RIO PUERCO WWTP/ROUTE 66 CASINO
NPDES ID: NM0030686
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
Violations
March 31, 2026
Solids, total dissolved
20% over limit
Discharged 300 mg/L against a permitted limit of 250 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Mercury, total [as Hg]
9% over limit
Discharged 0.0000012 mg/L against a permitted limit of 0.0000011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Solids, total dissolved
36% over limit
Discharged 340 mg/L against a permitted limit of 250 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2025
Mercury, total [as Hg]
418% over limit
Discharged 0.0000057 mg/L against a permitted limit of 0.0000011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2025
Solids, total dissolved
110% over limit
Discharged 756.36399364 kg/d against a permitted limit of 359.70419698 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total dissolved
980% over limit
Discharged 2700 mg/L against a permitted limit of 250 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
Mercury, total [as Hg]
82% over limit
Discharged 0.000002 mg/L against a permitted limit of 0.0000011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
June 30, 2025
Enterococci
0% over limit
Discharged 1.3 MPN/100mL against a permitted limit of 30 MPN/100mL (30DAVGEO)
DMR, Limited - Overdue
Mercury, total [as Hg]
0% over limit
Discharged 9e-8 mg/L against a permitted limit of 0.0000011 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 2 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Overdue
Mercury, total [as Hg]
0% over limit
Discharged 0 kg/d against a permitted limit of 0.00000158 kg/d (DAILY MX)
DMR, Limited - Overdue
Solids, total dissolved
780% over limit
Discharged 2200 mg/L against a permitted limit of 250 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
0% over limit
Discharged 0.63559999 kg/d against a permitted limit of 43.18901964 kg/d (30DA AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 4 mg/L against a permitted limit of 45 mg/L (7 DA AVG)
DMR, Limited - Overdue
Solids, total dissolved
99% over limit
Discharged 715.95799398 kg/d against a permitted limit of 359.70419698 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.076 MGD against a permitted limit of 0 MGD (7 DA AVG)
DMR, Monitor Only - Overdue
E. coli
0% over limit
Discharged 5 MPN/100mL against a permitted limit of 88 MPN/100mL (DAILY MX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.2 SU against a permitted limit of 6.6 SU (MINIMUM)
DMR, Limited - Overdue
Solids, suspended percent removal
0% over limit
Discharged 95 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.3 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.057 MGD against a permitted limit of 0 MGD (30DA AVG)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0.63559999 kg/d against a permitted limit of 64.78579946 kg/d (7 DA AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 8 mg/L against a permitted limit of 45 mg/L (7 DA AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 4.8 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 1.27119999 kg/d against a permitted limit of 64.78579946 kg/d (7 DA AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0.3178 kg/d against a permitted limit of 43.18901964 kg/d (30DA AVG)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 5.3 mg/L against a permitted limit of 5 mg/L (MINIMUM)
DMR, Limited - Overdue
E. coli
0% over limit
Discharged 1 MPN/100mL against a permitted limit of 47 MPN/100mL (30DAVGEO)
DMR, Limited - Overdue
BOD, 5-day, percent removal
0% over limit
Discharged 99 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (INST MAX)
DMR, Monitor Only - Overdue
April 30, 2025
Mercury, total [as Hg]
1082% over limit
Discharged 0.000013 mg/L against a permitted limit of 0.0000011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
Mercury, total [as Hg]
58% over limit
Discharged 0.0000025 kg/d against a permitted limit of 0.00000158 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total dissolved
1060% over limit
Discharged 2900 mg/L against a permitted limit of 250 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total dissolved
107% over limit
Discharged 746.37599373 kg/d against a permitted limit of 359.70419698 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Mercury, total [as Hg]
127% over limit
Discharged 0.0000025 mg/L against a permitted limit of 0.0000011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2025
Mercury, total [as Hg]
100% over limit
Discharged 0.0000022 mg/L against a permitted limit of 0.0000011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Mercury, total [as Hg]
39% over limit
Discharged 0.0000022 kg/d against a permitted limit of 0.00000158 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
Solids, total dissolved
580% over limit
Discharged 1700 mg/L against a permitted limit of 250 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Mercury, total [as Hg]
46% over limit
Discharged 0.0000023 kg/d against a permitted limit of 0.00000158 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Mercury, total [as Hg]
309% over limit
Discharged 0.0000045 mg/L against a permitted limit of 0.0000011 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)