Lawn Irrigation in Washington County
Lawn Irrigation in Washington County typically runs $3,000 to $5,000 for a new system on a 1/4 acre lot and $5,000 to $8,000 for a new system on a 1/2 acre lot, depending on yard size and zones, system complexity and smart controls. 32 local contractors serving Washington County. We are still vetting a TenPenny pro for this area.
- 32 local providers
- Washington County, Minnesota
Keeping Washington County yards green from Stillwater to Woodbury
Woodbury's newer neighborhoods were built with irrigation in mind, while older Stillwater and Oakdale yards grew up on hose discipline, and both meet the same dry August. Established yards with mature trees need a gentler retrofit than a blank new lot.
A local installer handles both: clean retrofits that respect existing roots and landscaping, and full designs for newer yards, all on smart controllers tuned to city rules. Either way the yard holds its color through the driest weeks.
Looking for something else in Washington County? See all trades in Washington County Lawn Irrigation across Minnesota and Wisconsin
What it costs
| Job | Typical range |
|---|---|
| New System (1/4 acre) | $3,000 - $5,000 |
| New System (1/2 acre) | $5,000 - $8,000 |
| New System (1+ acre) | $8,000 - $15,000 |
| Smart Controller Upgrade | $200 - $500 |
| Winterization (Blowout) | $75 - $150 |
| Spring Startup | $75 - $150 |
| Head Replacement | $15 - $50 each |
| Valve Replacement | $150 - $300 each |
| Backflow Preventer | $200 - $500 |
| System Repair (typical) | $100 - $300 |
| Drip Irrigation (beds) | $500 - $1,500 |
Regional note: Twin Cities metro trends higher than rural areas.
Cost estimates updated July 2026. Estimates only; get a firm quote from a local contractor.
What affects your price
Your quote depends on more than square footage. In Washington County, these are the details that move the price:
- Yard size and zones
- System complexity
- Smart controls
- Permits and local inspection requirements
- Seasonal timing and crew availability
Local contractors in Washington County
32 local providers in our directory.
For contractors
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Claim exclusive vetted statusCommon questions
How much does a sprinkler system cost in Washington County?
New irrigation systems in the area typically run $2,300 to $5,000, based on lot size, zones, and water source.
Do I have to winterize my sprinklers in Washington County?
Yes. Every fall the system needs a blowout to clear water from the lines. Skipping it cracks pipes and heads when the ground freezes.
Do I need to winterize my sprinklers in Washington County?
Yes, Washington County irrigation systems must be blown out with air before the first hard freeze or the pipes and heads can crack. This fall step is the single most important task for our climate.
When should I turn on my Washington County sprinkler system?
Start a Washington County irrigation system in spring once the risk of a hard freeze has passed, with a pro checking heads and zones. A startup check catches winter damage before it wastes water.
How much watering does a Washington County lawn need?
Most Washington County lawns want about an inch of water a week from rain and irrigation combined, more in a dry spell. A smart controller with a rain sensor adjusts so you are not watering after a storm.
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