Did You Know?

Monte Vista Water District owns 19.4 million gallons per day of capacity in the Water Facilities Authority treatment plant, located in the City of Upland.

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Your Water District

San Luis ReservoirSan Luis Reservoir, half-way along the California Aqueduct, at low capacity

Customer Service

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The Customer Service Department of the Monte Vista Water District values working as a team to provide the highest quality service to our customers, demonstrating courtesy, respect, efficiency and diligence.

Normal Business Hours

  • Monday thru Thursday: 7:30am - 5:30pm
  • Friday: 8:00am - 5:00pm
  • Saturday, Sunday, Holidays: CLOSED

Customer Service Contact Information

 Phone: (909) 624-0035
 Fax:(909) 624-4725
 Address:10575 Central Avenue
Post Office Box 71
Montclair, CA 91763