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Massachusetts Water Rebates

Boston, Massachusetts Water Rebates

Boston Water and Sewer Commission (BWSC) runs a Stormwater Grant and Credit Program for customers who reduce runoff from their property. Grants help offset the cost of green stormwater infrastructure like rain gardens, and credits lower your ongoing stormwater charge. Rain gardens planted with native plants qualify. The program expanded in April 2024.

Up to $4,000 grant + up to 40% credit

Stormwater Grant and Credit Program

Open the official program site

How to apply

  1. Confirm you are a BWSC stormwater customer in Boston
  2. Review the sample applications to understand requirements
  3. Obtain any local, state, and federal permits the project needs
  4. Submit the DocuSign application for a grant or a credit
  5. Build the approved practice and submit documentation to receive the grant and ongoing credit

What you'll need

  • BWSC account information
  • Project plans for the green stormwater practice
  • Required local, state, and federal permits
  • Completed DocuSign grant or credit application
  • Supporting documentation and receipts

Pollinator Patch can help: It picks Boston-area natives suited to a rain garden, designs an HOA-friendly layout that supports stormwater management, and assembles the plant list and project documentation for your BWSC application.

Avoid these mistakes

  • Don't build before you submit the application and secure required permits. BWSC reviews projects against its stormwater goals.
  • Don't use the wrong form. New and existing practices have separate applications.
  • Don't skip the planting plan. Rain gardens qualify when they use native plants that support stormwater management.

Boston Water Rebate FAQs

How much does the Boston stormwater program pay?
BWSC offers grants to offset green stormwater infrastructure costs (our records show up to $4,000) plus credits of up to 40% off your stormwater charge, which is up to 30% for an approved practice plus 5% for education (Boston Water and Sewer Commission, verified June 2026).
Do rain gardens qualify?
Yes. Rain gardens are eligible green stormwater infrastructure, and rain gardens planted with native plants qualify for both the grant and the stormwater credit.
Who is eligible?
BWSC stormwater customers in the City of Boston. The credit reduces your ongoing stormwater charge, and the grant helps offset project costs.
Do I need permits before I build?
Yes. You must obtain all local, state, and federal permits required for the activity, and there are separate applications for new and existing practices.

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Programs change throughout the year. If something here is out of date or wrong, tell us and we'll check it against the provider.

We compile these programs from utility and city pages, and not every amount here has been independently confirmed. Program details also change throughout the year. Always verify requirements, amounts, and eligibility directly with your water utility before starting work. Pollinator Patch is not affiliated with any rebate program and does not guarantee approval.