The short answer
Watering rules depend on your supplier and local requirements. Suffolk County Water Authority publishes odd/even calendar-day guidance and a 10 a.m. to 4 p.m. no-watering window. Check the current supplier notice before setting your controller.
Permission to water is not a reason to water
An allowed day is not a requirement. Recent rain, soil conditions, shade, and the season affect whether your lawn needs more water. Look for runoff, overspray, and areas that stay wet rather than simply increasing every zone’s runtime.
Give each zone a purpose
Lawn and planting beds may have different requirements. Irrigation output also varies by head type and coverage. Have the system assessed before applying the same schedule everywhere.
Keep the schedule current
Review settings after meaningful seasonal changes and check temporary drought notices. If you use a smart controller, confirm that its weather adjustments and permitted watering days are set correctly.
Further reading
SCWA: current odd/even watering guidance ↗SCWA: water conservation ↗Check current supplier and manufacturer guidance for your system.
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