UCLA Journal of Environmental Law and Policy

Rainwater harvesting is increasingly being turned to as a viable water conservation measure in the face of increasing water shortages. Legislatures at local, state, and national levels have begun implementing legislation that regulates rainwater harvesting; in some cases, governments choose to make the practice mandatory. This article examines four mandatory rainwater harvesting policies implemented in Australia, India, and the United States. The article summarizes the relative success of each policy’s adoption, and then moves on to discuss the impact of the policy on overall water conservation. In comparing the relative success of the policies, one finds that while financial investment plays an important role in determining the impact of the programs, other factors, such as the leniency of the mandate, cost to consumer, and support from non-governmental organizations play an important role in determining whether the policies are adopted. Furthermore, policymakers can encourage greater water conservation by incentivizing behavioral change and creating more robust financial incentives.