9-Stage Reverse Osmosis Purification in Chicago

Nine filter stages under your kitchen sink – from sediment and chlorine to lead, then minerals back in.

In Chicago, tap water can pick up lead, chlorine, and sediment on its way to your sink. Our 9-stage reverse osmosis system treats it right at the tap.

We install 9-stage reverse osmosis purification in Chicago homes, condos, and offices. Every install starts with a free water test at your address.

Then we fit the PEL75 under your kitchen sink and add a dedicated filtered-water tap. As a local water purification company, we also service every stage for you.

What 9-Stage Reverse Osmosis Does for Your Water

Removes Lead and Heavy Metals

The RO membrane is the main barrier against lead, arsenic, and other heavy metals. It removes up to 98% of dissolved solids.

Reduces Chicago Chlorine

Chicago disinfects its water with chlorine. Our carbon block stages reduce it before the membrane, so taste and odor improve.

Puts Minerals Back

After purification, one stage adds calcium, magnesium, potassium, and sodium back. Another stage raises pH with alkaline calcite.

Fits Under Your Sink

The PEL75 fits inside standard kitchen cabinets, even in vintage Chicago apartments. A dedicated tap delivers the purified water.

How 9-Stage Reverse Osmosis in Chicago Works

Every Install Starts With a Free Water Test at Your Address

We test your tap for lead, TDS, pH, hardness, and chlorine. You see the results on-site before we recommend anything.

9-stage reverse osmosis in Chicago then treats your water in this order:

Stage 1 removes sediment like sand, silt, and rust.
Stages 2 and 3 are carbon blocks that reduce chlorine, chloramines, and VOCs.
Stage 4 is the RO membrane, the main barrier against lead, arsenic, bacteria, and heavy metals.
Stages 5 and 6 add minerals back and raise pH.
Stages 7 and 8 are the infrared ceramic and shungite stages.
Stage 9 is a final carbon polish before the tap.

See each stage in detail on our filters and filtration stages page.

Purified Water for Drinking, Cooking, Coffee, and Tea

Use the dedicated tap for drinking water, cooking, coffee, and tea. Many Chicago families also use it for pets, plants, and aquariums.

Smart sensors flush the membrane on their own and show real-time TDS. You can check your water purity at any time.

Treats Water at the Final Tap in Older Chicago Buildings

Pre-war two-flats in Lincoln Square and Andersonville often have galvanized or lead-soldered plumbing. Those pipes can add metals after the city main.

Our under-sink system treats water at the final tap, after every pipe in the building. It connects to the cold water line inside your kitchen cabinet.

Pair 9-Stage Reverse Osmosis With Whole-House Filtration

Under-sink reverse osmosis treats the water you drink and cook with. For showers, laundry, and appliances, we add whole-house filtration at the main line.

The whole-house stage also pre-filters water before it reaches the RO membrane.

Nine stages, one kitchen tap, and water quality you can check yourself on the TDS display.

Getting 9-Stage Reverse Osmosis Installed in Your Chicago Home

Single-Visit Installation Under Your Kitchen Sink

Free Water Test

We test lead, TDS, pH, hardness, and chlorine at your tap. Results are shown on-site, and we explain each number.

9-Stage Installation

Our technician installs all 9 stages under your kitchen sink, in order. The dedicated filtered-water tap goes in at the same visit.

Output Testing and Records

We flush the system and compare TDS and pH before and after. You keep the results as a baseline for every future visit.

Scheduled Service Keeps All 9 Stages Working

Filter Replacement Reminders

We track your system and contact you when a stage is due. Our technician replaces each stage in the right order.

Full-System Check

Every visit covers all 9 stages, not just the ones that are due. We leave your Chicago system working at full spec.

Same-Day Response

We are on W Higgins Ave and carry common parts. For urgent issues, we can often respond the same day you call.

Performance Records

At each visit, we record output TDS, pH, and membrane rejection rate. You get a water quality record over the life of your system.

Why Chicago Homeowners Choose ProEcoLife

A local team that tests, installs, and services your 9-stage reverse osmosis system.

What Our Customers Say

    
 
 
       Posted on Google  
   
   Damian Kluk 
 
 
 
 Trustindex verifies that the original source of the review is Google. Pro Eco performed water testing and a well-water bacteria disinfection service at my home. They clearly explained what to expect throughout the process and were very communicative from start to finish. Their team was knowledgeable about water systems and to answer my questions. I had a very positive experience with this company. I will be calling them next year for another service.
  
 
      Posted on Google  
   
   elzbieta bednarz 
 
 
 
 Trustindex verifies that the original source of the review is Google. Professional, friendly, great service, perfect water.Thank you.
  
 
      Posted on Google  
   
   Tomek Lasota 
 
 
 
 Trustindex verifies that the original source of the review is Google. We have been using ProEcoLife for at least 14 years. Back when we were still living in Des Plaines, we installed our first RO Water Filtration system with Karol Dołęga. We used this water for many years, and later when we moved to Mount Prospect, Pro Eco Life uninstalled, stored, and installed the system in our new home.
This is a company you can truly rely on. They remember on their own when the filters need to be replaced. They haven't disappeared from the market after all these years, and most importantly, they have truly great water.
People who come to our home ask where we get such good water. ProEcoLife water flows from every faucet, filtered through a Reverse Osmosis Water Filtration system designed and installed by ProEcoLife. That system produces water that is, first and foremost, healthy.
LOVE IT!
Recommended from the bottom of my heart to everybody!
  
 
      Posted on Google  
   
   Jakub Ligeza 
 
 
 
 Trustindex verifies that the original source of the review is Google. At Anchor Express Inc., we used to spend thousands of dollars every year on bottled drinking water for our office. Aside from the cost, we were increasingly concerned about the amount of plastic waste and the potential health concerns associated with storing and consuming water from plastic bottles.

PRO ECO LIFE came in, analyzed our needs, and installed a commercial drinking water filtration system for our office. The difference has been outstanding. We now have a constant supply of clean, great-tasting drinking water for our employees without the need to purchase, store, or dispose of bottled water.

What we appreciate most is their ongoing service. Every six months, their team returns to replace filters, inspect the system, and perform preventative maintenance, ensuring everything continues to operate at peak performance.

The investment has been worth every penny. Not only are we saving money, but we have eliminated our dependence on bottled water and significantly reduced our plastic consumption. Our employees enjoy high-quality filtered water every day, and we have peace of mind knowing the system is professionally maintained.

PRO ECO LIFE has been knowledgeable, professional, responsive, and a pleasure to work with. We highly recommend them to any business or homeowner looking for a long-term water quality solution.
  
 
      Posted on Google  
   
   Jakub Lgz 
 
 
 
 Trustindex verifies that the original source of the review is Google. I have been a customer of PROECOLIFE for over 7 years, and I can honestly say they are one of the best service companies I have ever worked with.

My home is supplied by a private well with extremely challenging water conditions. The raw water contained high iron levels, arsenic, heavy metals, dissolved solids, and other contaminants. Drinking the water directly from the well was simply not an option.

The team at PROECOLIFE thoroughly analyzed my water and designed a complete treatment system tailored specifically to my property. They installed a comprehensive solution including sediment filtration, arsenic removal, iron removal, water softening, whole-house reverse osmosis, UV sterilization, pH correction, a booster pump system, and a dedicated drinking water RO system in the kitchen.

The results have been nothing short of incredible. After installation, I had my water independently tested by a private laboratory. The lab technicians told me they rarely see drinking water this clean and this pure. My whole-house RO system consistently produces approximately 4 ppm TDS water, while my kitchen drinking water system produces approximately 1–2 ppm TDS water. The quality is outstanding.

What truly separates PROECOLIFE from other companies is their customer service. Karol, Maciej, and Konrad are top-quality professionals who genuinely care about their customers and take pride in their work. Mrs. Sylwia in customer service is always professional, responsive, knowledgeable, and a pleasure to work with.

Over the last seven years, whenever there was an issue or downtime, PROECOLIFE responded immediately. In many cases, they had a technician at my house within 30 minutes to diagnose and resolve the problem. That level of support is almost unheard of today.

Thanks to PROECOLIFE, my family has clean, safe, healthy drinking water every day. Their technical knowledge, professionalism, responsiveness, and commitment to customer satisfaction are second to none.

I would recommend PROECOLIFE without hesitation to anyone looking for water treatment, filtration, reverse osmosis, arsenic removal, or well water solutions.

Thank you to the entire PROECOLIFE team for your outstanding work and continued support over the years!
  
 
      Posted on Google  
   
   Pawel Wiktorko 
 
 
 
 Trustindex verifies that the original source of the review is Google. Zainwestowałem w system ProEcoLife (filtr na cały dom + RO w kuchni) i jestem w 100% zadowolony. Woda smakuje świetnie, a instalacja działa bez zarzutu. Chciałbym jednak szczególnie wyróżnić obsługę klienta. W trakcie codziennego użytkowania, gdy tylko potrzebowałem wsparcia, szybkiej porady lub miałem jakiekolwiek pytania techniczne, firma stawała na wysokości zadania. Pełen profesjonalizm i dbałość o klienta na każdym etapie. Gorąco polecam!
  
 
      Posted on Google  
   
   Wesley Rakowski 
 
 
 
 Trustindex verifies that the original source of the review is Google. Just swapped out our old water filter for the PEL75. It actually makes a noticeable difference in how our tap water tastes, and it’s great for brewing coffee or tea without that weird chlorine aftertaste. Professionally installed, very friendly and knowledgeable service. Definitely recommend & worth it.
  
 
      Posted on Google  
   
   Anna Baranski 
 
 
 
 Trustindex verifies that the original source of the review is Google. Bardzo profesjonalna  obsługa klienta
Od ponad dziesięciu lat posiadamy system filtrujący firmy Proecolife
Nigdy nie mieliśmy najmniejszych problemów z tym systemem.
Obsługa serwisowa i wymiana filtrów za każdym razem przeprowadzana jest bardzo sprawnie , szybko i bez jakichkolwiek niedogodności wobec klienta.
Bardzo polecam firmę Proecolife
  
 
      Posted on Google  
   
   Edyta Ksiag 
 
 
 
 Trustindex verifies that the original source of the review is Google. We absolutely love our new water system from PROECOLIFE! We now have it in our home and both of our offices, and it has been amazing. The water tastes great, and we are saving so much money by no longer buying plastic water bottles. Their customer service has also been excellent, the owner truly cares and wants to make sure customers are happy, which we really appreciate. Highly recommend!

9-Stage Reverse Osmosis FAQs for Chicago Homeowners

What does 9-stage reverse osmosis remove from tap water?

It removes sediment, chlorine, chloramines, VOCs, lead, arsenic, bacteria, and other heavy metals. The RO membrane removes up to 98% of dissolved solids.

Does reverse osmosis remove lead from Chicago tap water?

Yes, the RO membrane is the main barrier against lead. Our RO systems remove up to 98% of dissolved lead before it reaches your glass.

How is a 9-stage system different from a 5-stage reverse osmosis system?

It does more after purification. Stages 5 to 9 add minerals back, raise pH, and polish the water before it reaches your tap.

Does reverse osmosis remove healthy minerals from water?

Yes, the membrane removes minerals along with contaminants. That is why stages 5 and 6 add calcium, magnesium, potassium, and sodium back and raise pH.

How long does a 9-stage reverse osmosis installation take?

A typical Chicago under-sink installation is done in a single visit. That includes the dedicated tap, flushing, and an output test.

How often do reverse osmosis filters need to be replaced?

Each stage has its own schedule based on your water and use. Carbon and sediment stages are usually replaced every 6 to 12 months, and we contact you when one is due.

Will a 9-stage reverse osmosis system fit under my kitchen sink?

In most cases, yes. The PEL75 is compact enough for kitchen cabinets in vintage Chicago apartments, and we check space, water line, and drain first.

Can I install reverse osmosis in a rented Chicago apartment?

Often, yes. The system installs inside your kitchen cabinet and connects to the cold water line without changes to shared building plumbing.

Does a reverse osmosis system waste water?

Some water is used to flush contaminants away from the membrane. Our system includes a high-efficiency pump that reduces wastewater.

How do I know my reverse osmosis system is working?

You can check the real-time TDS display at any time. We also test TDS and pH before and after at every service visit.

9-Stage Reverse Osmosis Purification – Available Across Chicago Through ProEcoLife

From Norwood Park to Bridgeport, we install purified water at your kitchen tap.

Our office is at 7109 W Higgins Ave on the Northwest Side. We have installed water purification systems in Chicago since 2014.

Call (312) 889-8888 or book a free water test, and we will show you what your water needs. You can also read about the city’s Lead Safe Chicago program.