Irrigation Specialists in Seattle
Irrigation installation, winterization, drip and sprinkler repair in Seattle
We take care of irrigation installations, drip conversions, equipment upgrades, backflow testing, start-ups and winterizations. Contact us to get your irrigation system in Seattle performing optimally today!
BAT
certified technicians
Water
conscious
4.9 
Google rating
Speed
and Convenience
Our Irrigation Services
Know Them Here, Explore Them Below
Irrigation Installation
Full design and installation of smart irrigation systems by zones, water-efficient sprinklers, and drip irrigation, for new and established landscapes.
Irrigation Repairs
We visit your property to diagnose leaks, valve problems, coverage issues, and broken components to fix those failures. We advise on how to prevent future damage too.
Equipment Upgrades
Improve your system with smart irrigation controllers, conversion to drip irrigation, spray rotator heads, adding a zone or a master valve, and other efficient components.
Winterization
Protect your irrigation system from Seattle’s freezing temperatures with a professional shutdown before the first hard freeze.
Spring Start Up
Bring your system back online this spring, zone by zone, so your landscape gets water exactly when and where it needs it while preventing potential future damages.
Backflow Testing
An annual testing by a certified backflow professional is required by the city to keep your irrigation system compliant and your water supply protected.
Service Area
We provide irrigation services throughout the Greater Seattle area, essentially anywhere near I-5 or I-405, including Shoreline, Renton, Tukwila, Mercer Island, Bellevue, Kirkland, and Bothell.
Not sure if we service your address? Send us your location and we’ll confirm whether we can help.
- Preferred
- Extended
Irrigation Installation
A System Built for Your Landscape
We design your irrigation system with your garden’s conditions in mind, including plant types, sun exposure, and slopes. Your system will be divided into [X] independently controlled irrigation zones, allowing different areas of the landscape to receive water based on their specific needs.
Although “less is more” when it comes to sustainable irrigation, we’ll take into account certain factors that influence this principle and schedule your irrigation based on your plants’ growth stages.
New plantings, even natives, need extra water while they’re establishing roots. Over time, they’ll grow into a thriving garden that supports wildlife right in your own backyard and need less water. That’s why it’s important to gradually adapt your watering to the life growing in your yard.
At Seattle Sustainable Landscapes, we’ll put our expertise to work for your garden, including water-efficient planting design and drainage systems such as rain gardens to make more efficient use of water.
Drip Irrigation Systems
Body Type sheets
- Less water lost to evaporation and overspray
- Plants receive a steady, consistent supply
- Foliage stays dry, which lowers the risk of fungal diseases
- Improved absorption because drip systems apply water at a slower rate
Spray Rotators System
For lawns, spray rotators are our go-to. Their rotating stream delivers water in a tight, controlled pattern, using meaningfully less water than a traditional sprayer. Benefits:
- Around 30% more water-efficient than a traditional sprayer
- A controlled pattern that holds up better in wind
- Even coverage across larger lawn areas
- Reduced runoff and overspray
- A straightforward upgrade for systems still running older spray heads
Smart Controller
Your new system will include a Rachio® Smart Irrigation Controller, which automatically adjusts watering schedules based on local weather conditions. You’ll enjoy:
- Remote access from your phone
- Automatic rain skips
- Seasonal watering adjustments
- Notifications and system monitoring
- Reduced water waste throughout the year
Process for Irrigation Installation
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Site Assessment
We walk your property to understand your landscape’s layout, plant zones, sun exposure, and existing water sources.
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System Design
We map out zones suited to your plants and lawn, choosing drip lines, spray rotators, or a combination based on what each area needs.
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Installation
Our crew installs piping, valves, heads, controllers, and professional-grade irrigation components, including:
– Shut-off valve
– Backflow prevention assembly
– Winterization blowout connection
– Full system testing and calibration -
Walkthrough
Our technicians test every irrigation zone, verify coverage and efficiency, program the controller, calibrate system performance and review system operation with you. We show you how your new system works and how to adjust it through the seasons.
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Annual Maintenance, If Desired
We offer an annual irrigation maintenance plan that includes:
– Summer Audit: Each year, we adjust your system to provide the right amount of water for each plant zone, based on plant maturity, site conditions, and seasonal needs.
– Winterization: We professionally shut down your irrigation system and make sure no water remains in the pipes or irrigation components, helping prevent freeze-related damage.
– Spring Startup: We bring your system back online, verify coverage and efficiency, program the controller, calibrate system performance, and review the system’s operation with you.
– Backflow Testing: Seattle requires annual testing to verify that your backflow assembly is working properly and preventing water from your irrigation system from flowing back into the neighborhood water supply.
Looking to reduce your irrigation needs?
Our xeriscaping services pair drought-tolerant plants with thoughtful design to create a landscape that asks less of your irrigation.
Irrigation Repairs
Diagnose, Fix, Prevent
Leaks, broken sprinkler heads, areas without coverage, and valve issues waste water and damage your yard. As your irrigation system repair team, we diagnose the source of the problem throughout your entire system and repair or replace whatever is needed to get your irrigation system running efficiently again.
Besides being your drip or sprinkler repair team in Seattle, we can also suggest ways to improve your current system so the problem doesn’t happen again.
Proper winterization, professional start-up services, and updating older components allow you to get the most out of your existing system and reduce water-related problems in the future.
Common Irrigation Problems We Fix
Leaking sprinkler heads
Broken irrigation lines
Dry spots and poor coverage
Controller and timer issues
Valve malfunctions
Water pooling & oversaturation
Equipment Upgrades
Smarter Components for Better Efficiency
A few small improvements to your current irrigation system can make a real difference in water usage and plant health.
Smart controllers and soil moisture sensors adjust the irrigation schedule based on local weather and soil conditions, preventing water waste and overwatering.
Replacing old sprinklers with drip lines or rotating sprinklers reduces water loss through evaporation. Adding a zone can also give you more control over the watering schedule based on your plants’ needs.
We’ll help you choose the upgrades that best fit your system and garden, then install them to work seamlessly with your current setup.
Spray to drip
Nozzles & heads
Smart controller
Adding a zone
Backflow assembly
Quick connect
Flow meter
Hose timer
Master valve
Winterization
Protect Your System Before the Freeze
Freezing temperatures can damage irrigation pipes, valves, sprinkler heads, and backflow preventers left full of water. Our irrigation winterization service shuts off the water supply and uses compressed air to clear water from every line and zone, helping protect your system from freeze damage.
Even in Seattle’s maritime mild climate below-freezing nights still show up between November and February. Areas like Redmond, Maple Valley, and Woodinville see them more often than the city core.
Winterization is available as a standalone service or as part of our annual irrigation maintenance plan.
When to Winterize in Seattle
Before The First Freeze
Plan to start winterizing about one week before the first hard freeze, when nighttime temperatures are expected to drop below 32°F.
Early in The Fall
If weather patterns are uncertain or you’re in a new climate, you can always get a head start by winterizing in early Fall.
When Grass Becomes Dormant
The grasses on your lawn will herald the first signs of winter as they become dormant, stop growing, and lose color.
Pair Irrigation With Ongoing Care
Keep yard maintenance, watering, mowing, and plant care coordinated through the year.
Spring Start Up
Bring Your System Back Online
Spring startup prepares your irrigation system for the growing season. As Seattle moves from winter into spring, changing rainfall, soil moisture, and plant growth can quickly change your watering needs.
We gradually reopen the water supply, reset your controller for the season, and test every zone for coverage, alignment, and pressure. We also check sprinkler heads for damage or shifting that may have occurred over winter, helping catch small issues before they become bigger repairs.
Sprint startup is available as a standalone service or as part of our annual irrigation maintenance plan that keeps your system adjusted as conditions change throughout the growing season.
Backflow Testing
Keep Your Water Supply Protected
A backflow preventer keeps irrigation water from flowing back into your home’s water supply, helping prevent contaminants from soil, fertilizer, and standing water from entering your drinking water.
Annual backflow testing by a certified technician is required for most Seattle-area irrigation systems. We use calibrated equipment to confirm your backflow preventer is working properly and help keep your system compliant with local requirements.
Your sprinklers can work perfectly while a backflow assembly develops an internal issue. Testing helps catch problems that aren’t visible and gives us the opportunity to make repairs when needed.
Backflow testing is available as a standalone service or as part of our annual irrigation maintenance plan.
What to Expect
Our BAT-certified technicians complete backflow testing in about 20 minutes, including device inspection, pressure testing, valve verification, and certification paperwork.
Many homeowners schedule backflow testing with spring startup or winterization when their irrigation system is already being inspected.
Annual Irrigation Maintenance Plan
Your irrigation system needs attention throughout the year. Our annual maintenance plan takes care of each seasonal service when it’s needed, so your system stays ready and you don’t have to keep track of every task.
Get all four services and enjoy discounts on repairs & equipment upgrades
Summer Audit
- Irrigation audit in each zone
- Coverage adjustments
- Equipment recommendations
Fall Winterization
- Professional winterization
- System shutdown
- Freeze protection
Spring Start-up
- System startup
- Zone inspection
- Adjustments
- Leak checks
Backflow Testing
- Certified Backflow testing to comply with city regulations
Irrigation Questions Answered
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How to detect irrigation issues?
Watch for dry or soggy patches, weak or uneven spray, water pooling around valve boxes, and a water bill that’s climbing without an obvious reason. Sprinkler heads that stay dry during a cycle, or run long after it ends, are also worth a closer look. Catching these signs early usually means a simple repair instead of a bigger one.
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Do I need a repair or a full system replacement?
Most irrigation issues, leaks, broken heads, coverage gaps, come down to a repair rather than a full replacement. We assess your existing system first and recommend a new install only when it’s the more practical option long term.
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What’s the difference between drip irrigation and spray rotators?
Drip irrigation delivers water directly to plant roots, making it the most efficient choice for planting beds. Spray rotators cover lawns in a rotating pattern that uses less water than a traditional sprayer. Most landscapes benefit from a combination of both.
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When should I winterize my irrigation system in Seattle?
Plan to start about a week before the first hard freeze. In milder, wetter falls that window can stretch into November, in colder years it can arrive as early as late October, so we track the forecast to time it well.
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Do I really need to winterize in a mild climate like Seattle?
Yes. Seattle’s winters feel mild on average, but below-freezing nights still occur between November and February, and outlying areas see them more often than the city core. It only takes one hard freeze to damage an unprotected system, as happened to hundreds of systems across King County in November 2021.
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Do I need backflow testing every year?
Yes, annual testing keeps your backflow preventer compliant and confirms it’s protecting your household water supply. We can test as a standalone visit or bundle it into your annual maintenance plan.
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If my sprinklers work fine, does that mean my backflow preventer is fine too?
Not necessarily. A backflow assembly can wear down internally while your system keeps watering normally, since the issue isn’t visible from the outside. That’s why annual testing uses calibrated equipment rather than a visual check, and why it’s worth doing even when everything looks fine on the surface.
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Can you upgrade my existing system instead of replacing it?
In most cases, yes. Adding smart controllers, drip lines, or spray rotators to an existing system is a cost-effective way to improve efficiency without a full reinstall.
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Do you offer ongoing irrigation maintenance?
Our annual maintenance plan covers spring startup, a summer audit, fall winterization, and yearly backflow testing, so your system gets attention at every point in the season without you having to schedule each visit separately.
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What areas do you service?
We provide irrigation services throughout the Greater Seattle area, essentially anywhere near I-5 or I-405. Let us know your address, and we’ll confirm.