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What We Do

We collaborate with volunteers, business partners, and government leaders to take action and make Massachusetts a cleaner, greener place to live, work, and play. Get involved today.


3rd Annual Watertown-Cambridge Greenway Spring Cleanup

Saturday, March 14, 2026
10:00 am12:00 pm
Watertown, MA

Come and volunteer for some spring cleaning on the Watertown-Cambridge Greenway! Meets on-site at the trail intersection between Watertown Mall and 490 Arsenal Way (with bench and bike racks). From there, one crew will work westward toward the Watertown end, and the other will work eastward toward Fresh Pond in Cambridge. Register to get reminders and event updates (and help us ensure we have enough snacks!). Rain date is March 21st, same time, same place.

Meet up location: The trail intersection between Watertown Mall and 490 Arsenal Way (with bench and bike racks)

  • Number of Cleanup Events Hosted in 2025

    125+

  • Volunteer Hours in 2025

    25,000+

  • Pounds of Litter Removed in 2025

    300,000+

  • Tons of Litter Removed in 2025

    100+

  • Value of Volunteer Services in 2025

    $750,000+

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