MONTVILLE WPCA
NPDES ID: CT0100935
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: 7 effluent violations.
Violations
May 31, 2026
Solids, total suspended
2% over limit
Discharged 46 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Enterococci
43% over limit
Discharged 50 MPN/100mL against a permitted limit of 35 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
April 30, 2026
Solids, total suspended
207% over limit
Discharged 138 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
102% over limit
Discharged 91 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
60% over limit
Discharged 48 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
40% over limit
Discharged 79 % against a permitted limit of 85 % (MN % RMV)
DMR, Limited - Numeric Violation
Solids, total suspended
187% over limit
Discharged 86 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
BOD, 5-day, 20 deg. C
18% over limit
Discharged 53 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
103% over limit
Discharged 61 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
7% over limit
Discharged 32 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
91% over limit
Discharged 86 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
27% over limit
Discharged 81 % against a permitted limit of 85 % (MN % RMV)
DMR, Limited - Numeric Violation
February 28, 2026
Solids, total suspended
376% over limit
Discharged 214 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
122% over limit
Discharged 100 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
167% over limit
Discharged 60 % against a permitted limit of 85 % (MN % RMV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
70% over limit
Discharged 51 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
427% over limit
Discharged 158 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Solids, total suspended
313% over limit
Discharged 186 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
133% over limit
Discharged 65 % against a permitted limit of 85 % (MN % RMV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
3% over limit
Discharged 31 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
350% over limit
Discharged 135 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
BOD, 5-day, 20 deg. C
87% over limit
Discharged 84 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
198% over limit
Discharged 134 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
17% over limit
Discharged 35 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
107% over limit
Discharged 62 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Enterococci
14% over limit
Discharged 40 MPN/100mL against a permitted limit of 35 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
September 30, 2025
Enterococci
20% over limit
Discharged 42 MPN/100mL against a permitted limit of 35 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
August 31, 2025
Enterococci
31% over limit
Discharged 46 MPN/100mL against a permitted limit of 35 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
Solids, total suspended
16% over limit
Discharged 52 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2025
Enterococci
6% over limit
Discharged 37 MPN/100mL against a permitted limit of 35 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
June 30, 2025
Enterococci
34% over limit
Discharged 47 MPN/100mL against a permitted limit of 35 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
May 31, 2025
Enterococci
34% over limit
Discharged 47 MPN/100mL against a permitted limit of 35 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
January 31, 2025
Solids, total suspended
42% over limit
Discharged 64 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
Solids, total suspended
567% over limit
Discharged 300 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
107% over limit
Discharged 62 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)