If you have a backflow device (required under city code for sprinkler systems) now is the time to have it tested (click here for more information).

Prevention now will keep your system operating efficiently and save water.

• Close all manual drains (they were probably left open when sprinkler system was drained last fall).
• Slowly open the main valve, allowing the piping between it and the backflow prevention device to fill with water.
• Pressurize the mainline between the backflow device and the control valves.
  • Have one of the control valves open while you do this, so air trapped in the piping can escape through the sprinkler heads.

• Have the backflow prevention device tested by a state-certified tester. Contact Public Works (503-537-1289) for assistance.  
• Run the entire sprinkler system, one zone at a time. As you do this, check the following:
  • Signs of leaks, damage to sprinkler heads or pipe which occurred over the winter. Repair and replace as needed.
  • Spray patterns. Adjust your sprinkler heads so they water your landscape.
  • Sidewalks don't get thirsty. Make sure the spray isn’t blocked by plants.
  • Clean clogged nozzles and sprinkler heads.

• Adjust your sprinklers  - don't water the sidewalk. 
• Water early in the morning (before 10am) or in the evening (after 6pm) to minimize evaporation. 
• Set it, but don’t forget it!  Manual or automatic - adjust your watering schedules for the season. 
• Water established lawns about one inch per week. How much? Check the Weekly Watering Number.
• Inspect your irrigation system for leaks, broken lines or blockages.  
• Replace turf with native plants and grasses and rain gardens.
• Group plants. Creating “watering zones” in your garden will give each group the water it requires.
• Add a shut-off nozzle to your garden hose.
• Adjust your mower to a higher setting. Taller grass provides shade to the roots.
• Apply the amount of water slowly, allowing your soil to absorb. 

• Look for perpetual damp spots in your landscape as these might indicate a leak or broken line that will have to be fixed.
• Get your backflow device checked. This is required each year by city code and state statute.
• Winterize - empty any water and turning it off for the season (this includes drip systems too!).  
• Insulate outdoor pipes.
• Empty and disconnect your garden hoses from outdoor faucets.
• Clear debris from your gutters and downspouts so overflow from storms doesn't flood your lawn.