technicians standing in-front of clients home
technicians standing in-front of clients home

Long Island Clean Water Service : Water Treatment in Nassau & Suffolk Counties, NY

Providing Long Island and the Greater New York Metropolitan Area with reliable water treatment solutions.

Whether you’re dealing with hard water, contaminants, or need a whole-home water filtration system, Long Island Clean Water Service is your go-to partner for clean, healthy water.

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Our Services

We offer the best water treatment solutions for home and business owners on Long Island.

Not Sure Which Water Treatment System You Need?

White buildup on faucets, orange stains in sinks, and unpleasant drinking water can point to different problems. At Long Island Clean Water Service, we always start with a water test to help you understand what’s causing your water problems before recommending equipment.

From Water Testing to the Right Treatment

  • Locally trusted icon Understand What’s in Your Water

    During your free water test, our technician checks key water quality indicators, discusses the problems you’ve noticed, and explains the results in plain language. If your concern requires additional laboratory testing, we’ll explain that next step.

  • Advanced water tech icon Choose Equipment That Addresses the Problem

    We use your results to explain whether a softener, filtration system, reverse osmosis system, or combination makes sense. We also consider how much water you use and which faucets or appliances need treatment, so the equipment fits both your water and your daily routine.

Our Offers

  • in home water test

    Complimentary In-Home Water Evaluation

    Don’t wait! Find out what’s hiding in your water today!

    Claim Offers
  • woman stretching in bed

    Get Clean Air at Home & Save

    Save $200-$300 on a new air purification system. Contact us for more details today!

    Claim Offers

Why LICWS Stands Out

  • Full service water icon Your Full-Service Water Treatment Experts

    We offer a comprehensive range of water treatment solutions, backed by our commitment to customer satisfaction and long-term performance.

  • Guarantee icon Guarantee & Warranties

    We guarantee all our installations, and our products come with excellent manufacturer warranties. With Long Island Clean Water Service, you can rest assured we’ll be here for years to come to help maintain your water filtration system cost-effectively.

  • Certified icon Licensed & Certified

    We’re fully licensed and insured and are proud members of the Water Quality Association, adhering to their rigorous Code of Ethics to ensure the highest standards of service.

  • 3rd party approval icon 3rd Party Seals of Approval

    Many of the products we offer carry prestigious agency seals like ISO 9001, two Gold Seals of Approval from the Water Quality Association, and several plumbing seals. We proudly display these to show our commitment to exceptional quality.

  • Made in USA icon Proudly & Safely "Made in the USA"

    Our systems are proudly manufactured in the USA and are part of the world’s largest water treatment system manufacturer. These innovative systems have satisfied customers for years, giving them cleaner and healthier water.