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Our Commitment
We are a group of passionate individuals dedicated to enhancing social sustainability in our communities.Our mission is to promote social sustainability through initiatives that address social, economic, and environmental challenges. We aim to empower individuals and communities to build a more just and equitable society, while advocating for policies and practices that enhance social well-being, environmental stewardship, and long-term positive impact.
Our Services

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Creating Impactful Change
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At THOSS( Tharaki Hettiarachchi Organization For Social Sustainability), we are dedicated to making a difference in the lives of those in need. Through our various programs and initiatives, we strive to empower individuals and communities, providing them with the support and resources they require to thrive. Our commitment to social welfare drives us to create impactful change and foster a more inclusive society. Join us in our mission to spread hope, inspire change, and build a brighter future for all. Together, we can make a meaningful difference in the world.

THOSS Project
THOSS Visit to Shana Special Needs School
THOSS visited Shana Special Needs School, a small rural school in Matale, Sri Lanka dedicated to supporting children with special needs. The school may not have the resources of bigger city institutions, but it is full of laughter, curiosity, and determination.We brought along simple but important school supplies — exercise books, pens, pencils, snacks, and instrument boxes for geometry — hoping to make their learning a little easier and their days a little brighter.We are especially grateful to the teachers, whose kindness and dedication shine through in everything they do. Their patience and creativity help every student feel valued and included. A special thanks also goes to the principal, whose leadership and support make such a nurturing learning environment possible.The joy in the children’s faces reminded us that even small acts of kindness can create a big impact. In giving, we received so much more in return: gratitude, smiles, and a renewed belief in the power of community.

THOSS Brings Hope and Comfort to Wilgamdematawa

THOSS (Tharaki Hettiarachchi Organisation for Social Sustainability) had the privilege of donating a batch of new and gently used clothes to the Wilgamdematawa community in Kurunegala.
This initiative was made possible thanks to the wonderful individuals who introduced us to this inspiring community and the amazing volunteers who dedicated their time and effort to distribute the clothes at the event.
Together, we continue to build bridges of compassion and sustainability.
Research and Development
Our R&D team explores innovative, data-driven solutions for:
1. Climate change
2. Poverty reduction
3. Education and social equity.
We collaborate with universities, governments, and NGOs to develop strategies that create real, lasting impact.

Donations

At THOSS, we believe that building a fairer, healthier, and more sustainable society starts with community. While we are not currently accepting monetary donations, there are many other meaningful ways you can support our work.
We welcome contributions of clothing, sanitary products, stationery, and volunteer services — all of which go directly toward helping individuals and communities thrive. Every item donated and every hour volunteered makes a real difference, whether it’s equipping someone with the tools to learn, ensuring dignity through essential care, or providing opportunities for growth and empowerment.
By standing with us, you’re not just giving resources — you’re investing in health, education, employability, and community development. Together, we can tackle today’s pressing social, economic, and environmental challenges and build a stronger tomorrow.
Please contact us for further information.

Community Stories
"THOSS's dedication to social sustainability is truly commendable."
Prof. Ramani Hettiarachhci
"I have seen firsthand the positive impact of THOSS's initiatives on community development."
Yasas
"The work THOSS does for social welfare is inspiring and crucial."
A Teacher fromSri Lanka
Connect with Us
Feel free to connect with us for any inquiries or to learn more about our social welfare projects and initiatives.
