Town of North Kingstown | In‑Ground Sprinkler Ordinance & Irrigation Guidelines

Ordinance Requirements

To ensure safe and efficient water use, all in-ground sprinkler systems in the Town of North Kingstown must comply with the following requirements:

  • Backflow Protection – All systems must be equipped with a backflow prevention device.
  • Permit Requirement – A building permit is required for installation of any in-ground sprinkler system.
  • Rain Switch – Systems must include a rain switch device to automatically shut off during rainfall.
  • Pressure Reducing Valve (PRV) – The water distribution system must include a PRV set at or below 65 psi.
  • Flow Sensor Sprinkler Valve – Sprinkler heads must deliver no more than 5 gallons per minute (gpm) at 60 psi.

For more information, please contact the Department of Water Supply or the Building Official’s Office. Additional resources are available from the Irrigation Association.

Tips for Efficient Irrigation

The following best practices help conserve water and maintain healthy landscapes:

  • Know how to operate and adjust your irrigation controller.
  • Adjust watering times seasonally.
  • Regularly check the system for leaks and proper operation.
  • Avoid watering during windy conditions.
  • Water early in the morning to reduce evaporation.
  • Use multiple start times for sloped areas to prevent runoff.
  • Avoid watering sidewalks, driveways, and other hard surfaces.
  • Water deeply and infrequently to encourage strong root growth.
  • Use drip irrigation for trees, shrubs, and flower beds.
  • Keep sprinkler heads properly adjusted and clean.
  • Trim grass around sprinkler heads to maintain coverage.
  • Take advantage of natural rainfall whenever possible.
  • Apply mulch to retain soil moisture.
  • Aerate your lawn annually.
  • Plant native and drought-tolerant species.
  • Remember: trees and shrubs require less frequent watering than lawns.

Commitment to Water Conservation

The Town of North Kingstown is committed to promoting responsible water use and protecting our community’s resources. By following these requirements and tips, residents can help ensure efficient irrigation while maintaining healthy landscapes.