Proposition 72, also known as Prop 72, was a

California ballot proposition In California, a ballot proposition is a referendum or an initiative measure that is submitted to the electorate for a direct decision or direct vote (or plebiscite). If passed, it can alter one or more of the articles of the Constitution of Cal ...

and proposed state constitution amendment intended to exclude

rainwater capture Rainwater harvesting (RWH) is the collection and storage of rain, rather than allowing it to run off. Rainwater is collected from a roof-like surface and redirected to a tank, cistern, deep pit (well, shaft, or borehole), aquifer, or a reservoir w ...

systems completed on or after January 1, 2019 from property tax assessments. The measure passed in the June 2018 California primary elections. Supporters of the measure believed it would encourage more homeowners to install these systems and would help conserve water. There was no opposing argument ever submitted to the Secretary of State. Save California Water ran the campaign supporting Prop 72. The amendment was sponsored by Senator

Steve Glazer Steven Mitchell Glazer (born August 10, 1957) is an American politician and former political advisor serving as a member of the California State Senate from the 7th Senate District, which includes most of Contra Costa County and eastern portio ...

in the

California State Legislature The California State Legislature is a bicameral state legislature consisting of a lower house, the California State Assembly, with 80 members; and an upper house, the California State Senate, with 40 members. Both houses of the Legislatur ...

. The

California Democratic Party The California Democratic Party is the affiliate of the Democratic Party in the U.S. state of California. It is headquartered in Sacramento. With 43.5% of the state's registered voters as of 2018, the Democratic Party has the highest number o ...

supported the amendment. Other supports of the amendment include

League of California Cities The League of California Cities is an association of cities within the state of California, founded in 1898. Most of the state's 482 cities are represented in the league. The League publishes ''Western City'', a monthly magazine, and holds an annu ...

Save the Bay Save The Bay is a nonprofit organization dedicated to preserving San Francisco Bay and its related estuarine habitat areas. Founded by Catherine Kerr, Sylvia McLaughlin, and Esther Gulick in 1961, the organization grew into a body that not o ...

, Planning and Conservation League,

Trout Unlimited Trout Unlimited (TU) is a US non-profit organization dedicated to the conservation of freshwater streams, rivers, and associated upland habitats for trout, salmon, other aquatic species, and people. It is headquartered in Arlington, Virginia. T ...

, and Rural County Representatives of California. Results

References

Referendums in the United States 2018 in California {{California-election-stub