GARDNER W W T F
NPDES ID: MAG590013
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: 6 effluent violations.
Violations
May 31, 2026
Phosphorus, total [as P]
58% over limit
Discharged 0.19 mg/L against a permitted limit of 0.12 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
2% over limit
Discharged 2.32447998 kg/d against a permitted limit of 2.26999998 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
8% over limit
Discharged 203.61899829 kg/d against a permitted limit of 189.31799841 kg/d (ROLL AVG)
DMR, Limited - Numeric Violation
April 30, 2026
BOD, 5-day, 20 deg. C
15% over limit
Discharged 10 mg/L against a permitted limit of 8.7 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
7% over limit
Discharged 203.39199829 kg/d against a permitted limit of 189.31799841 kg/d (ROLL AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
93% over limit
Discharged 8.5 mg/L against a permitted limit of 4.4 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
91% over limit
Discharged 8.4 mg/L against a permitted limit of 4.4 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
6% over limit
Discharged 200.89499831 kg/d against a permitted limit of 189.31799841 kg/d (ROLL AVG)
DMR, Limited - Numeric Violation
NOEC Static Renewal 7Day Chronic Ceriodaphnia dubia
36% over limit
Discharged 50 % against a permitted limit of 78 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
19% over limit
Discharged 5.23 mg/L against a permitted limit of 4.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
100% over limit
Discharged 8.8 mg/L against a permitted limit of 4.4 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
30% over limit
Discharged 5.7 mg/L against a permitted limit of 4.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
5% over limit
Discharged 198.17099833 kg/d against a permitted limit of 189.31799841 kg/d (ROLL AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, total [as N]
3% over limit
Discharged 195.21999836 kg/d against a permitted limit of 189.31799841 kg/d (ROLL AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Nitrogen, total [as N]
1% over limit
Discharged 191.13399839 kg/d against a permitted limit of 189.31799841 kg/d (ROLL AVG)
DMR, Limited - Numeric Violation
August 31, 2025
E. coli
48% over limit
Discharged 187 MPN/100mL against a permitted limit of 126 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
E. coli
387% over limit
Discharged 1990 MPN/100mL against a permitted limit of 409 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2025
Phosphorus, total [as P]
27% over limit
Discharged 2.89197998 kg/d against a permitted limit of 2.26999998 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
25% over limit
Discharged 0.15 mg/L against a permitted limit of 0.12 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Solids, total suspended
114% over limit
Discharged 705.01659408 kg/d against a permitted limit of 329.60399723 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
66% over limit
Discharged 7.3 mg/L against a permitted limit of 4.4 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
8% over limit
Discharged 0.13 mg/L against a permitted limit of 0.12 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
118% over limit
Discharged 38 mg/L against a permitted limit of 17.4 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Nitrogen, ammonia total [as N]
14% over limit
Discharged 5.03 mg/L against a permitted limit of 4.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
84% over limit
Discharged 8.1 mg/L against a permitted limit of 4.4 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Nitrogen, ammonia total [as N]
23% over limit
Discharged 5.4 mg/L against a permitted limit of 4.4 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
December 31, 2024
9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
3-Perfluoropropyl propanoic acid (3:3 FTCA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Hexafluoropropylene oxide dimer acid (HFPO-DA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
3-Perfluoroheptyl propanoic acid (7:3 FTCA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Perfluoropentanesulfonic acid (PFPeS)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Perfluoro-4-methoxybutanoic acid (PFMBA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Perfluoro-3-methoxypropanoic acid (PFMPA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
2H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Perfluoro-3-methoxypropanoic acid (PFMPA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
3-Perfluoropropyl propanoic acid (3:3 FTCA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Hexafluoropropylene oxide dimer acid (HFPO-DA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Perfluoro-4-methoxybutanoic acid (PFMBA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Perfluoro-4-methoxybutanoic acid (PFMBA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Hexafluoropropylene oxide dimer acid (HFPO-DA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Perfluoro-3-methoxypropanoic acid (PFMPA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
3-Perfluoropropyl propanoic acid (3:3 FTCA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
3-Perfluoroheptyl propanoic acid (7:3 FTCA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
3-Perfluoroheptyl propanoic acid (7:3 FTCA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
September 30, 2024
Nitrogen, ammonia total [as N]
1050% over limit
Discharged 11.5 mg/L against a permitted limit of 1 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
NOEC Static Renewal 7Day Chronic Ceriodaphnia dubia
Limit violation
Discharged 6.25 % against a permitted limit of 78 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
415% over limit
Discharged 5.15 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Phosphorus, total [as P]
4% over limit
Discharged 0.125 mg/L against a permitted limit of 0.12 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2024
Nitrogen, ammonia total [as N]
190% over limit
Discharged 2.9 mg/L against a permitted limit of 1 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
72% over limit
Discharged 15 mg/L against a permitted limit of 8.7 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
44% over limit
Discharged 238.531598 kg/d against a permitted limit of 165.25599861 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)