Dakota Times

Odd/even and time-of-day watering restrictions are in effect May 1 through September 30 each year. Water only as needed on odd-numbered days if your house number ends in an odd number, or even-numbered days if your house number ends in an even number. Also, watering is only allowed before 11 a.m. or after 5 p.m. - watering during the heat of the day wastes water due to evaporation.

If you violate this ordinance, you could be issued a warning or even a ticket.

More information, including some exceptions...

Original source can be found here.