Return to Government

Ontario WaterWise

Help your Trees Survive the Drought

It is important to water your trees during the drought even if you have reduced the amount of water used for irrigating your turf.  Please visit the following link to learn more about how to properly water a tree. Here are a few helpful tips:

  • Young trees need to be watered twice week (about 5 gallons) while mature trees need to be watered once a week in several places (1-1.5 inches of rain).
  • Water the drip zone area directly beneath the foliage.
  • Water early in the morning or after the sun has set.

Inland Empire Landscape Contest Winner

Inland Empire Landscape Contest Winner

Ontario Municipal Utilities Company is proud to announce that Chris May is a local winner of the Inland Empire Landscape Contest. Mr. May was one 168 entries into the 2016 contest. To learn more about the Inland Empire Landscape Contest please visit

Landscape Design Seminar

The Chino Basin Water Conservation District will be hosting a Landscape Design Seminar on August 20th from 9am-12pm. Learn how to identify and execute the critical steps to designing a watershed wise landscape including: contouring for rainwater capture, creating a list of climate-appropriate plants, developing a site plan using design principles. The course fee is $20 and partsipants must register at or call (909)626-2711.

Every Drop Counts, Keep Saving Ontario

Congratulations Ontario Residents and businesses! With your help, Ontario has achieved a 20% water savings since June 1, 2015. 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


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

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

Email Alerts

Sign up for personalized email alerts.

Stay Connected

Stay informed with the latest updates.