MANCHESTER WASTEWATER TREATMENT FACILITY
NPDES ID: MAG580043
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: 6 effluent violations.
Violations
June 30, 2026
Copper, total recoverable
224% over limit
Discharged 0.012 mg/L against a permitted limit of 0.0037 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
159% over limit
Discharged 0.015 mg/L against a permitted limit of 0.0058 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2026
Copper, total recoverable
224% over limit
Discharged 0.012 mg/L against a permitted limit of 0.0037 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
159% over limit
Discharged 0.015 mg/L against a permitted limit of 0.0058 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2026
Copper, total recoverable
72% over limit
Discharged 0.01 mg/L against a permitted limit of 0.0058 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
170% over limit
Discharged 0.01 mg/L against a permitted limit of 0.0037 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Copper, total recoverable
143% over limit
Discharged 0.009 mg/L against a permitted limit of 0.0037 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
72% over limit
Discharged 0.01 mg/L against a permitted limit of 0.0058 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Copper, total recoverable
238% over limit
Discharged 0.0125 mg/L against a permitted limit of 0.0037 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
141% over limit
Discharged 0.014 mg/L against a permitted limit of 0.0058 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Copper, total recoverable
197% over limit
Discharged 0.011 mg/L against a permitted limit of 0.0037 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
7% over limit
Discharged 15 MPN/100mL against a permitted limit of 14 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
90% over limit
Discharged 0.011 mg/L against a permitted limit of 0.0058 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Copper, total recoverable
305% over limit
Discharged 0.015 mg/L against a permitted limit of 0.0037 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
159% over limit
Discharged 0.015 mg/L against a permitted limit of 0.0058 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2025
Copper, total recoverable
95% over limit
Discharged 0.0113 mg/L against a permitted limit of 0.0058 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
157% over limit
Discharged 0.0095 mg/L against a permitted limit of 0.0037 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Copper, total recoverable
143% over limit
Discharged 0.009 mg/L against a permitted limit of 0.0037 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
55% over limit
Discharged 0.009 mg/L against a permitted limit of 0.0058 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2025
Copper, total recoverable
224% over limit
Discharged 0.012 mg/L against a permitted limit of 0.0037 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
124% over limit
Discharged 0.013 mg/L against a permitted limit of 0.0058 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
Copper, total recoverable
332% over limit
Discharged 0.016 mg/L against a permitted limit of 0.0037 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
245% over limit
Discharged 0.02 mg/L against a permitted limit of 0.0058 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2025
Copper, total recoverable
848% over limit
Discharged 0.055 mg/L against a permitted limit of 0.0058 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
1076% over limit
Discharged 0.0435 mg/L against a permitted limit of 0.0037 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Copper, total recoverable
176% over limit
Discharged 0.016 mg/L against a permitted limit of 0.0058 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
332% over limit
Discharged 0.016 mg/L against a permitted limit of 0.0037 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Copper, total recoverable
59% over limit
Discharged 0.0092 mg/L against a permitted limit of 0.0058 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
38% over limit
Discharged 0.0051 mg/L against a permitted limit of 0.0037 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Copper, total recoverable
21% over limit
Discharged 0.007 mg/L against a permitted limit of 0.0058 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
89% over limit
Discharged 0.007 mg/L against a permitted limit of 0.0037 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)