EVERETT SHOPS MBTA
NPDES ID: MAG250005
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: 11 effluent violations.
Violations
April 30, 2026
Chlorine, total residual
87% over limit
Discharged 1.87 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.76 SU against a permitted limit of 8.3 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Chlorine, total residual
87% over limit
Discharged 1.87 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Chlorine, total residual
70% over limit
Discharged 1.7 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
70% over limit
Discharged 1.7 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
pH
0% over limit
Discharged 9.35 SU against a permitted limit of 8.3 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Chlorine, total residual
69% over limit
Discharged 1.69 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
69% over limit
Discharged 1.69 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
684515% over limit
Discharged 89 MGD against a permitted limit of 0.013 MGD (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Flow, in conduit or thru treatment plant
92208% over limit
Discharged 12 MGD against a permitted limit of 0.013 MGD (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 8.5 SU against a permitted limit of 8.3 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Chlorine, total residual
71% over limit
Discharged 1.71 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
71% over limit
Discharged 1.71 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Chlorine, total residual
117% over limit
Discharged 2.17 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 8.71 SU against a permitted limit of 8.3 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Chlorine, total residual
117% over limit
Discharged 2.17 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2025
pH
0% over limit
Discharged 9.09 SU against a permitted limit of 8.3 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Chlorine, total residual
26% over limit
Discharged 1.26 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
161438% over limit
Discharged 21 MGD against a permitted limit of 0.013 MGD (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
26% over limit
Discharged 1.26 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Chlorine, total residual
61% over limit
Discharged 1.61 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.2 SU against a permitted limit of 8.3 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Chlorine, total residual
61% over limit
Discharged 1.61 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Chlorine, total residual
48% over limit
Discharged 1.48 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Overdue
Chlorine, total residual
48% over limit
Discharged 1.48 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
48% over limit
Discharged 1.48 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Overdue
Chlorine, total residual
48% over limit
Discharged 1.48 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
246054% over limit
Discharged 32 MGD against a permitted limit of 0.013 MGD (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.19 SU against a permitted limit of 8.3 SU (MAXIMUM)
DMR, Limited - Numeric Violation
July 31, 2025
pH
0% over limit
Discharged 9.35 SU against a permitted limit of 8.3 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Chlorine, total residual
47% over limit
Discharged 1.47000007 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
47% over limit
Discharged 1.47000007 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
346054% over limit
Discharged 45 MGD against a permitted limit of 0.013 MGD (DAILY MX)
DMR, Limited - Numeric Violation
June 30, 2025
Chlorine, total residual
49% over limit
Discharged 1.49000007 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 8.81 SU against a permitted limit of 8.3 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
546054% over limit
Discharged 71 MGD against a permitted limit of 0.013 MGD (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
49% over limit
Discharged 1.49000007 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2025
pH
0% over limit
Discharged 9.03 SU against a permitted limit of 8.5 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
259900% over limit
Discharged 0.000026 MGD against a permitted limit of 1e-8 MGD (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
13% over limit
Discharged 1.13000005 mg/L against a permitted limit of 1.00000005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
Flow, in conduit or thru treatment plant
109900% over limit
Discharged 0.000011 MGD against a permitted limit of 1e-8 MGD (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
64% over limit
Discharged 1.64000008 mg/L against a permitted limit of 1.00000005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.35 SU against a permitted limit of 8.5 SU (MAXIMUM)
DMR, Limited - Numeric Violation
March 31, 2025
Flow, in conduit or thru treatment plant
219900% over limit
Discharged 0.000022 MGD against a permitted limit of 1e-8 MGD (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
90% over limit
Discharged 1.90000009 mg/L against a permitted limit of 1.00000005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.8 SU against a permitted limit of 8.5 SU (MAXIMUM)
DMR, Limited - Numeric Violation
February 28, 2025
pH
0% over limit
Discharged 8.6 SU against a permitted limit of 8.5 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
629900% over limit
Discharged 0.000063 MGD against a permitted limit of 1e-8 MGD (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
42% over limit
Discharged 1.42000007 mg/L against a permitted limit of 1.00000005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2025
pH
0% over limit
Discharged 8.8 SU against a permitted limit of 8.5 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
359900% over limit
Discharged 0.000036 MGD against a permitted limit of 1e-8 MGD (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
Flow, in conduit or thru treatment plant
759900% over limit
Discharged 0.000076 MGD against a permitted limit of 1e-8 MGD (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.000019 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Chlorine, total residual
0% over limit
Discharged 0.44000002 mg/L against a permitted limit of 1.00000005 mg/L (DAILY MX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 8.03 SU against a permitted limit of 8.5 SU (MAXIMUM)
DMR, Limited - Overdue
Temperature, water deg. fahrenheit
0% over limit
Discharged 64.58 deg F against a permitted limit of 0 deg F (DAILY MX)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
189900% over limit
Discharged 0.000019 MGD against a permitted limit of 1e-8 MGD (DAILY MX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
189900% over limit
Discharged 0.000019 MGD against a permitted limit of 1e-8 MGD (DAILY MX)
DMR, Limited - Numeric Violation
Temperature, water deg. fahrenheit
0% over limit
Discharged 64.58 deg F against a permitted limit of 80 deg F (MO AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 8.03 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Overdue
October 31, 2024
Chlorine, total residual
58% over limit
Discharged 1.58000008 mg/L against a permitted limit of 1.00000005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
479900% over limit
Discharged 0.000048 MGD against a permitted limit of 1e-8 MGD (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2024
pH
0% over limit
Discharged 7.56 SU against a permitted limit of 8.5 SU (MAXIMUM)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
509900% over limit
Discharged 0.000051 MGD against a permitted limit of 1e-8 MGD (DAILY MX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
509900% over limit
Discharged 0.000051 MGD against a permitted limit of 1e-8 MGD (DAILY MX)
DMR, Limited - Numeric Violation
Temperature, water deg. fahrenheit
0% over limit
Discharged 73.76 deg F against a permitted limit of 0 deg F (DAILY MX)
DMR, Monitor Only - Overdue
Temperature, water deg. fahrenheit
0% over limit
Discharged 73.76 deg F against a permitted limit of 80 deg F (MO AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.000051 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Chlorine, total residual
59% over limit
Discharged 1.59000008 mg/L against a permitted limit of 1.00000005 mg/L (DAILY MX)
DMR, Limited - Overdue
Chlorine, total residual
59% over limit
Discharged 1.59000008 mg/L against a permitted limit of 1.00000005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 7.56 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Overdue
August 31, 2024
Flow, in conduit or thru treatment plant
519900% over limit
Discharged 0.000052 MGD against a permitted limit of 1e-8 MGD (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
64% over limit
Discharged 1.64000008 mg/L against a permitted limit of 1.00000005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2024
Flow, in conduit or thru treatment plant
299900% over limit
Discharged 0.00003 MGD against a permitted limit of 1e-8 MGD (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 15, 2026 (6 days ago)