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Ontario WaterWise

Mayor's Challenge

Join us in celebrating Earth Month by taking part in the National Mayor's Challenge for Water Conservation from April 1-30, and tell us ways you plan on saving water, energy, and more. Enter to win prizes through April 30th by visiting

Landscape Transformation Program-$3.00/square foot

Ontario residents and businesses are eligible to receive $3.00/square foot for replacing turf with drought tolerant plants. Interested residents can visit for more information and to apply. The rebate is based on availability of funding. Please contact 909-395-2614 if you have any questions. Please refer to the Landscape Transformation Program flyer below for more information.

Residential Landscape Irrigation Tune-up Program

The Residential Landscape Irrigation Tune-up Program will provide basic irrigation repairs at no cost to Ontario residents. Please contact Amy Bonczewski at 909-395-2614 or [email protected] for more information or to sign up.

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 visit 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 container(s) to put mulch into.

  • April 12, August 16, December 6 2019-Galvin Park (1072 N Grove Avenue)
  • April 13, August 17, December 7 2019-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.



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 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 [email protected]

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