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Business Details
42 Years
experience
Expert Lawn Sprinkler Solutions in Edison, NJ
For over 40 years, Lass Irrigation has been a trusted provider of automatic underground lawn sprinkler systems across Central New Jersey. Founded in 1984, our company prides itself on delivering efficient, eco-friendly irrigation solutions designed to preserve both natural resources and homeowners' budgets. Our team of certified professionals, led by owner Walter Thergesena New Jersey state-certified irrigation contractor with extensive industry trainingspecializes in custom system design, installation, and maintenance. We use top-tier components with a three-year warranty, ensuring long-lasting performance and client satisfaction. Our commitment to minimizing lawn disruption during installation, coupled with lifetime customer support, has earned us a reputation for excellence.

From start-ups and winterizations to repairs and backflow prevention, we provide tailored solutions that meet diverse property needs. Our office staff ensures seamless communication and support, reinforcing our dedication to service quality. Serving communities like Edison, Metuchen, and Westfield, we combine technical expertise with environmental stewardship. Customers benefit from our competitive pricing structure, including discounted seasonal services, while our satisfaction guarantee underscores our confidence in every project. This holistic approach positions us as a reliable partner for residential and commercial irrigation needs in New Jersey.
Services
Sprinkler Installation System Repairs Winterizing Services Backflow Testing Controller Adjustments Valve Maintenance System Start-Ups Water Efficiency Audits Eco-Friendly Systems Emergency Repairs
Details
  • Year established: 1984
Highlights and features
  • 40+ years of specialized irrigation experience since 1984
  • New Jersey-certified professionals with industry-specific training
  • Eco-friendly systems using top-quality materials with 3-year warranties
  • Lifetime customer support for all irrigation needs
  • Minimally invasive installation preserving existing landscapes
Associations and certifications
  • Irrigation Association of New Jersey member
  • New Jersey state certified irrigation contractor #0015164
Services
Sprinkler Installation
Professional underground sprinkler installation using vibratory plows that preserve existing landscapes. Systems feature durable stainless steel fittings, protective valve boxes, and backflow preventers. Custom designs ensure optimal water distribution while maintaining lawn aesthetics.
Winterizing Services
Comprehensive system winterization preventing freeze damage. Includes water line tapping with ball valves and brass PVB backflow preventer installation. Ensures equipment protection during inactive seasons while maintaining warranty coverage.
System Repairs
Diagnosing and fixing irrigation issues with certified technicians. Covers valve replacements, head adjustments, and leak repairs. Emergency response available for critical failures affecting system functionality and water efficiency.
Backflow Testing
State-mandated backflow prevention testing ensuring drinking water safety. Certified professionals install and maintain brass PVB backflow preventers according to NJ regulatory standards for residential and commercial properties.
Controller Adjustments
Programming modifications for Rain Bird ESP modular controllers and other system timers. Includes seasonal adjustments, rain sensor integration, and customized watering schedules optimizing water usage and plant health.
People
Walter Thergesen
Owner/Operator
Certified irrigation contractor since 1986 with expertise in system design and installation. Holds Irrigation Association certifications and provides personalized oversight for every project. Member of the Irrigation Association of New Jersey.
Questions
What irrigation services do you provide?
We specialize in sprinkler installation, winterization, repairs, backflow testing, and controller programming for residential and commercial properties across Central New Jersey.
Which areas do you serve?
Our primary service area includes Edison, Metuchen, Westfield, and surrounding communities in Middlesex, Somerset, and Union counties.
How much do service calls cost?
Service rates range from $88.50 for 1-6 zone systems to $171.50 for 21+ zones. Repair estimates cost $95, which applies toward actual repair charges.
Do you offer warranties?
All installations include a three-year warranty on high-quality components. Systems use durable stainless steel fittings and weather-resistant materials for long-term reliability.
Can I schedule appointments online?
Yes, visit our website to schedule service, winterization, start-up, or estimate appointments through our online booking system.
How do payments work?
We accept PayPal payments through our online portal. Commercial clients receive detailed invoices for services rendered.
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