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Our Company

Promoting a sustainable waste management and circular economy in Indonesia

Sustainable Waste Indonesia (SWI) or PT Sendang Bumi Wastama, your partner in Indonesian waste management innovation! Established in Jakarta, our journey began in 2014, driven by a commitment to harmonize global waste solutions with Indonesia’s challenges. At SWI, we champion local knowledge and best practices, advocating for a paradigm shift towards sustainability, embracing the Reduce, Reuse, and Recycle (3R) principles, and fostering partnerships across communities, government, and the private sector. From transforming regulatory frameworks to promoting behavior change for sustainable production and consumption, we’re dedicated to create a greener and cleaner future. 

Proudly affiliated with the Indonesia Solid Waste Association since 2015. Our name, Sendang Wastama, embodies our vision—’Sendang’ (Javanese) symbolizing the springs as a sustainable life on earth and ‘Wastama’ (waste-utama) highlighting waste as a cornerstone of quality living.”



The comprehensive array of projects showcases the pivotal role in catalyzing sustainable waste management practices across Indonesia. From pioneering academic papers and legal frameworks on waste utilization in the cement industry to conducting meticulous research on waste composition and generation rates in various Indonesian cities, SWI’s expertise spans technical assistance, field trials, and institutional capacity assessments. 

Promoting Local Knowledge

Our partnership with both international allies and local stakeholders highlights a comprehensive strategy aimed at attaining zero waste leakage and implementing circular waste management practices. This approach prioritizes not just technological progress, but also takes into account socio-economic factors and environmental sustainability by promoting local knowledge expertise. SWI is dedicated to promoting responsible sourcing criteria, supporting small and medium-sized enterprises (SMEs), and advancing Indonesia’s transition towards a circular economy model.


We firmly believe that the pivotal role played by facility workers and downstream suppliers is crucial to the program’s success. Consequently, they should not only benefit from increased income resulting from a higher quantity of waste sold/sorted but also share in the broader positive outcomes by enhancing safety, environmental practices, human rights, and the circular economic ecosystem.


for Recycling

SWI’s collaboration with FUREC marks a significant step towards advocating for sustainable packaging solutions. By addressing the challenges associated with MLP demand, collection, and sorting, the partnership aims to create a more sustainable future for the packaging industry. Through a concerted effort involving industry stakeholders, government bodies, and consumers, the vision of a majority population of recyclable MLP can become a reality, ushering in a new era of environmental responsibility and resource conservation.

Energy Recovery
from Waste

In the collaborative journey since 2019, SWI and Material Recovery Facility Bakti Bumi in Sidoarjo have achieved remarkable milestones in waste management. Through research and development efforts, they have implemented locally adaptable technology, producing Refused Derived Fuel (RDF)

Material Recycling
Value Chain

The collaborative efforts between SWI, Nestle Indonesia, IPR, and plastic recycling SMEs in Indonesia stand as a testament to the power of partnerships in driving positive change. By combining environmental stewardship with economic development, this initiative not only addresses the pressing issue of plastic waste but also sets a precedent for future endeavors in sustainable business ecosystems. As the success of the partnership continues to unfold, it serves as an inspiring model for other regions and industries grappling with the challenges of plastic pollution.

Plastic Waste Collection

Collaboration of PT. Nestle Indonesia, Sustainable Waste Indonesia, and Indonesia Plastic Recycler.

Since its inception in 2021, our collaborative effort has persevered, driven by the dual mission of expanding plastic waste collection for a circular economy while enhancing traceability for responsible sourcing. This initiative engages directly with over 30 small and medium enterprises (SMEs) across Java Island, forging a network that includes aggregators, recyclers, and waste facility operators. Together, these partners have amassed tens of thousands of additional tons of plastic, spanning a variety of types from rigid to film, monolayer to multilayer, transforming them into valuable products.


Djoko Heru Martono

Senior Specialist​

With over 35 years of experience in solid waste management, Heru has worked extensively with local governments, the Ministry of Public Works, the Ministry of Environment, UNDP, and various other institutions. He became a part of the SWI team in 2014 following his tenure as a senior researcher at the Ministry of Research and Technology Application (BPPT). His expertise spans from waste reduction to landfill management, covering both technical engineering aspects and broader management strategies at local and national levels. After retiring from BPPT, he continued his involvement with SWI while also serving as an expert for national and international organizations, including the World Bank Office Jakarta, JICA, Ministries of Public Works and Housing Settlement, GIZ, CDM Smith, etc.

Dini Trisyanti

Director – Co founder Senior Specialist​

Dini is a specialist in solid waste management, boasting over 19 years of experience providing technical support for environmental initiatives. Her passion for municipal solid waste management dates back to her master’s thesis in 2004. Since then, she has been actively engaged in projects with various organizations, including The World Bank, ESP-USAID, Unilever, Danida, and GIZ, collaborating closely with both ministerial and local government bodies in Indonesia. In 2014, she established her own research and consulting firm, focusing on sustainable waste management and resource efficiency. At SWI, she plays a pivotal role in directing programs and projects, ensuring the quality of SWI’s work, and nurturing relationships with industry players, government entities, and other stakeholders.

Rangga Akib

Senior Engineer​

After completing his master’s degree, Rangga embarked on a career in environmental engineering at Arcadis Germany. Upon returning to Indonesia in 2013, he transitioned to a role at GIZ, specifically for the V-NAMAs Project (Vertically Integrated Nationally Appropriate Mitigation Actions). This initiative focuses on reducing greenhouse gas emissions from the municipal solid waste management (MSWM) sector. Additionally, Rangga has served as a team leader at the Ministry of Public Works and Housing, spearheading the development of municipal solid waste master plans for various cities in Indonesia. Since joining the SWI team in 2018, he has led numerous research and implementation projects, collaborating closely with associations, industries, brands, and other stakeholders.

Our Working Grounds

Materials Recovery Facilities
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Aggregators and Recyclers (SMEs)
RDF Producers
RDF Offtakers