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Sprinkler watering grass.

Mandatory watering schedule

Assigned watering groups are mandatory for all customers.

Running your landscape irrigation system outside your assigned days is water waste and may result in a water-waste fee or citation.

It’s always a good idea to water less often than permitted and increase the schedule only if your landscape needs more water. Check below for special restrictions and seasonal watering tips.

Seasonal watering schedules
Watering Group Winter (November-February) Spring/Fall (March-April/September-October) Summer (May-August)
Watering Group: A Monday Monday, Wednesday, Friday Monday-Saturday
Watering Group: B Tuesday Tuesday, Thursday, Saturday Monday-Saturday
Watering Group: C Wednesday Monday, Wednesday, Friday Monday-Saturday
Watering Group: D Thursday Tuesday, Thursday, Saturday Monday-Saturday
Watering Group: E Friday Monday, Wednesday, Friday Monday-Saturday
Watering Group: F Saturday Tuesday, Thursday, Saturday Monday-Saturday

Additional watering restrictions

In addition to watering on your assigned days, keep the following in mind when setting a schedule on your irrigation clock:

  • From May 1 through Aug. 31, landscape watering is prohibited from 11 a.m. to 7 p.m.
  • Sprinkler watering on Sundays is prohibited.
  • Watering with a handheld hose and supervised testing of your irrigation system are allowed any time.
  • Watering new or reseeded landscapes daily for up to 30 days is allowed once per calendar year. Call 702-822-8571 before the planting takes place so we can make note of this on your water account. See more water waste exemptions.
  • Watering restrictions also apply to drip irrigation. While you may water any day of the week, watering may not exceed the maximum number of days per week allowed by the restrictions. Experts agree that running drip irrigation less frequently is much better for plants than daily watering.
  • In the summer, we recommend sprinkler watering four days per week and increasing the schedule only if your landscape needs more water.
  • For lawns, use the cycle and soak method for sprinkler watering. On your assigned watering days, water in three 4-minute cycles, with about an hour between each cycle if using pop-up sprinklers. Water for about 12 minutes each watering cycle if using rotating sprinkler heads.

Watering tips for all seasons

Use the cycle and soak method
The cycle and soak sprinkler irrigation method allows soil to absorb water slowly and reduces the risk of runoff. Here’s how it works:

  • Water 3 times a day
  • 1 hour apart
  • 4 minutes for each watering
  • Water before sunrise May through October

Don't water on windy or rainy days
Winds can send sprinkler water in unintended directions, saturating the sidewalk more than the lawn. Watering during rainy periods can cause soil over-saturation and wasteful runoff. Shut off the sprinklers on windy or rainy days and save as much as 500 gallons of water a day.

What to do if you have brown spots
If you notice brown spots in your lawn, check your sprinklers to see if any of the heads are broken or twisted. Also, check to see that your sprinklers are popping up 4 inches above the grass. You may water by hand with a hose. To break down surface tension and allow for better water absorption, add a tablespoon of liquid soap to a gallon of water and drench the brown spots with the mixture.

Winter watering restrictions

Mandatory watering restrictions limit landscape irrigation to one assigned day per week from Nov. 1 through Feb. 28. Sprinkler watering on Sundays is prohibited.

Watering on a day other than your assigned watering day is considered water waste and may result in a fee.

Winter watering tips

  • Aerate your lawn. Aeration pulls tiny plugs from the soil, allowing water to be better absorbed.
  • Bermuda grass goes dormant in the winter so it doesn't need much water. Irrigate bermuda grass just once per month November through March.
  • Avoid afternoon winds and reduce the risk of icing by watering in the midmorning.
  • Add a protective mulch on the soil around your plants to trap moisture.
  • Drip irrigation may occur any day of the the week, but must not exceed one day in winter.

Spring watering restrictions

Mandatory watering restrictions limit landscape irrigation to three assigned days per week from March 1 through April 30. Sprinkler watering on Sundays is prohibited.

Watering on days other than assigned watering days and watering during restricted hours are considered water waste and may result in a fee.

Spring drip irrigation

Drip irrigation is needed less frequently than sprinkler irrigation. During spring, we recommend that you run your drip irrigation system in a single cycle of 30 to 90 minutes, two days a week. The length of each watering should be determined by the emitter flow rate, soil type and weather conditions. See our drip watering tips for details.

If your plants appear stressed, check the soil moisture. If the soil is wet, your plants may be overwatered. Water less often or for less time.

Drip irrigation may occur on any day, but must not exceed three days a week.

Daylight savings time change

Don't forget to set your irrigation clock ahead an hour when daylight saving time begins on the second Sunday in March at 2 a.m. This also is a great time to check your clock's batteries.

Summer watering restrictions

From May 1 through Aug. 31, watering restrictions allow watering Monday through Saturday. However, sprinkler irrigation between the hours of 11 a.m. and 7 p.m. is prohibited. Water your landscape early in the morning, before sunrise, to reduce evaporation caused by wind and heat.

Sprinkler watering on Sundays is prohibited.

Watering on days other than assigned watering days and watering during restricted hours are considered water waste and may result in a fee.

Summer drip irrigation

During summer, run your drip irrigation system in a single cycle of 30 to 90 minutes, three days a week. The length of each watering should be determined by the emitter flow rate, soil type and weather conditions. Experts agree that running drip irrigation less frequently is much better for plants than daily watering. See our drip watering tips for details.

Drip irrigation may occur on any day of the week, but must not exceed six days.

Fall watering restrictions

Mandatory watering restrictions limit landscape irrigation to three assigned days per week from Sept. 1 through Oct. 31. Sprinkler watering on Sundays is prohibited.

Watering on days other than assigned watering days and watering during restricted hours are considered water waste and may result in a fee.

Fall drip irrigation

During fall, we recommend that you run your drip irrigation system in a single cycle of 30 to 90 minutes, two days a week. The length of each watering should be determined by the emitter flow rate, soil type and weather conditions. Experts agree that running drip irrigation less frequently is much better for plants than daily watering. See our drip watering tips for details.

Drip irrigation may occur any day of the week, but must not exceed three assigned days.

Standard time change

Don't forget to set your irrigation clock ahead an hour when standard time begins on the first Sunday in November at 2 a.m. This also is a great time to check your clock's batteries.