GUIDA-SIEBERT DAIRY COMPANY
NPDES ID: CTP002201
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: 1 effluent violation.
Violations
May 31, 2026
BOD, 5-day, 20 deg. C
9% over limit
Discharged 2726 mg/L against a permitted limit of 2500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
BOD, 5-day, 20 deg. C
18% over limit
Discharged 2945 mg/L against a permitted limit of 2500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
BOD, 5-day, 20 deg. C
40% over limit
Discharged 3500 mg/L against a permitted limit of 2500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
33% over limit
Discharged 5300 mg/L against a permitted limit of 4000 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2025
BOD, 5-day, 20 deg. C
33% over limit
Discharged 5300 mg/L against a permitted limit of 4000 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
54% over limit
Discharged 3850 mg/L against a permitted limit of 2500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
BOD, 5-day, 20 deg. C
30% over limit
Discharged 3250 mg/L against a permitted limit of 2500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
23% over limit
Discharged 4900 mg/L against a permitted limit of 4000 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2025
BOD, 5-day, 20 deg. C
4% over limit
Discharged 2600 mg/L against a permitted limit of 2500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
BOD, 5-day, 20 deg. C
22% over limit
Discharged 3050 mg/L against a permitted limit of 2500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
BOD, 5-day, 20 deg. C
33% over limit
Discharged 5300 mg/L against a permitted limit of 4000 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Oxygen demand, chem. [low level] [COD]
0% over limit
Discharged 7081 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 2080 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 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
35% over limit
Discharged 3375 mg/L against a permitted limit of 2500 mg/L (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
35% over limit
Discharged 3375 mg/L against a permitted limit of 2500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
BOD, 5-day, 20 deg. C
23% over limit
Discharged 3075 mg/L against a permitted limit of 2500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
BOD, 5-day, 20 deg. C
8% over limit
Discharged 2700 mg/L against a permitted limit of 2500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Oxygen demand, chem. [low level] [COD]
0% over limit
Discharged 5880 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
22% over limit
Discharged 3060 mg/L against a permitted limit of 2500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
3% over limit
Discharged 4100 mg/L against a permitted limit of 4000 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
BOD, 5-day, 20 deg. C
15% over limit
Discharged 2875 mg/L against a permitted limit of 2500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
BOD, 5-day, 20 deg. C
60% over limit
Discharged 4000 mg/L against a permitted limit of 2500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
63% over limit
Discharged 6500 mg/L against a permitted limit of 4000 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2025
BOD, 5-day, 20 deg. C
45% over limit
Discharged 3625 mg/L against a permitted limit of 2500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
15% over limit
Discharged 4600 mg/L against a permitted limit of 4000 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
BOD, 5-day, 20 deg. C
15% over limit
Discharged 4600 mg/L against a permitted limit of 4000 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
BOD, 5-day, 20 deg. C
28% over limit
Discharged 5100 mg/L against a permitted limit of 4000 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
75% over limit
Discharged 4375 mg/L against a permitted limit of 2500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2024
BOD, 5-day, 20 deg. C
26% over limit
Discharged 3140 mg/L against a permitted limit of 2500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
13% over limit
Discharged 4500 mg/L against a permitted limit of 4000 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2024
BOD, 5-day, 20 deg. C
29% over limit
Discharged 3225 mg/L against a permitted limit of 2500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
5% over limit
Discharged 4200 mg/L against a permitted limit of 4000 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2024
BOD, 5-day, 20 deg. C
9% over limit
Discharged 2734 mg/L against a permitted limit of 2500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
55% over limit
Discharged 6200 mg/L against a permitted limit of 4000 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (22 days ago)