edison, new jersey

Edison lawn sprinklers, Metuchen lawn irrigation, Scotch Plains lawn sprinklers, Westfield lawn irrigation, South Plainfield sprinklers, Fanwood lawn care and most of central New Jersey lawn care

About Us

Our Services

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Lawn sprinkler system installations

Lawn sprinkler system repairs

Start-Ups and Winterizings

Landscape Lighting Installations

Independent Station Controller
 

Swing Joints
 

Valve Box
 

Waterproof Wire Connectors
 

Schematic (upon request)
 

Rain Sensor
 

Cast Landscape Lighting
 

Koi Ponds

​Drainage

**Check out some of the products we proudly install on our products page.


What We Offer




Walter Thergesen

Owner/Operator

Our Team

Professional Team


LASS Irrigation provides our customers a well installed lawn sprinkler system that will effectively and efficiently irrigate your yard.  Installation does no damage to your existing lawn.  The top quality products used by LASS Irrigation provide long lasting service and include a three-year warrantee.  These eco-friendly products water your lawn resourcefully, saving the environment and our customer’s money.  The friendly, professional and hard working staff at LASS Irrigation installs and services each sprinkler system, providing the customer lifetime support for all their irrigation needs as well as other services.  LASS Irrigation’s helpful office staff of​fers excellent customer support that is equipped to serve the customers needs and concerns.​


Walter Thergesen is owner and operator of LASS Irrigation.  Working for LASS Irrigation since 1986, he brings his experience and expertise in the irrigation industry to you.  He is a New Jersey state certified irrigation contractor #0015164.  He is a member of the Irrigation Association of New Jersey.  He has worked for and in cooperation with management corporations, landscapers, builders and homeowners in all phases of operation.  Walter is educated in Irrigation Association courses: Design Level I and Design Level II, as well as supplier/distributer training courses.  Walter will personally estimate and design every customer’s sprinkler system to ensure a custom design and installation.