Join the Rich Earth Institute, Massachusetts Alternative Septic System Test Center (MASSTC) and The Green Center on October 15 & 16, 2025 for the 11th annual Rich Earth Summit, held for the first time this year on Cape Cod!
Immerse yourself in two days of learning, discovery, and collaboration, exploring urine diversion as a cost-effective way to prevent nutrient water pollution while contributing to sustainable agriculture, water conservation and climate-resilient infrastructure.
Engage in workshops, exhibits and tours highlighting urine diversion and composting systems in action—from homes and gardens to farms and community projects.
Learn more and register by September 30 at RichEarthSummit.org.
Note: A virtual Rich Earth Summit will be held on November 12-14 with participants from around the world. For more information and to register for the virtual summit, go to RichEarthSummit.org.
Planning Pathways for Urine Diversion
Wednesday, October 15, 9am–5pm
MASSTC, 4 Kittridge Road, Sandwich, MA (enter via Route 151, Falmouth)
The first day of the Summit will explore how urine diversion complements existing nutrient management strategies, offering a cost-effective and measurable tool in the toolbox for watershed protection. Speakers will discuss technological options, costs, municipal planning, and state regulations and policies. Rolling afternoon tours (free) will feature MASSTC’s installations of cutting-edge onsite wastewater systems, research projects, and innovative urine recycling technologies including urine diverting toilets and treatment tools, including:
- Vacuum flush composting system & waterless urinal installation
- Innovative/Alternative (I/A) septic systems
- Greywater system
- Brightwater Tools mobile unit of urine treatment technologies (pasteurization, freeze concentration, charcoal filtration)
- Wasted* Toilet Tour
Fertilizing the Grassroots: Ecological Sanitation in Practice
Thursday, October 16, 8am-6pm
The Green Center, 28 Common Way, East Falmouth, MA
The Green Center will host an immersive day of tours, workshops, demonstrations, and a Toilet Exhibit showcasing a diverse array of urine diversion and composting systems. Participants will explore many scales of urine nutrient reclamation in practice, from homes and gardens to community projects and farm fertilization. The day emphasizes network-building, connecting participants with national leaders in ecological sanitation and local peers to share strategies and collaborate on action steps.
6-8:30pm – Banquet at Coonamessett Farm: Harvests of the Rich Earth Summit
The Summit will culminate in a community meal to keep the conversations flowing and spark new collaborations. The evening will be emceed by Shawn Shafner, artist, educator and activist of The POOP Project. Together, we’ll engage in creative explorations of the futures we hope to cultivate for the waterways and farms that sustain us. The evening will be hosted in Coonamessett Farm’s beautiful venue space, just next door to the Green Center.
The Green Center 
Share your thoughts!