Editing Pasadena, California (section)

===Water and power ===
[[File:Pasadena-waterpower-fountain.jpg|thumb|Water and Light Fountain at the historic [[Glenarm Power Plant]]. Designed by Harold H. Lewis in 1938.]]
The city Water and Power Department (PWP) provides services to an area encompassing {{cvt|60|km2|sqmi|order=flip}} that includes areas outside of the city proper, including unincorporated areas of southern Altadena, East Pasadena, Chapman Woods, and East San Gabriel. PWP has operated the [[Glenarm Power Plant]] for over 110 years.

Pasadena created the Pasadena Municipal Light and Power Department in 1906. Expanding continued and more generating capacity was expanded and the city then offered power to commercial customers in 1908, and bought out [[Southern California Edison]]'s Pasadena operations in 1920.<ref name="power">{{cite web |url=http://www.cityofpasadena.net/waterandpower/Our_History/ |title=City of Pasadena Department of Water and Power |publisher=www.cityofpasadena.net |access-date=January 8, 2012 |archive-date=June 30, 2014 |archive-url=https://web.archive.org/web/20140630220248/http://cityofpasadena.net/waterandpower/Our_History/ |url-status=dead }}</ref> In 1911, the city began condemnation actions against a number of small, local water companies. In 1912, the Water Department was created; in 1913, it began actual operations. The city continued to acquire small, local water companies for several decades afterwards, usually ''en toto'', such as the Pasadena Lake Vineyard and Land Company, and sometimes in part, such as Las Flores Water Company's southern portions and San Gabriel Valley Water Company's operations in the southern reaches of Pasadena. In 1967, the Water Department and the Light and Power department were consolidated into the "Pasadena Water and Power Department" (PWP).<ref name="power"/>

It operates a number of water wells, has a spreading ground for the capture of surface water from the Arroyo Seco, and purchases surface water from MWDSC. A number of wells on the west side of the service area had become contaminated with volatile organic chemicals and perchlorate and had to be shut down several years. A treatment plant was built to remove these chemicals which began operation in July 2011.{{citation needed|date=July 2023}}