首页 60 Years Key Milestones in Mesa Water History KEY MILESTONES IN MESA WATER HISTORY From its early roots when our community’s water came from natural underground springs via artesian wells, to the present, where we provide clean, safe water to more than 110,000 residents, Mesa Water is positioned to continue to serve generations to come. Below are some of the key milestones in Mesa Water history. 1960 On January 1, Costa Mesa Water District commenced operations. 1969 The unveiling of new white hydrants signaled a commitment to local water sources. 1990 Completion of Reservoir 1 was one of the first steps in becoming 100% local and reliable. 2012 Opening the Mesa Water Reliability Facility (MWRF) has allowed 100% locally-reliable water supplies to its service area. 2020 Mesa Water celebrates 60 years of being one of the most efficient water agencies in Orange County.