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Sustainable Waste Indonesia (SWI) or PT. Sendang Bumi Wastama is an Indonesian company established in Jakarta, February 2014, dedicated to bridge the global waste management today with Indonesia challenge and context as well as to promote local / indigenous knowledge and best practice. We underline the importance of paradigm shifting in Indonesia towards sustainable service delivery, 3R principles, and partnership of community – government – private sector, which includes transformation of regulatory framework, financing scheme, program approaches, and even behavior change towards sustainable production and consumption.

SWI is a company member of Indonesia Solid Waste Association since 2015

Sendang Wastama, Sendang (Javanese) is water spring, a symbol of sustainable life on earth. Wastama (waste-utama) implies that waste is a primary aspect of quality of life


Djoko Heru Martono

Senior Specialist​

Mr. Martono has over 35 years working in solid waste management area with local governments, Ministry of Public Works, Ministry of Environment, UNDP, and other institution. He joined SWI team since 2014. As a former senior researcher in Ministry of Research and Technology Application (BPPT), his experience and network ranges from waste minimization up to landfilling, from basic engineering up to management aspect, and from local municipal level to national strategy level. After his retirement from BPPT, he joined SWI team since 2014 while also working as experts in national and international organization, including World Bank Office Jakarta, JICA, Public Works and Housing Settlement Ministries, GIZ, CDM Smith, etc.

Dini Trisyanti

Director – Co founder Senior Specialist​

Ms Trisyanti is a solid waste management specialist with over 19  years of experience in technical assistance for environmental programs. Her concern and interest in municipal solid waste management began with her master’s degree thesis work in 2004. After graduated, she had been involved in solid waste management related project within The World Bank, ESP-USAID, Unilever, Danida, GIZ, as well as ministerial and local governments of Indonesia. She started her research and consultancy firm in 2014 focusing on sustainable waste management and resource efficiency. Within SWI, she give direction of programs/projects, involves deeply in the quality assurance of SWI’s work, and maintain network/relationship with the industry, government, and other stakeholders.

Rangga Akib

Senior Engineer​

After finishing his master study, Mr. Akib was working at Arcadis Germany in the field of environmental engineering. Following his return to Indonesia in 2013, he has been working at GIZ for for the V- NAMAs-Project (Vertically Integrated Nationally Appropriate Mitigation Actions), which aims at reducing GHG emission from municipal solid waste management (MSWM) sector. Mr. Akib has also been working for Ministry of Public Works and Housing, as team leader to develop municipal solid waste masterplan for various cities in Indonesia. He has joined SWI team since 2018 to lead several researches and implementation projects, collaborating with associations, industries, brands, and other stakeholders.


As a consultant company
we are providing structured surveys, data analysis and reviews, as well as publication, software application, and useful toolkit for decision making on waste management and resource efficiency issues. We also develop or improve integrated system of waste management, feasibility studies, value chain assessment, engineering design, monitoring evaluation, and customized training support.
Our experience
Is built on and supplemented by extensive experience and high level expertise in waste management. SWI has been engaged in providing technical assistance on a wide range of recycling, circular economy and waste management issues to both public and private sectors. We worked closely with the value chain, government and clients to provide guidelines and practical tools to evaluate scenarios on improving waste management, waste technology assessment as well as baseline and feasibility studies for project implementation.


Our Working Grounds

Materials Recovery Facilities
> 0
Aggregators and Recyclers (SMEs)
RDF Producers
RDF Offtakers