000586 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Manganese, total [as Mn]
747% over limit
Discharged 66.87419944 kg/d against a permitted limit of 7.89959993 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Methylmercury
2317% over limit
Discharged 0.00014165 kg/d against a permitted limit of 0.00000586 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Manganese, total [as Mn]
884% over limit
Discharged 77.77019935 kg/d against a permitted limit of 7.89959993 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
15304% over limit
Discharged 13.75619988 kg/d against a permitted limit of 0.0893018 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Copper, total [as Cu]
0% over limit
Discharged 0 kg/d against a permitted limit of 0.0893018 kg/d (DAILY MX)
DMR, Limited - Overdue
Manganese, total [as Mn]
710% over limit
Discharged 63.96859946 kg/d against a permitted limit of 7.89959993 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Methylmercury
2480% over limit
Discharged 0.00015118 kg/d against a permitted limit of 0.00000586 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2025
Copper, total [as Cu]
0% over limit
Discharged 0 kg/d against a permitted limit of 0.0893018 kg/d (DAILY MX)
DMR, Limited - Overdue
Manganese, total [as Mn]
579% over limit
Discharged 53.61739955 kg/d against a permitted limit of 7.89959993 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Methylmercury
1202% over limit
Discharged 0.00007627 kg/d against a permitted limit of 0.00000586 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2025
Copper, total [as Cu]
0% over limit
Discharged 0 kg/d against a permitted limit of 0.0893018 kg/d (DAILY MX)
DMR, Limited - Overdue
Manganese, total [as Mn]
394% over limit
Discharged 38.99859967 kg/d against a permitted limit of 7.89959993 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Methylmercury
512% over limit
Discharged 0.00003587 kg/d against a permitted limit of 0.00000586 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2025
E. coli
45% over limit
Discharged 1358.97 MPN/100mL against a permitted limit of 940 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2025
pH
0% over limit
Discharged 6.59 SU against a permitted limit of 6.6 SU (MINIMUM)
DMR, Limited - Numeric Violation
March 31, 2025
pH
0% over limit
Discharged 6.43 SU against a permitted limit of 6.6 SU (MINIMUM)
DMR, Limited - Numeric Violation
February 28, 2025
pH
0% over limit
Discharged 6.57 SU against a permitted limit of 6.6 SU (MINIMUM)
DMR, Limited - Numeric Violation
January 31, 2025
pH
0% over limit
Discharged 6.4 SU against a permitted limit of 6.6 SU (MINIMUM)
DMR, Limited - Numeric Violation
December 31, 2024
pH
0% over limit
Discharged 6.46 SU against a permitted limit of 6.6 SU (MINIMUM)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)