Irrigation System Design, Installation & Repairs

Man adjusting a smart irrigation system control panel in a lush garden with sprinkler heads watering the lawn and garden beds, surrounded by trees and pathways.

SMARTER WATER, HEALTHIER LANDSCAPES — DESIGNED & INSTALLED TO LAST.

Water management is one of the most important investments you can make in a landscape. Too little and plantings fail. Too much and you're fighting root rot, runoff, and erosion. Summit Landscape & Construction designs and installs irrigation and drainage systems that deliver the right amount of water to the right places — and move excess water away from where it causes damage. We serve residential and commercial properties across Snohomish and King Counties.

Irrigation & Water Management Services

Irrigation System Design, Installation & Repairs

A man and woman are having a conversation outdoors near a large tree. The woman is holding rolled-up plans and a tablet, and the man is gesturing with his hands. There is a picnic table with tools and books nearby.

Standing water, soggy lawns, and water intrusion near foundations are signs of a drainage problem — and in the Pacific Northwest, they're common. Summit installs French drains, catch basins, channel drains, and surface drainage solutions to redirect water away from your home, yard, and landscape investments. We assess the slope, soil, and water source before designing a system that actually solves the problem.

  • French drain installation

  • Catch basin and channel drain installation

  • Surface grading for positive drainage

  • Downspout and gutter drain tie-ins

  • Foundation perimeter drainage

Drip Irrigation Systems

A woman tending to a garden, watering plants with a hose in an outdoor setting.

Drip irrigation is the most efficient way to water trees, shrubs, raised beds, and garden areas. Instead of broadcasting water across a zone, drip systems deliver it directly to the root zone — reducing evaporation, limiting weed growth, and giving plants exactly what they need. Summit installs drip systems as standalone setups or integrated into a larger irrigation design.

  • Raised bed and garden drip line installation

  • Tree and shrub root-zone delivery

  • Emitter selection for plant type and spacing

  • Integration with existing sprinkler systems

Drainage Systems

Modern house with large glass windows surrounded by well-maintained garden with colorful flowers, lush greenery, and a rock pathway.

Culverts manage water flow under driveways, access roads, and property crossings — and a properly sized, correctly installed culvert is critical for preventing washouts and protecting your driveway investment. Summit handles culvert installation for new driveways, replacements for failed or undersized culverts, and drainage crossings across ditches and low points.

  • New culvert installation for driveway crossings

  • Culvert replacement and upsizing

  • Proper bedding, compaction, and end treatment

  • Coordination with county/municipal drainage requirements

Culvert Installation

Construction site with a large metal drainage pipe installed through a dug trench, surrounded by gravel and dirt, with a compactor nearby on a rural road.

A well-designed irrigation system saves water, saves money, and keeps your landscape healthy without the daily chore of hand watering. Summit designs systems around your property's specific layout, plant types, and water pressure — then installs them with commercial-grade components built to last. We also service and repair existing systems: diagnosing broken heads, failed zones, controller issues, and seasonal winterization.

  • Residential sprinkler system design and installation

  • Zone-by-zone layout for turf, shrubs, and beds

  • Smart controller and timer installation

  • System repairs, head replacement, and diagnostics

  • Seasonal startup and winterization

Request A Quote

Call or Text: 425-780-5433 | Serving Snohomish & King Counties

Your Irrigation & Water Management Questions, Answered

  • It depends on the scope and your county. Some culvert replacements and larger drainage installations require permits, especially near wetlands or road right-of-ways. Summit is familiar with local requirements and will help identify what's needed before work begins.

  • Common signs include standing water after rain that doesn't drain within 24–48 hours, soggy or dying lawn areas, water pooling near the foundation, and erosion channels forming in yard areas. If you're seeing any of these, it's worth a consultation.

  • Yes. We diagnose and repair irrigation systems regardless of who installed them — from head replacements to controller upgrades and full zone diagnostics.

  • "Summit planned and installed our entire irrigation system as part of a full yard renovation and the coordination was seamless. They laid the lines before the sod went down, zoned everything properly for the lawn versus the beds, and walked us through the controller before they left. The yard has been on autopilot ever since — healthiest grass we've ever had, and we haven't dragged a hose around once. Worth every dollar."

    New Sprinkler System & Full Yard Install — Homeowner, Snohomish, WA

  • "We had serious runoff coming off the neighboring property every time it rained — water sheeting across our yard and pooling along the fence line. Summit designed a French drain system to intercept it before it got to the house, and then did something I didn't expect: they tied the outlet into a river rock channel that runs along the side of the yard and connects with our rain chains off the gutters. It looks intentional, like it was always part of the landscape design. Functional and genuinely beautiful."

    French Drain to Mitigate Neighboring Property Runoff — Homeowner, Woodinville, WA

  • "We had a ditch crossing at the end of our driveway that needed a culvert before we could put in the new paver surface. Summit handled the whole thing — sized the culvert properly for the drainage volume, installed it with the right bedding and compaction, and tied it into the driveway project so everything was done in sequence without any delays. The driveway looks fantastic and the water management is exactly right. No washouts through the first full winter."

    Culvert, Under New Paver Driveway — Homeowner, Monroe, WA

  • "We had an old sprinkler system that was constantly giving us problems — broken heads, zones that wouldn't fire, a controller from what felt like 1995. Summit diagnosed everything, repaired what was worth saving, and upgraded the controller to a smart system with WiFi and soil moisture sensors. I can adjust zones from my phone and the system skips automatically when it rains. Greg explained every option clearly and didn't push us toward anything we didn't need. Our water bill dropped noticeably the first month."

    Irrigation Repair & Upgrade to WiFi & Sensors — Homeowner, Bothell, WA