Reverse osmosis (RO) is one of the more common methods by which households and businesses can achieve cleaner, healthier water. But many still do not know how such systems work or why they are important. First, let’s explain why it’s needed. Here in Long Island, man-made pollution from industrial waste has contaminated our groundwater aquifers, the main source of water for our homes in both Nassau and Suffolk Counties. To get clean drinking water, residents have a couple of choices: Buy expensive bottled water or use a reverse osmosis system, which can clean or purify the water coming out of your tap easily or clean all the water coming into your home at the point of entry. Here’s more about how it works.

What Is a Reverse Osmosis System?

Reverse osmosis is a highly effective water purification process, which uses pressure to force water through a semi-permeable membrane, removing impurities and harmful contaminants in the process. RO systems are one of the most efficient and effective filtration methods that can remove dissolved solids, fluoride, chlorine, PFAS/PFOAs, arsenic, nitrates, and other contaminants and impurities that can be found in Long Island water.

How Does Reverse Osmosis Work?

The process involves several stages:

  • Water goes through a prefilter:
    • This removes dirt, sediment, and bigger particles to protect the membrane.
  • Water is pushed through a special membrane:
    • The membrane only allows tiny water molecules and essential minerals to pass through.
    • Here it traps impurities and contaminants, keeping them behind.
  • Clean and safe water is stored in a small tank:
    • The purified water collects in a storage tank.
    • It’s ready to be used whenever you need it.
  • You can access the purified water from the faucet:
    • When you turn on the tap, the clean water flows out for drinking or other uses.

More About Reverse Osmosis Systems

At Simply PÜR, we have both under-sink systems (point-of-use) as well as whole-home filtration systems with reverse osmosis (point-of-entry), depending on your needs. Most reverse osmosis systems are actually multi-stage filtration systems, which include a number of filters (carbon etc.) as well as a specific reverse-osmosis filter described above. Together, these filters provide protection against the contaminants found in Long Island water. We can help you easily install it and talk with you about the basic maintenance and upkeep that are required.

Why Do You Need a Reverse Osmosis System in Long Island?

Groundwater quality on Long Island has been impaired by saltwater intrusion and human activities. Volatile Organic Compounds (VOCs) are the predominant contaminants found in Long Island’s groundwater. These chemicals, widely used in various industries including high tech, electronics, manufacturing, defense, and dry cleaning, are known to be both carcinogenic and toxic.

The installation of RO systems in Long Island guarantees a secure and dependable source of clean drinking water for residents and businesses. These systems not only safeguard against harmful chemicals and toxins but also contribute to environmental sustainability by reducing plastic waste from bottled water. Reverse osmosis provides a reliable and cost-effective solution for eliminating these impurities, ensuring that residents have access to clean and healthy drinking water.

Factors to Consider When Choosing a Reverse Osmosis System

When selecting an RO system, it is crucial to consider essential factors such as where you want to prioritize your clean water (at a particular source such as the kitchen sink or home refrigerator line) or throughout the entire house. Other factors can include water usage patterns, and the specific contaminants present in the water source. As a Pentair True Blue Partner and Authorized Distributor of Pentair Products, our RO systems are of the highest quality and rank among the best for efficiency, maintenance requirements, membrane quality, and overall cost-effectiveness.

At Simply PÜR, we understand the importance of tailored solutions. That’s why we offer a diverse range of drinking water filtration solutions to meet your various requirements. Our options include a variety of Pentair filters and alkaline reverse osmosis systems. Our ultimate goal is to provide customized choices that precisely address your unique needs.


For Long Island residents concerned about the quality of their drinking water, investing in a reverse osmosis system is a practical decision. It offers the assurance of clean and safe water for you and your family. Remember, seeking advice from water experts or professionals ensures the selection of the most suitable system for your specific needs.

At Simply PÜR, we’re here to help. That’s why we offer a free water quality analysis[1] and consultation to assess your water quality. Additionally, we provide optional 3rd party laboratory Testing (Fees Apply) for a more comprehensive evaluation. We’re committed to helping you make the best choice for your drinking water needs.

[1] Our water quality analysis is free if you move forward on the purchase and installation of a system or solution.

About Simply PÜR™ Water Filtration Services

Living in and serving the Long Island community, we strive to make sure everyone has access to clean, healthy water. We have the experience, knowledge, and industry-leading technology to provide clean water solutions for water impurities, contaminants, hard water, bad tasting/odors, well water, acidity & pH regulations.

Proud members of the WQA (Water Quality Association), and the EWQA (Eastern Water Quality Association), we adhere to strict guidelines and the WQA code of ethics. As a Pentair True Blue Partner and Authorized Distributor of Pentair Products, there’s nothing comparable to the performance, and efficiency of our whole house purification systems, water softeners, neutralizers, whole-house filters, and alkaline reverse osmosis systems for drinking in the convenience of your home.

NSF Water Filtration System
Pentair Water Filtration System

Our products are all NSF / ANSI certified, meeting the highest safety standards and quality performance. Providing our community with only the best experience of high quality water that’s Simply PÜR from our family to yours!

Simply PÜR utilizes accurate testing methods before and after system installation, as well as annual maintenance of all your water treatment equipment. Our Revolutionary Custom Built Water Treatment systems upon the completion of a Free In-Home Water Analysis, or an in-depth Comprehensive Water Analysis of your choice sent to our Certified Laboratory.

Customers Frequently Ask..

The answer to this question depends on which kind of drinking water you’re talking about. There are multiple agencies responsible for regulating water quality in the U.S., and there are some who are more critical about the way it’s handled.


The Environmental Protection Agency (EPA) is in charge of overseeing the water that comes out of your tap. The U.S. Food and Drug Administration (FDA) oversees and regulates the quality of bottled water.


Individual states are responsible for regulating water that is bottled and sold within their borders. Finally, your municipality must make sure it is following federal and state standards regarding water quality.


The EPA does not regulate private wells, and rules for testing differ from state to state. In many cases, it is the homeowner’s responsibility to make sure their well water is safe.

Certain things can affect the flavor, odor, and appearance of your tap water, not all of them are necessarily harmful.


Many people with public water can taste the chlorine, although the most noticeable problems tend to come from private wells. Contaminants like sulfur can impact the smell, while iron will cause discoloration and staining.


The overall amount of total dissolved solids (TDS) in your tap water will definitely affect the taste, smell, and appearance. While many of these issues are not serious concerns, they can certainly be a nuisance. Water filtration systems, including a high-efficiency water softener to reduce hardness, can provide solutions.

This process is called “reverse” osmosis because the pressure forces the water to flow in the reverse direction (from the concentrated solution to the dilute solution) to the flow direction (from the dilute to the concentrated) in the process of natural osmosis. RO removes ionized salts, colloids, and organic molecules down to a molecular weight of 100.


You can get a whole-house RO, but more commonly, a point-of-use RO system would be on your countertop or installed under the sink. They’re great for treating water for cooking and drinking, but they don’t usually produce large amounts of treated water — more like 3 to 10 gallons a day. For that reason, typically people choose to install RO-treated faucets in the most popular areas of the home such as kitchens and bathrooms, as opposed to installing it for every drinking tap. Just like any other kind of filter technology, reverse osmosis systems require regular maintenance. That includes periodically replacing the unit’s prefilters, postfilters, and membrane modules.

Due to the media attention Flint, Michigan, received over its water crisis, a lot of people have questions about lead in public water systems around the U.S.


Lead (as well as copper) typically enters the public supply by leaching into water from corroded fixtures and outdated plumbing. Homes built before 1986 will likely have plumbing with copper pipes using solder that may contain lead.


Lead can cause serious negative health effects, especially in children. The challenge is that it is undetectable by human senses. You can check with your local water authority for information about lead levels, but it’s important to note that the CDC and EPA say there’s no level of lead recognized as safe for consumption.


If you have concerns about the presence of lead in your water, you can have it tested in a state-certified laboratory. You can also read more in our article on lead in drinking water.

Softening hard water can mitigate many of its objectionable effects. Water softening can be done either at point of entry or point of use. One of the unique advantages offered by point-of-use water softening is the opportunity for homemakers to have either hard or soft water for drinking. This choice is not available if the water supply is softened municipally. Hardness minerals can be reduced in water to make it “softer” by using one of three basic means:

  • Chemical softening—lime softening, hot and cold; lime-soda softening
  • Membrane separation softening—Nano filtration
  • Cation exchange softening—inorganic, carbonaceous, or organic base exchangers
  • Softening water for home needs is done almost exclusively through the use of cation exchange.

Contact Us - Lets Get In Touch!

[contact-form-7 id="8" /]
Customer Testimonials

"Absolutely amazing service from beginning to end. Trustworthy and reliable to work with. And the water taste!! It’s incredible the difference after we installed our water filtration system throughout our house. Also knowing my kids are drinking the purest of water is the biggest game changer. I would absolutely recommend Vinny and staff."

Randi Demetriou 

"We had a recent installation done by Vinny at Simply PUR and we couldn’t be happier. Vinny is reputable, reliable, efficient and the service is great. The water is so clean and tastes great, we don’t have to think twice about what is coming out of our faucet! Thank you Vinny!

Mike D.