Irrigation winterization and spring start-up services

Two short seasons, one service line

Irrigation work in cold-winter regions comes in two bursts: a few weeks in fall when every system must be drained before pipes and backflow devices freeze, and a few weeks in spring when the same systems are turned back on. Both bursts arrive when landscaping crews are either winding down or ramping up. US landscaping services employment moved from 756,000 in January 2025 to 1,014,200 in July 2025^[2], and much of the trade's work is available mainly in spring, summer and fall^[3].

Handled well, irrigation visits keep skilled staff busy at the edges of the season, create repair work and give you a reason to talk to every system owner twice a year. Handled poorly, they become a scramble of callbacks for cracked valves and leaking heads.

Fall winterization methods

Spring start-up checklist

1. 01

   Confirm the freeze risk has passed

   Do not pressurize the system until overnight freezes are unlikely in your area. Book start-ups in waves from the warmest neighborhoods first.

2. 02

   Open the supply slowly

   Restore water gradually to avoid pressure surges, then check the backflow device for leaks or damage.

3. 03

   Run each zone

   Look for broken, tilted or clogged heads, low pressure and wet spots that signal a leak.

4. 04

   Adjust and repair

   Aim heads away from hard surfaces, clean nozzles and quote any repairs on the spot with photos.

5. 05

   Set the controller

   Program a spring schedule, check the clock and battery, and enter local watering day rules if they apply.

Small adjustments matter. EPA WaterSense notes that homes with clock-timer controlled irrigation use about 50 percent more water outdoors than homes without irrigation systems, and that an incorrect schedule or a broken head wastes even more^[4]. A careful start-up is a water-saving visit, and you can say so.

Scheduling by freeze date, not by call order

• Find the typical first hard freeze for each part of your service area and set the fall window to finish before it.
• Open booking in late summer to existing customers, with a cutoff date for guaranteed service.
• Group properties by neighborhood or zone so a technician can complete several stops per hour of driving.
• Hold a few slots each day for urgent cases such as early cold snaps or homes being sold.
• Book next spring's start-up at the fall visit so the spring route is built before the phones ring.

If customers call to book during evenings and weekends, make sure the request is captured with address, system type and access details. Otherwise the slot goes to the next company that picks up.

Backflow testing: know the rules where you work

Backflow prevention assemblies protect drinking water from irrigation water flowing back into the supply. Many water utilities require testing of these assemblies on installation and on a set schedule, by a tester they recognize. Requirements vary by state and utility, so treat this as a compliance service with its own checklist.

• Which certification does the utility accept, and does it keep a list of approved testers?
• Which assembly types and test procedures apply, and which gauges must be calibrated and how often?
• Which form must be filed, by when, and to whom?
• Are there separate licensing rules for irrigation installation or repair in your state?
• Who keeps the record: you, the customer or the utility, and for how long?

Test reports and reminders are recurring work. Keep each assembly's location, type, serial number and due date in your customer records, and contact the customer ahead of the due date.

Training technicians for both seasons

Most callbacks in this line of work come from the same few mistakes: a backflow device left with water in it, a manual drain missed at a low point, or a start-up done before the last freeze. Training should focus on those, with a short ride-along for every new technician before they run a route alone.

1. Identify each common backflow assembly type in your area and the correct shut-off and drain sequence for it.
2. Read a system from the controller: count zones, find the valve boxes and note where drip zones need lower air pressure.
3. Practice compressor set-up and connection on a training board before working on a customer system.
4. Know when to stop: a cracked device, a stuck valve or no access to the shut-off is a repair ticket, not a guess.
5. Photograph the backflow device, the controller screen and any defect on every visit.

A short end-of-day review during the first week of each season catches habits before they turn into a run of spring leak calls. Keep a list of last season's callbacks and use the real cases in training.

Turning visits into repair work

The start-up visit is the best moment to sell repairs, because the customer can see the problem. Train technicians to show, quote and schedule in one conversation. A broken head next to a driveway, a zone that never reaches the far corner of the lawn and an old controller with no weather adjustment are all easy to explain with a quick demonstration.

Keep common parts on every truck so most repairs can be done the same visit: heads and nozzles in your most common brands, valve diaphragms and solenoids, fittings and a small stock of pipe. Larger jobs, such as a new zone, a drip conversion for beds or a controller upgrade, should get a written estimate and a booked date. Track the repair revenue that follows each seasonal visit. For many companies it is the main reason the visits are worth running.

Pricing a visit that pays

Start with labor. The median hourly pay for US grounds maintenance workers was $19.27 in May 2025^[5], but pay is only part of the cost. Benefits made up 30.0% of private employer compensation costs in June 2026^[1]. Add payroll taxes, the truck, compressor fuel and wear, and the drive time between stops.

Example (fictional): a company figures a fully loaded technician cost per hour, adds truck and compressor costs, and divides by the stops it completes per hour on a dense route. It sets a flat fee by number of zones, a surcharge for properties outside its zones, and a separate price for backflow tests and repairs. Because most competitors are small, 70.6% of landscaping establishments had fewer than five employees in 2023^[6], a clear published price list and on-time visits stand out.

Measures to review after each season

• Visits completed before the freeze date, as a share of systems booked.
• Stops per technician per day, by neighborhood.
• Spring callbacks for freeze damage, traced back to the fall technician and method.
• Repair revenue per seasonal visit.
• Backflow tests filed on time with each utility.

Selling the annual service

Bundle both visits, and the backflow test where required, into an annual plan. Sell it at the spring start-up when the customer can see the technician working, and renew it automatically with written consent. For other ways to fill the shoulder seasons, see landscaping off-season revenue ideas and drought and watering restrictions.