MERIDEN VILLAGE WATER DISTRICT
NPDES ID: NHG580003
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: 2 effluent violations.
Violations
April 30, 2026
Phosphorus, total [as P]
639% over limit
Discharged 0.77179999 kg/d against a permitted limit of 0.10442 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
43% over limit
Discharged 0.01 mg/L against a permitted limit of 0.007 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Copper, total recoverable
14% over limit
Discharged 0.016 mg/L against a permitted limit of 0.014 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
129% over limit
Discharged 0.016 mg/L against a permitted limit of 0.007 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Copper, total recoverable
86% over limit
Discharged 0.013 mg/L against a permitted limit of 0.007 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Copper, total recoverable
129% over limit
Discharged 0.016 mg/L against a permitted limit of 0.007 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
29% over limit
Discharged 0.018 mg/L against a permitted limit of 0.014 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Copper, total recoverable
57% over limit
Discharged 0.011 mg/L against a permitted limit of 0.007 mg/L (MO AVG)
DMR, Limited - Numeric Violation
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
Copper, total recoverable
7% over limit
Discharged 0.015 mg/L against a permitted limit of 0.014 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
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
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
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
May 31, 2025
Phosphorus, total [as P]
535% over limit
Discharged 0.66283999 kg/d against a permitted limit of 0.10442 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
108% over limit
Discharged 26 mg/L against a permitted limit of 12.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Copper, total recoverable
29% over limit
Discharged 0.009 mg/L against a permitted limit of 0.007 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
639% over limit
Discharged 0.77179999 kg/d against a permitted limit of 0.10442 kg/d (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Copper, total recoverable
157% over limit
Discharged 0.018 mg/L against a permitted limit of 0.007 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
43% over limit
Discharged 0.02 mg/L against a permitted limit of 0.014 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2025
Copper, total recoverable
43% over limit
Discharged 0.02 mg/L against a permitted limit of 0.014 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
171% over limit
Discharged 0.019 mg/L against a permitted limit of 0.007 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Copper, total recoverable
143% over limit
Discharged 0.017 mg/L against a permitted limit of 0.007 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
29% over limit
Discharged 0.018 mg/L against a permitted limit of 0.014 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
Copper, total recoverable
14% over limit
Discharged 0.008 mg/L against a permitted limit of 0.007 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)