Long Island Lawn Sprinklers System Service for Nassau and Suffolk County. We are the best irrigation company on Long Island. When customer service, quality workmanship and complete customer satisfaction is important to you, Kleen Cut is your answer. Kleen Cut Irrigation is a family owned and operated company, fully licensed and insured in Nassau and Suffolk County. Established in 1980 wehave over 30 years of hands on experience.At Kleen Cut Irrigation, we thrive on building mutually beneficial, long-term relationships with all of our valued customers. We achieve this goal by taking the time to get to know you and by understanding your needs and wants. We treat every single customer as an individual and strive for your complete satisfaction through the provision of industry leading products and services, education and information.