LYONS STP
NPDES ID: PA0085171
D — SNC: Discharge monitoring report not received
The facility didn't submit its required discharge monitoring report.
This quarter: 1 effluent violation, 48 reporting violations.
Violations
May 31, 2026
Solids, total dissolved
1% over limit
Discharged 1007 mg/L against a permitted limit of 1000 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Overdue
Copper, total [as Cu]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Lead, total [as Pb]
0% over limit
Discharged 0 kg/d against a permitted limit of 0.01362 kg/d (MO AVG)
DMR, Limited - Overdue
Solids, total dissolved
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Copper, total [as Cu]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0 mg/L against a permitted limit of 40 mg/L (WKLY AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 50.84799957 kg/d (WKLY AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Overdue
Bromide [as Br]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Ultraviolet light intensity
0% over limit
Discharged 0 uW/cm2 against a permitted limit of 0 uW/cm2 (INST MIN)
DMR, Monitor Only - Overdue
Chloride [as Cl]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Bromide [as Br]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 34.04999971 kg/d (MO AVG)
DMR, Limited - Overdue
Lead, total [as Pb]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.021 mg/L (DAILY MX)
DMR, Limited - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0 kg/d against a permitted limit of 2.26999998 kg/d (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Sulfate, total [as SO4]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0 kg/d against a permitted limit of 28.14799976 kg/d (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Coliform, fecal general
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 10000 MPN/100mL (INST MAX)
DMR, Limited - Overdue
Lead, total [as Pb]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.013 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrite + Nitrate total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Coliform, fecal general
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 2000 MPN/100mL (GEO MEAN)
DMR, Limited - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (INST MIN)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 kg/d against a permitted limit of 16.79799986 kg/d (MO AVG)
DMR, Limited - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Chloride [as Cl]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Suspended Solids, Total
0% over limit
Discharged 0 kg against a permitted limit of 0 kg (MO TOTAL)
DMR, Monitor Only - Overdue
Phosphorus, Total
0% over limit
Discharged 0 kg against a permitted limit of 0 kg (MO TOTAL)
DMR, Monitor Only - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0 kg/d against a permitted limit of 45.39999962 kg/d (WKLY AVG)
DMR, Limited - Overdue
Nitrite + Nitrate total [as N]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 mg/L against a permitted limit of 1000 mg/L (MO AVG)
DMR, Limited - Overdue
Sulfate, total [as SO4]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Overdue
Copper, total [as Cu]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 0 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Overdue
February 28, 2026
Solids, total dissolved
2% over limit
Discharged 1017 mg/L against a permitted limit of 1000 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Solids, total dissolved
0% over limit
Discharged 1003 mg/L against a permitted limit of 1000 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Solids, total suspended
7% over limit
Discharged 48.2 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved
1% over limit
Discharged 1007 mg/L against a permitted limit of 1000 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Solids, total dissolved
2% over limit
Discharged 1020 mg/L against a permitted limit of 1000 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Solids, total dissolved
1% over limit
Discharged 1010 mg/L against a permitted limit of 1000 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Solids, total dissolved
1% over limit
Discharged 1005 mg/L against a permitted limit of 1000 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Solids, total dissolved
3% over limit
Discharged 1029 mg/L against a permitted limit of 1000 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2024
Solids, total dissolved
6% over limit
Discharged 1060 mg/L against a permitted limit of 1000 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Solids, total dissolved
8% over limit
Discharged 1083 mg/L against a permitted limit of 1000 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Solids, total dissolved
7% over limit
Discharged 1073 mg/L against a permitted limit of 1000 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 15, 2026 (6 hours ago)