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S608 • 2025

An Act relative to combined sewer overflows

An Act relative to combined sewer overflows

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The official status still shows this bill as active or still awaiting another formal step.

Sponsor
Patricia D. Jehlen
Last action
2026-07-09
Official status
Accompanied a new draft, see S3154
Effective date
Not listed

Plain English Breakdown

Using official source text because the generated explanation was unavailable or could not be confirmed against the official bill text.

An Act relative to combined sewer overflows

An Act relative to combined sewer overflows By Ms.

What This Bill Does

  • An Act relative to combined sewer overflows By Ms.
  • Jehlen, a petition (accompanied by bill, Senate, No.
  • 608) of Patricia D.
  • Jehlen relative to combined sewer overflows.

Limits and Unknowns

  • This entry is temporarily using official source text because the generated explanation could not be confirmed against the official bill text during the last sync.

Bill History

  1. 2026-07-09 Senate

    Accompanied a new draft, see S3154

  2. 2026-02-26 Senate

    Reporting date extended to Tuesday June 30, 2026

  3. 2025-06-10 Joint

    Hearing scheduled for 06/17/2025 from 01:00 PM-05:00 PM in A-1

  4. 2025-02-27 Senate

    Referred to the committee on Environment and Natural Resources

  5. 2025-02-27 House

    House concurred

Official Summary Text

An Act relative to combined sewer overflows
By Ms. Jehlen, a petition (accompanied by bill, Senate, No. 608) of Patricia D. Jehlen relative to combined sewer overflows. Environment and Natural Resources.

Current Bill Text

Read the full stored bill text
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Bill S.608

Chapter 21 of the General Laws, as appearing in the 2022 Official Edition, is hereby amended by adding the following section:

Section 27B

a) As used in this Section, the following words and phrases shall have the following meanings unless the context clearly requires otherwise:

“Combined Sewer System” is a wastewater collection system of a municipality or of a Publicly Owned Treatment Works that conveys sanitary wastewaters (domestic, commercial, and industrial wastewaters) and storm water through a single-pipe system to a treatment plant.

“Combined Sewer Overflow” is a discharge or release from a Combined Sewer System directly or indirectly to a water of the commonwealth at a point prior to a Publicly Owned Treatment Works Treatment Plant.

“Publicly Owned Treatment Works” is a treatment works as defined by Section 212 of the Clean Water Act that is owned by a state or municipality as defined by Section 502(4) of the Clean Water Act, which includes the treatment works of the Massachusetts Water Resources Authority. This definition includes any devices and systems used in the storage, treatment, recycling, and reclamation of municipal sewage or industrial wastes of a liquid nature. It also includes sewers, pipes, and other conveyances that convey wastewater to a sewage treatment plant.

“Publicly Owned Treatment Works Treatment Plant” is that portion of the Publicly Owned Treatment Works that is designed to provide at least secondary treatment, including recycling and reclamation, of municipal sewage and industrial waste. That includes the Massachusetts Water Resources Treatment Plant at Deer Island.

“Untreated Combined Sewer Overflow” is a discharge or release that does not include at least the removal of solids and treatment to deactivate bacteria.

b) Beginning on January 1, 2035, in the Massachusetts Water Resources Authority sewer service areas set forth in Acts of 1984, chapter 372, Section 8(c), there shall be no untreated Combined Sewer Overflow in any 25-year 24-hour storm event or smaller storm event.

c) Within 18 months, the Department of Environmental Protection shall adopt regulations to implement this Section that shall include, but not be limited to, the definition of a 25-year 24-hour storm event, which it shall update from time to time as the climate changes, and a definition of Combined Sewer Overflow treatment that shall include at a minimum removal of solids and treatment to deactivate bacteria, which it shall update from time to time as technology changes.

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