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Ontario WaterWise

Imported Water Pipeline Shutdown

 Metropolitan Water District will temporarily suspend water deliveries to the Rialto Pipeline, from April 23-28, to allow the Department of Water Resources to make repairs to this pipeline. During this timeframe customers are being asked to reduce their water use. Here are some water conservation tips:

  • Wash only full loads in the dishwasher and washing machine
  • Turn off the water while brushing your teeth
  • Do not leave water running while washing the dishes

Please visit for more water conservation tips.

Wyland National Mayors Challenge

Make your pledge to conserve water at It's free and only takes 1 minute. Make your pledge to conserve water and save energy from April 1-30 and you can win $5,000 toward your annual utility bills, water saving fixtures, and hundreds of prizes.

Inland Empire Landscape Contest

Do you have a water-wise yard? Enter the Inland Empire Landscape Contest for a chance to win cash prizes. Enter the contest at Entries must demonstrate and will be judged on attractive use of water-wise landscaping, water use efficiency, and good maintenance practices. Enter between now and May 31st, 2018.

Residential Landscape Design Assistance Program

Ontario residents are eligible for free landscape design services. Residents can get a free landscape design of their yard. The program requires a $50 deposit for participation that is fully refundable if the landscape project is significantly completed within 6 months of design appointment date. Please vist for more information.

Mulch Giveaway

Ontario will be hosting free mulch giveaways on the following dates from 7AM-2PM. Residents must bring an ID, a utility bill showing proof of residence in Ontario and a containter(s) to put mulch into.

  • June 15, 2018-Galvin Park (1072 N Grove Avenue)
  • June 16, 2018-Cucamonga City Yard (1440 S Cucamonga Street)
  • September 14, 2018-Galvin Park (1072 N Grove Avenue)
  • September 15, 2018-Cucamonga City Yard (1440 S Cucamonga Street)
  • December 7, 2018-Galvin Park (1072 N Grove Avenue)
  • December 8,2018-Cucamonga City Yard (1440 S Cucamonga Street)

Please call 909-395-2633 if you have questions.

FREE Smart Controller Upgrade Program – available to qualifying Ontario Homeowners

  • Retrofit of existing irrigation controller/timer with a new "smart" controller
  • Assistance with programming the "smart" controller
  • Evaluation of how water is being used at the home and recommendations for improvement
  • Available for properties under 1/4 acre and over 1/4 acre
  • Resident must have a working sprinkler system and a non weather based irrigation controller
  • To apply, click here

FREE Landscape Evaluation

The Chino Basin Water Conservation District offers FREE outdoor water evaluations for customers living or doing business within the Inland Empire Utilities Agency boundaries. Please visit or call 909-626-2711 for more information.

FREE Sprinkler Nozzles

High-efficiency nozzles can increase your water efficiency up to 30%. Ontario residents can get up to 25 free high-efficiency nozzles by following the steps below:

  • Determine the number of nozzles and types of nozzles you need
  • Log on to , be sure to have the water account name and number handy
  • Print your voucher and take it to a participating supplier


Every Drop Counts, Keep Saving Ontario                         

Congratulations Ontario Residents and businesses! With your help, Ontario has achieved a 10% water savings since July 2016. Due to improved water conditions statewide, the State Water Resources Control Board has removed mandatory conservation targets. In response, on June 21, 2016, the City eliminated excess water use penalties. The recent water saving efforts and local water supply investments ensure that Ontario has adequate local water supply. Please keep in mind that California has entered its fifth year in a drought and Ontario is still in Stage 2 water restrictions. The goal of Stage 2 water restrictions is to save 10-20%.

 Below are Ontario’s Stage 2 water use restrictions:

  • No hose washing of sidewalks, walkways, driveways, parking areas or other paved surfaces
  • No hose washing of an automobile without a fitted shut-off nozzle
  • No public place (ie. restaurant) where food is served, shall serve water unless requested by customer
  • No person shall water outdoor landscaping between the hours of 9 AM and 4 PM
  • No person shall allow water to be applied to outdoor landscapes in a manner that causes runoff
  • No filling or refilling empty swimming pools without permission from the City
  • Newly constructed homes and buildings shall irrigate in a manner that is consistent with California Building Standards Commission and Department of Housing & Community Development
  • Prohibit irrigating turf or ornamental landscape during and within 48 hours following measurable rainfall
  • Operators of hotels and motels must provide guests with the option of choosing not to have towels and linens laundered daily and prominently display notice of this option



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Ontario Municipal Utilities Company
1425 South Bon View Avenue
Ontario, CA 91761 

For questions please call (909) 395-2605 or email Public Works.

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