Background: Millions of villagers in Bangladesh drink water which exceeds the Bangladesh Arsenic (As) standard of 50 micrograms per liter. Exposure to elevated levels of inorganic As is associated with cancers of the skin, bladder, and lung, developmental effects, cardiovascular disease, and skin lesions. As mitigation typically involves testing the well water without providing resources to address health concerns or give advice on mitigation options. We sought to evaluate community level intervention strategies for As mitigation in Bangladesh. Method: We conducted two randomized controlled trials (RCT) in Singair and Shibalaya, Bangladesh. In the first cluster of 1000 households, we evaluated the effectiveness of having community members versus outside representatives disseminate As education and conduct water As testing using urinary As at baseline and follow-up. In the second cluster RCT of 450 households, we evaluated the effectiveness of community and household level As educational interventions on increasing the adoption of a fee-based As testing program. Our primary outcome in this RCT was a household purchasing As test for their primary drinking water source. Results: In the first RCT, we found that overall 53% of respondent using As contaminated wells (>50?g/L), at baseline switched after receiving the intervention. When we stratified by those residing in a village where less than 60% of wells in use were As unsafe, UNICEF cutoff for well switching as a mitigation option, 74% of study households in the community tester villages, and 72% of households in the outside tester villages reported switching to an As safe drinking water source. These results were confirmed by a 30% reduction in urinary As between baseline and follow-up for those who reported switching to safe wells (p<0.0001). In the RCT of the fee-based As testing program, we found that 93% of households that received the community and household level As interventions purchased an As test, in comparison to only 53% in the control group. Finding: These low cost easily to implement community based arsenic educational interventions were effective in reducing arsenic exposure and promoting the use of a fee-based arsenic testing program in communities in rural Bangladesh.