1) Promoting chlorine-based point-of-use water treatment in Indonesia required understanding local boiling traditions and overcoming perceptions that boiling was the only safe method.
2) Using an ecological framework, factors at multiple levels influenced adoption of the new technology, including social networks, community institutions, gender norms, and exosystem events.
3) Lessons included gaining government support, ensuring product availability, mobilizing communities, and addressing individual motivations like taste and smell through promotion and advocacy across different systems.