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HD 3969

An Act relative to grey water

194th Legislature (2025-2026) Introduced by David DeCoste

Massachusetts bill allows residential greywater capture and reuse for irrigation and toilets, reducing water consumption while establishing treatment standards and regulatory oversight.

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Bill Summary · HD 3969

Legislative bill overview

HD 3969 would allow residential properties in Massachusetts to capture, treat, and reuse greywater (wastewater from sinks, showers, and washing machines) for non-potable purposes like toilet flushing and irrigation. The bill establishes standards for greywater systems, including treatment requirements and safety protocols, while creating a regulatory framework for their installation and operation.

Why is this important

Greywater reuse can reduce household water consumption by 30-50%, lowering both water bills and strain on municipal water systems—a growing concern as climate change increases drought risk. The bill addresses environmental sustainability while potentially offering cost savings to homeowners, though it requires significant upfront investment in system installation.

Potential points of contention

  • Regulatory burden: Establishing new permitting and inspection requirements could create administrative costs for municipalities and delays for homeowners seeking to install systems
  • Public health concerns: Improper greywater treatment or storage could create health hazards; standards must balance safety with practicality to gain public confidence
  • Equity and access: High installation costs may limit adoption to wealthier homeowners, raising fairness questions about who benefits from this environmental initiative
  • Existing infrastructure impact: Some wastewater treatment facilities depend on consistent inflow volumes; reduced household water use could affect system operations and cost-recovery models

Compiled from official sources — confirm details with the bill’s official record.

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