From May 1 through September 30, water before 10 a.m. or after 6 p.m. to reduce water loss to evaporation. This new outdoor landscaping code took effect in 2026. Learn more on the Drought Program webpage. Detailed rules to prevent water waste can also be found in Boulder Municipal Code 11-1-25.5.
Holiday Closures
In observance of the Memorial Day Holiday on Monday, May 25, the City of Boulder is adjusting its operations schedules.