TCWD Message to our Customers:

Trabuco Canyon Water District (TCWD) wants to assure our customers that the water at your tap continues to be of the highest quality and 100% safe to drink. The coronavirus disease 2019 (COVID-19) has no impact on the quality of your drinking water and there is no need to use bottled water as a substitute.

TCWD's drinking water comes from imported surface water and local groundwater sources, and is filtered and treated with chlorine before entering the water distribution system to ensure that it stays safe through our system to your home. TCWD is also taking steps to ensure that service to our customers will continue uninterrupted so your drinking water is both available and plentiful. If you have any questions, please contact us.


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In the 1930s, 1940s and 1950s, TCWD was mainly a community of summer homes. Water sources consisted of two wells, earthen reservoirs for collecting rainfall runoff and small wells and springs . During the summer and fall, as well as during drought periods, there often was not enough water.

In 1961, a group of resident pioneers pursued annexation of what is now the TCWD boundaries to the Metropolitan Water District of Southern California (MWD). These founders included: F.L. Schwendeman, Frank Waer, Nicholus West, Leonard Schwendeman, Grady Glenn, and Roy Head. Roger Howell and Alex Bowie as attorneys for the District set up the legal structure of the District. The early pioneers organized a special election for October 16, 1962 with a vote of 98 to 2. The election authorized bonds in the amount of $1,575,000 to purchase water capacity and construct pipelines and facilities.

Five cubic feet per second (cfs) capacity in the Santiago Aqueduct was purchased from Municipal Water District of Orange County (MWDOC), from MWD's supply, and necessary pipelines were constructed. Since 1984, the existing treatment plant and booster station were reconstructed and modified with initial capacity of 300,000 gallons per day (gpd) and later expanded to 3,000,000 gpd.

The District has not always used all of its capacity, so it has, from time to time, used that extra capacity to assist other water districts. This sharing benefits both districts and is common among water districts.

In 1988 the District obtained 4 cfs of water in the Allen-McColloch Pipeline. This capacity is conveyed to the District via the South County pipeline. The capacity exists at an inter tie to provide a total of 10 cfs of capacity.

In 1984 the District, in conjunction with the Robinson Ranch development, built a wastewater treatment plant with a capacity of 250,000 gpd. Expansion of the plant to 850,000 gpd was completed by 1992. The District purchased an additional 125,000 gpd of capacity in the Chiquita Wastewater treatment facility.

Completion of the Trabuco Canyon Water District's Master Plan in 1999 has aided in the District's planning for the future. Additional treatment facilities, reclaimed water storage and domestic water sources are planned and will be developed to ensure the District's capability to service its customers through build out, projected for 2030.