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Posted on: November 2, 2019

Cooler Temperatures Call for Less Irrigation

Hand holding hose with shut-off nozzle in use.

Residents may now water lawns between 10 a.m. and 6 p.m. on assigned watering days. Each year, time-of-day watering restrictions are scheduled to ease between Nov. 1 and April 1 so that residents may water during what is typically the warmest time of the day. It is important to avoid irrigating when temperatures approach the freezing mark, which often occurs at night.  

While time-of-day restrictions provide guidelines that optimize irrigation, it is important to know that lawns (dormant turf grass) do not require any irrigation during cooler months. Shrubs and trees need water only every 4 to 6 weeks. Irrigation systems should be turned off completely and operated manually only if there is no precipitation for more than four weeks. 

Designated watering days are assigned based on street addresses as follows: odd addresses irrigate on Sunday and Wednesday; even addresses water on Tuesday and Saturday. Watering is always prohibited on Monday, Thursday and Friday. 

Water conservation outside is just as important in the winter as it is in warmer months. See the following tips:

  • Plants that are irrigated in the evening and remain wet all night are more likely to develop fungal problems.
  • Irrigating during any form of precipitation is prohibited by city ordinance.
  • Irrigation systems should be turned off to prevent accidental activation which could cause dangerous ice on streets and walkways. 
  • If hand-washing vehicles, use a bucket and sponge; rinse with a hose using a positive shut-off nozzle.

Indoor water conservation should include the following:

  • Installation of low-flow shower heads and faucets, as well as faucet aerators to reduce water use.
  • Repairing leaks from dripping faucets and running toilets can save water and can reduce water bill.
  • Run only full loads when using the dishwasher.

Visit Irving’s Water Conservation page to learn more about water conservation.

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