Water Treatment Services in Nassau County, NY
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24/7 Emergency Service

Reach out to the experts at Rebmann Plumbing, Heating & Air Conditioning if you have a plumbing or HVAC emergency on Long Island. We’re here to help 24/7. If your furnace goes out in the winter or your AC stops cooling in the middle of summer, we’ll repair it day or night. Call our team at 516-746-5678 for emergency services on Long Island, Roslyn, or Port Washington, NY. Residential and commercial repairs available.

Water Treatment Services in Nassau County, NY

In Nassau County, NY, from the tree-lined streets of Garden City to the waterfront houses of Port Washington, hard water is more than a nuisance. It’s a silent culprit behind corroded fixtures, clogged plumbing, and shortened lifespans for water-based appliances. Mineral-rich water leaves behind scale that builds up inside dishwashers, water heaters, and washing machines, reducing efficiency and driving up energy costs. Even your morning coffee can suffer when hard water interferes with flavor and appliance performance. Since 1938, Rebmann Plumbing, Heating & Air Conditioning has been the trusted name in water treatment across Nassau County, delivering tailored solutions that protect your plumbing and elevate your water quality.

Say goodbye to hard water damage in Nassau County. Contact Rebmann Plumbing, Heating & Air Conditioning for a water analysis near Roosevelt Field or the Long Island Rail Road.

Residential water softener refill

How Does Whole-Home Water Treatment Work?

Whole-home water purification systems are installed at the point of entry, where your main water line enters the house. This strategic placement ensures that every tap, showerhead, and appliance receives treated water. These systems typically combine multiple technologies: water softeners to remove excess minerals, filtration media to trap sediment and chemicals, and purification stages like UV light or reverse osmosis to eliminate microbial threats. The result is consistent, high-quality water throughout your house, without the need for individual filters at each faucet.

Water Softeners in Nassau County

Water softeners work through ion exchange, replacing calcium and magnesium ions with sodium or potassium. This process prevents scale buildup in plumbing and appliances, helping your water heater, dishwasher, and laundry machines operate more efficiently. Softened water also improves soap lathering, reduces skin dryness, and eliminates the chalky residue left on dishes and fixtures. In Nassau County, where groundwater hardness is common, softeners are a smart investment in both comfort and cost savings.

Water Filtration Systems

Water filtration systems target a wide range of contaminants, including sediment, chlorine, and volatile organic compounds. Multi-stage filters often include sediment pre-filters and activated carbon layers that trap rust, sand, and chemical residues. These systems improve taste, eliminate odors, and reduce exposure to disinfection by-products. Whether you’re filling a glass in Manhasset or rinsing vegetables in Baldwin, filtration ensures your water is clean, clear, and refreshing.

Water Purification Systems

Water purification systems go beyond filtration by removing dissolved solids and biological contaminants. Reverse osmosis membranes block microscopic particles, while UV sterilization neutralizes bacteria and viruses. This dual approach is ideal for families seeking the highest level of protection, especially in areas with aging infrastructure or well water concerns. Whole-home water purification delivers peace of mind, whether you’re bathing your children or cooking dinner.

Customized Water Treatment Solutions for Your Home

Our team begins with a comprehensive water analysis, evaluating hardness, pH, turbidity, and contaminant levels. Based on your property’s unique water profile, we design a personalized solution that may include water softeners, filtration systems, or whole-home water purification. Our licensed technicians handle installation with precision and provide clear guidance on system maintenance, ensuring your investment delivers long-term value and performance.

Get Better Water Today – Schedule Your Consultation

When you choose Rebmann Plumbing, Heating & Air Conditioning, you’re choosing a team of licensed, background-checked professionals trained in cutting-edge facilities. We service all brands, offer free estimates on replacement quotes, and provide upfront pricing with no surprises. Whether you need same-day emergency service or flexible financing options, Rebmann is ready, day or night. Military, veteran, and senior discounts reflect our commitment to the community, from Glen Cove’s historic neighborhoods to the sun-soaked shores of Jones Beach.

Ready to upgrade your water quality in Nassau County NY? Schedule your consultation with Rebmann Plumbing, Heating & Air Conditioning and experience the confidence of clean, safe water at every tap.

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I was very happy I chose to work with Rebmann. They were very professional and courteous. Finished the install in record time and back up their work as well.

Jeff F.

Jeff F.

Very happy with the service provided. The team knows what they are doing, they are professional, efficient, punctual, nice. They follow up to make sure everything is OK. I would definitely recommend.

Hubert A.

Hubert A.

First time customer and couldn’t be more happy with the service I received. Professional, caring and knowledgeable!! Will definitely call again.

Regina V.

Regina V.

Rebmann installed a new gas furnace. I couldn't have been more satisfied with the experience in every respect. Professional, competent, punctual and polite. I recommend highly. My technician and the rest of the crew were outstanding.

Eileen M.

Eileen M.

Rebmann is an excellent service provider. We've been using them for 20 years! They are always very responsive and their technicians are professional, courteous, friendly and knowledgeable.

Dennis P.

Dennis P.