LINCOLN, Neb. (AP) — Lincoln’s mayor is calling on residents to voluntarily conserve water for the rest of the summer by adhering to outdoor water use limits.

Mayor Chris Beutler says the restriction is voluntary, but noted that the city is about two inches below normal rainfall for the year and temperatures remain high.

Beutler is asking residents with street addresses ending in even numbers to limit outdoor water use — including watering lawns and washing vehicles — to Wednesdays, Fridays and Sundays. Those with addresses ending in odd numbers are asked to limit their outdoor water use to Tuesday, Thursdays and Saturdays.

The mayor’s water conservation task force also recommends, among other things, that residents water lawns during the coolest part of the day and refrain from watering when it’s windy.