What this checklist covers
Water left in irrigation lines can freeze and crack pipes, valves and the backflow device. A blowout clears it with compressed air, one zone at a time. Too much pressure or running a zone dry can damage heads and pipes, so follow the system and compressor makers' instructions.
How to use it
Tick each item as you go. The sheet saves in this browser, so you can close the page and come back. Print a blank copy for the truck, or fill it in on your phone and print or save it as a PDF for the customer at the end.
With Koira: Seasonal reminders
When the season comes, Koira texts and emails the customers you have already worked for with one tap to book a fall blowout. Campaigns are part of the Grow plan.
Last checked October 9, 2026. This page is general information, not legal or tax advice. Rules change and differ by state and city, so confirm with the agency named before you act.