Riviera West is a planned and unincorporated community in Lake County, California, lying within the Soda Bay census-designated place boundaries.

It is located on the northern slope of Mount Konocti, east of the Riviera Heights subdivision.

[3] Most of the soils underlying the subdivisions are recent pyroclastic deposits that date from the Pleistocene or Holocene.

As of October 2005 the company was not allowing any new connections, but was planning to upgrade storage capacity.

[6] In 2009 the state fined the Riviera West Mutual Water Company almost $4 million for failing to submit monitoring reports between January 2004 and July 2007.