The Repository of systematic reviews on interventions in environment, climate change and health (ECH) highlights the state of evidence on interventions in major ECH topics that improve health outcomes or reduce harmful exposures. This database may also assist in identifying knowledge gaps in the area of ECH interventions in those areas. Systematic reviews are presented by main ECH topic and can additionally be easily filtered by ECH subtopic such as ambient or household air pollution. The database provides important additional information on each systematic review including on population, type of intervention and health outcome.