The Three Waters reform programme (also known as Three Waters) is a public infrastructure restructuring programme launched by the Sixth Labour Government to centralise the management of water supply and sanitation in New Zealand. It proposes shifting control of stormwater, drinking water and wastewater management from the country's 67 local councils to four new publicly-owned regional entities by July 2024. Details of the proposed reforms were announced in October 2021. The Three Waters reforms were criticised by several mayors and the opposition National and ACT parties.