The number of sprinklers per zone depends primarily on your water system's flow rate (GPM) and pressure (PSI), as well as the type of sprinkler heads used.
- Typically, a zone can accommodate between 5 to 10 sprinkler heads, depending on the watering radius and type of heads (spray or rotary)
- For example, if your home's water capacity is 10 GPM and each sprinkler head uses about 3 GPM, you could run about 3 heads per zone
- Spray heads usually require more heads per zone (around 8 to 10) due to their shorter radius, while rotary heads cover larger areas and typically need fewer heads (about 5 to 6) per zone
- The water pressure affects how many heads can run simultaneously; at 35 PSI, a rotor head might use around 3 GPM, limiting the number of heads per zone accordingly
- Advanced systems like Irrigreen use technology to allow just one sprinkler head per zone by digitally adjusting spray patterns, but traditional systems require multiple heads for full coverage
In summary, most traditional sprinkler zones have about 5 to 10 heads, but the exact number depends on your system's water flow and pressure, as well as the sprinkler type and lawn layout. Consulting an irrigation professional or using tools like sprinkler zone calculators can help determine the precise number for your setup
