Irrigation Dos & Don'ts


  • Water after the sun has gone down to avoid evaporation. Set sprinklers to run between 7:00 p.m. and 5:00 a.m.
  • Use low-angle sprinklers that create drops of water to avoid evaporation losses.
  • Use proper water pressure to prevent misting, which is the result of pressure being too high and can lead to evaporative losses.
  • Use hydro zoning - watering needs grouped by types of landscaping, lighting, and soils.
  • Adjust your watering schedule seasonally. Less in spring, fall, and cooler weather.
  • Use a moisture sensor to determine watering needs.
  • Use an in-line filter to prevent system clogs.
  • If supported, cycle the irrigation system - 4 minutes on, 4 minutes off, and repeat this cycle three times.
  • Use native plants to reduce watering needs.
  • Use micro-irrigation techniques, such as drip, trickle, bubblers, and/or micro-spray jets and sprinklers.
  • Consider allowing your grass to go dormant during drought conditions. Established grass doesn't die during dormancy.
  • Use a backflow prevention valve to avoid contaminating drinking water supplies (required in Ramsey).
  • Hold onto the design layout so future projects do not lead to necessary system repairs due to accidentally digging up water lines.


  • Water too much (only need to water the root zone, which is about 5 to 8 inches deep for most common grasses).
  • Over-fertilize.
  • Use broken or impacted sprinklers.
  • Water hardscapes like driveways, sidewalks and building walls.