AGROPUR (LAKE NORDEN FACILITY)
NPDES ID: SD0025411
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
This quarter: 4 effluent violations.
Violations
May 31, 2026
Alkalinity, total [as CaCO3]
15% over limit
Discharged 860 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Conductivity
133% over limit
Discharged 3632 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Conductivity
121% over limit
Discharged 3450 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
Alkalinity, total [as CaCO3]
22% over limit
Discharged 912 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Alkalinity, total [as CaCO3]
22% over limit
Discharged 913 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Conductivity
125% over limit
Discharged 3503 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
Toxicity [acute], Pimephales promelas [Fathead Minnow]
30% over limit
Discharged 1.3 toxic against a permitted limit of 1 toxic (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Conductivity
122% over limit
Discharged 3470 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
Alkalinity, total [as CaCO3]
21% over limit
Discharged 910 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Conductivity
119% over limit
Discharged 3419 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
Alkalinity, total [as CaCO3]
24% over limit
Discharged 927 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Conductivity
141% over limit
Discharged 3754 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
128% over limit
Discharged 694.16599417 kg/d against a permitted limit of 304.17999744 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Alkalinity, total [as CaCO3]
26% over limit
Discharged 943 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
1% over limit
Discharged 154.3599987 kg/d against a permitted limit of 152.99799871 kg/d (30DA AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Alkalinity, total [as CaCO3]
26% over limit
Discharged 944 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Conductivity
158% over limit
Discharged 4032 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Solids, total dissolved
1% over limit
Discharged 2527 mg/L against a permitted limit of 2500 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Alkalinity, total [as CaCO3]
27% over limit
Discharged 954 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Conductivity
164% over limit
Discharged 4122 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Alkalinity, total [as CaCO3]
20% over limit
Discharged 902 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Conductivity
163% over limit
Discharged 4109 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Conductivity
150% over limit
Discharged 3900 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
Alkalinity, total [as CaCO3]
10% over limit
Discharged 827 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Alkalinity, total [as CaCO3]
14% over limit
Discharged 858 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Conductivity
140% over limit
Discharged 3739 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Conductivity
133% over limit
Discharged 3640 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
Alkalinity, total [as CaCO3]
14% over limit
Discharged 853 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Alkalinity, total [as CaCO3]
10% over limit
Discharged 828 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Conductivity
132% over limit
Discharged 3626 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Conductivity
127% over limit
Discharged 3539 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
Alkalinity, total [as CaCO3]
10% over limit
Discharged 823 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Toxicity [acute], Ceriodaphnia dubia
10% over limit
Discharged 1.1 toxic against a permitted limit of 1 toxic (DAILY MX)
DMR, Limited - Numeric Violation
Conductivity
132% over limit
Discharged 3623 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
Alkalinity, total [as CaCO3]
12% over limit
Discharged 843 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Conductivity
141% over limit
Discharged 3753 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
Alkalinity, total [as CaCO3]
13% over limit
Discharged 844 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Conductivity
151% over limit
Discharged 3920 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
Alkalinity, total [as CaCO3]
13% over limit
Discharged 849 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Conductivity
153% over limit
Discharged 3940 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
Conductivity
4% over limit
Discharged 4540 umho/cm against a permitted limit of 4375 umho/cm (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
Conductivity
1% over limit
Discharged 4410 umho/cm against a permitted limit of 4375 umho/cm (DAILY MX)
DMR, Limited - Numeric Violation
Alkalinity, total [as CaCO3]
16% over limit
Discharged 867 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Conductivity
169% over limit
Discharged 4198 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved
1% over limit
Discharged 2536 mg/L against a permitted limit of 2500 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Toxicity [acute], Ceriodaphnia dubia
10% over limit
Discharged 1.1 toxic against a permitted limit of 1 toxic (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2024
Alkalinity, total [as CaCO3]
13% over limit
Discharged 847 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Conductivity
146% over limit
Discharged 3831 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Alkalinity, total [as CaCO3]
28% over limit
Discharged 957 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Conductivity
134% over limit
Discharged 3658 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Conductivity
141% over limit
Discharged 3756 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
Alkalinity, total [as CaCO3]
16% over limit
Discharged 872 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
July 31, 2024
Alkalinity, total [as CaCO3]
12% over limit
Discharged 842 mg/L against a permitted limit of 750 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Conductivity
136% over limit
Discharged 3681 umho/cm against a permitted limit of 1560 umho/cm (30DA AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)