January 2019 HAA5 Public Notification
Public Notification of Haloacetic Acid (HAA5) Maximum Contaminant Level (MCL) Violation (Archive: January 18, 2019)
Notificación Pública de Violación de Niveles Máximos de Contaminantes (MCL) del Ácido Haloacético 5 (HAA5) (Archivo: January 18, 2019)
April 2019 HAA5 Public Notification
Public Notification of Haloacetic Acid (HAA5) Maximum Contaminant Level (MCL) Violation (Archive: April 5, 2019)
July 2019 HAA5 Public Notification
Public Notification of Haloacetic Acid (HAA5) Maximum Contaminant Level (MCL) Violation (Archive: July 8, 2019)
October 2019 HAA5 Public Notification
Public Notification of Haloacetic Acid (HAA5) Maximum Contaminant Level (MCL) Violation – (Archive: October 7, 2019)
Notificación Pública de Violación de Niveles Máximos de Contaminantes (MCL) del Ácido Haloacético 5 (HAA5) – (Archivo: 7 de octubre, 2019)
January 2020 HAA5 Public Notification
Public Notification of Haloacetic Acid (HAA5) Maximum Contaminant Level (MCL) Violation – (Archive: January 6, 2020)
Notificación Pública de Violación de Niveles Máximos de Contaminantes (MCL) del Ácido Haloacético 5 (HAA5) – (Archivo: 6 de enero, 2020)
April 2020 HAA5 Public Notification
Public Notification of Haloacetic Acid (HAA5) Maximum Contaminant Level (MCL) Violation – (Archive: April 6, 2020)
Notificación Pública de Violación de Niveles Máximos de Contaminantes (MCL) del Ácido Haloacético 5 (HAA5) – (Archivo: 6 de abril, 2020)
July 2020 HAA5 Public Notification
Public Notification of Haloacetic Acid (HAA5) Maximum Contaminant Level (MCL) Violation - (Archive: July 7, 2020)
Notificación Pública de Violación de Niveles Máximos de Contaminantes (MCL) del Ácido Haloacético 5 (HAA5) – (Archivo: 7 de julio, 2020)
October 2020 HAA5 Public Notification
Public Notification of Haloacetic Acid (HAA5) Maximum Contaminant Level (MCL) Violation - (Archive: October 6, 2020)
Notificación Pública de Violación de Niveles Máximos de Contaminantes (MCL) del Ácido Haloacético 5 (HAA5) - (Archivo: 6 de octubre, 2020)
December 2020 Sampling Results
The Commission conducts sampling for HAA5 quarterly, in accordance with MassDEP and EPA regulations. Test results from December 1, 2020, indicated that HAA5 levels were below regulatory limits at all eight sample locations.
While this is good news, it has been observed that HAA5 levels can fluctuate due to a variety of factors. Therefore it is possible that HAA5 levels could elevate above the regulatory limit again due to environmental conditions or other factors.
April 2021 HAA5 Public Notification
Public Notification of Haloacetic Acid (HAA5) Maximum Contaminant Level (MCL) Violation - (Archive: April 7, 2021)
Notificación Pública de Violación de Niveles Máximos de Contaminantes (MCL) del Ácido Haloacético 5 (HAA5) - (Archivo: 7 de abril, 2021)
October 2021 HAA5 Public Notification
Public Notification of Haloacetic Acid (HAA5) Maximum Contaminant Level (MCL) Violation - (Archive: October 6, 2021)
Notificación Pública de Violación de Niveles Máximos de Contaminantes (MCL) del Ácido Haloacético 5 (HAA5) - (Archivo: 6 de octubre, 2021)
January 2022 HAA5 Public Notification
April 2022 DBP Notification
July 2022 DBP Notification
October 2022 DBP Notification
January 2023 DPB Notification
April 2023 HAA5 Notification
DBP Test Results – March 2023*
Public Notification of Haloacetic Acid (HAA5) Maximum Contaminant Level (MCL) Violation – April 7, 2023
July 2023 HAA5 Notification
October 2023 HAA5 Notification
January 2024 HAA5 Notification
April 2024 HAA5 Notification
DBP Test Results – March 2024Public Notification of Haloacetic Acid (HAA5) Maximum Contaminant Level (MCL) Violation – April 4, 2024
July 2024 HAA5 Notification
DBP Test Results – June 2024*
October 2024 HAA5 Notification
DBP Test Results – September 2024*
January 2025 HAA5 Notification
DBP Test Results – December 2024*
April 2025 HAA5 Notification
DBP Test Results – March 2025*
July 2025 HAA5 Notification
DBP Test Results – June 2025*
* Important: The regulatory limit for DBPs is set as an annual average level (known as the “LRAA”) of 60 parts per billion (ppb) for HAA5 and 80 ppb for TTHMs. A single reading above 60 ppb for HAA5 or 80 ppb for TTHM does not constitute a regulatory violation or health hazard.