9-Stage Reverse Osmosis Purification in Chicago
Nine filter stages under your kitchen sink – from sediment and chloramines to lead, then minerals back in.
In Chicago, tap water can pick up lead, chloramines, 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.
Handles Chicago Chloramines
Chicago disinfects its water with chloramines. Our carbon block stages reduce them 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 chloramine. 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
1
Free Water Test
We test lead, TDS, pH, hardness, and chloramine at your tap. Results are shown on-site, and we explain each number.
2
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.
3
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.
- Free water test at your Chicago address
- Configured for lead, chloramines, and hardness
- Chicago-based technicians, no subcontractors
- Documented output test after every visit
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.