Point-of-Use Drinking Water Solutions
Reverse Osmosis Systems
Drinking Water That Tastes Better Than Bottled
Reverse osmosis is the most effective point-of-use drinking water technology available for residential and commercial applications. We design and install RO systems matched to your water source and household needs—not a box off a shelf. Whether you want high-flow on-demand drinking water or an RO system with instant hot water, we configure the right setup based on what’s actually in your water.
Why Reverse Osmosis
What RO Does That Other Filters Can’t
Standard filters improve taste and catch sediment. Reverse osmosis goes further—pushing water through a semipermeable membrane that reduces dissolved contaminants most other filters leave behind.
Dissolved Contaminant Reduction
RO membranes reduce dissolved solids, heavy metals, and other contaminants that pass right through standard carbon or sediment filters. This includes lead, arsenic, fluoride, nitrates, and more.
Better Taste for Cooking & Drinking
Customers often tell us their water “tastes better than bottled water” after we custom-build the right system. Coffee, tea, ice, and recipes all benefit from cleaner starting water.
Reduce Plastic Bottle Waste
Households spending money on bottled water or pitcher filters can switch to on-demand RO water from their own tap. Better quality, lower long-term cost, and no plastic waste.
Residential & Commercial
We install RO systems for homes, offices, restaurants, and businesses. Whether you need a single under-sink unit or a commercial water cooler package, we design for the application.
PFAS & Emerging Contaminants
Concerned about PFAS or other emerging contaminants in your drinking water? RO is one of the most effective technologies for reducing per- and polyfluoroalkyl substances at the point of use.
Added Protection Layer
Even if your whole-house system treats your water, an RO at the kitchen sink provides an additional barrier for the water your family actually drinks and cooks with.
System Options
Residential RO Systems We Install
We offer two primary RO configurations for homes. Both deliver exceptional drinking water quality—the right choice depends on your household’s priorities.
High-Flow Reverse Osmosis
A fast, modern RO system designed for strong on-demand flow. No waiting for a tank to refill—water is available when you need it. Improved efficiency compared to many traditional tank-style RO systems.
- Strong on-demand flow for cooking, filling pots, and drinking
- Compact design fits under most kitchen sinks
- Improved efficiency compared to many traditional tank-style systems
- Available with UV light built-in—a final disinfection step that helps inactivate microorganisms for added peace of mind
RO with Instant Hot Water
RO drinking water plus instant hot water convenience in one system. Perfect for households that use hot water frequently for tea, coffee, oatmeal, soups, or cooking.
- RO-purified water at room temperature and hot on demand
- Great for tea, coffee, and clean cooking
- Eliminates waiting for a kettle or microwave
- Single faucet handles both functions
Systems We Recommend
RO Systems We Commonly Install
Every home is different, and we’re not limited to a single brand or model. That said, these are three systems we frequently recommend based on performance, reliability, and the results we see in Southwestern PA water conditions. We configure each installation based on your actual water chemistry.
Most Popular
Cesare’s — High-Flow RO
Fast On-Demand Drinking Water, No Tank Required
Our go-to for households that want strong, on-demand RO water without waiting for a tank to refill. Our High-Flow RO delivers 600 gallons per day through an 8-stage filtration process—and its tankless design saves significant space under the sink. A smart faucet displays real-time water quality and filter life so you always know where things stand.
- Capacity: 600 GPD with 2:1 pure-to-drain ratio
- Filtration: 8-stage process reduces TDS, heavy metals, PFAS, and more
- Design: Compact tankless—saves up to 70% under-sink space
- Smart Faucet: LED display shows TDS level and filter life
- UV Option: Available with UV light that helps inactivate microorganisms
- Certifications: NSF/ANSI 42, 53, 58 & 372
Ideal for: Families, cooking enthusiasts, and anyone replacing bottled water or pitcher filters. Pairs with pH Boost or Mineral Add-Back finishing.
RO + Hot Water
Cesare’s — Instant Hot RO
Purified Water & Instant Hot Water in One System
Combines reverse osmosis purification with instant hot water—adjustable from 104°F to 203°F—all from a single smart faucet under your sink. No more waiting for a kettle. It delivers 600 GPD capacity with a 5-in-1 integrated filter, and includes child lock safety features and temperature display right at the faucet.
- Capacity: 600 GPD with 2:1 pure-to-drain ratio
- Hot Water: Adjustable 104°F–203°F, on demand from the faucet
- Filtration: 5-in-1 integrated filter with tankless design
- Smart Faucet: Dual screens display TDS, temperature, and filter status
- Safety: Child lock, anti-scald protection, and automatic monitoring
- Filter Life: Up to 12 months per filter
Ideal for: Tea and coffee drinkers, households with infants, and anyone who wants instant hot purified water for cooking, oatmeal, or soups. Pairs with pH Boost or Mineral Add-Back finishing.
Home & Office
Cesare’s — Bottleless Water Cooler
Cold, Ambient & Hot RO Water — No Bottles to Replace
Our Bottleless Water Cooler connects directly to your water line and delivers mineral-enhanced reverse osmosis water at three temperatures: cold (41°F), ambient, and hot (194°F). Dual UV sterilization helps inactivate microorganisms for added peace of mind. No more ordering, storing, or lifting 5-gallon jugs—just continuous purified water on demand.
- Temperatures: Cold (41°F), ambient, and hot (194°F)
- UV Sterilization: Dual UV helps inactivate microorganisms
- Connection: Plumbed directly to your water line—no bottles
- Mineral Enhanced: Built-in remineralization for improved taste
- Maintenance: Leak-free twist-and-replace filter design
- Warranty: 24-month manufacturer warranty + our installation support
Ideal for: Offices, break rooms, medical practices, and homes that want a freestanding cooler with RO-quality water. Eliminates bottled water cooler costs entirely.
These are systems we frequently recommend—not an exclusive list. We evaluate your water chemistry, household needs, and budget to recommend the configuration that makes the most sense for your situation. All installations include professional setup, testing, and our local support from Murrysville.
Finishing Options
Customize Your Water’s Taste
After the RO membrane does its job, a finishing stage fine-tunes the taste of your drinking water. We offer two options—your preference.
pH Boost
Smoother, more balanced taste
A pH-enhancing post-filter that raises the water’s pH after the membrane stage. Many customers prefer the smoother, more balanced mouthfeel this provides compared to straight RO water.
Mineral Add-Back
Crisp, spring-water mouthfeel
A remineralization post-filter that adds trace minerals back into the water after the membrane stage. Customers who prefer a crisp, spring-water-style taste tend to gravitate toward this option.
Both finishing options are about taste preference—we help you choose during consultation. One finishing option is included per system.
For Businesses
Commercial RO Water Cooler Packages
Offices, restaurants, medical practices, and other commercial spaces benefit from on-site RO water. Our commercial package includes everything you need.
RO Filtration
Commercial-grade reverse osmosis sized for your water demand and usage patterns.
Built-In UV Disinfection
A final disinfection step in the cooler that helps inactivate microorganisms—designed to reduce microbial risk when properly maintained.
Your Choice of Finishing
pH Boost or Mineral Add-Back—same options as residential. You pick the taste profile your team or customers will enjoy.
Professional Installation & Support
We handle the full install, plumbing connections, and ongoing maintenance. Local service from Murrysville—not a national call center.
Eliminate bottled water cooler costs. Provide better water for your employees and customers.
Our Process
How We Choose the Right RO for You
We don’t just hand you a box. We test your water, understand your needs, and configure a system that makes sense for your situation.
Water Testing
We test your water at the tap where the RO will be installed. Results tell us what’s in your water and what the membrane needs to handle—this affects system configuration and pre-filtration requirements.
System Recommendation
Based on your water chemistry, household size, and preferences, we recommend the right RO configuration. High-flow or hot water? UV add-on? pH Boost or Mineral Add-Back? We walk through the options honestly.
Professional Installation
We install the system under your sink with proper plumbing connections, dedicated faucet, and drain line. Everything is tested for flow, taste, and leak-free operation before we leave.
Ongoing Support & Maintenance
RO systems need periodic filter and membrane changes. We stay available for maintenance, support, and questions. Based in Murrysville—not a national call center. Systems backed by up to a 10-year warranty (terms apply).
Works With Your Whole-House System
RO as Part of a Complete Solution
Reverse osmosis handles your drinking water. But what about the water you shower in, wash clothes with, and run through your water heater? Many homes benefit from both whole-house treatment and a point-of-use RO.
Water Softeners
Hard water creates scale buildup, soap scum, and dry skin. A whole-house softener handles these problems throughout the home, while the RO delivers premium drinking water at the kitchen sink.
Iron & Manganese Removal
Orange stains, black deposits, and metallic taste from iron and manganese require whole-house treatment. An RO at the sink adds another layer of protection for your drinking water.
Sulfur & Hydrogen Sulfide
Rotten egg smell requires whole-house oxidation-based treatment. Once the sulfur is handled at point of entry, an RO at the kitchen provides the cleanest possible drinking water.
Coverage Area
RO Installation Throughout Southwestern PA
We install residential and commercial reverse osmosis systems across our entire 13-county service area.
📍Allegheny County
📍Butler County
📍Washington County
📍Fayette County
📍Indiana County
📍Armstrong County
📍Beaver County
📍Lawrence County
📍Mercer County
📍Somerset County
📍Cambria County
📍Greene County
🏠 Based in Murrysville — Professional RO installation and service throughout the region.
Common Questions
Reverse Osmosis FAQs
What does reverse osmosis actually remove?
RO membranes reduce a wide range of dissolved contaminants including lead, arsenic, fluoride, nitrates, sodium, chloride, and total dissolved solids (TDS). They also reduce PFAS, which is an increasing concern in many water supplies. Pre-filters handle sediment and chlorine before the membrane, and a post-filter polishes taste. The specific contaminant reduction depends on your water chemistry and the membrane configuration.
Is RO water safe to drink?
Yes. Reverse osmosis drinking water is safe and widely used in homes, restaurants, and medical facilities. Some people ask about the removal of minerals—the water you drink is a minor source of dietary minerals compared to food. If you prefer a mineral taste, our Mineral Add-Back finishing option adds trace minerals back into the water after the membrane stage.
Will I have good water pressure from the RO faucet?
Our high-flow RO systems are designed for strong on-demand flow—better than many traditional tank-style RO systems. You won’t be waiting for a small tank to refill. We size the system for your household and verify flow performance during installation.
Do I need an RO if I already have a whole-house filter?
Whole-house systems are designed to treat all the water entering your home—showers, laundry, water heaters. They handle issues like hardness, iron, and chlorine. An RO at the kitchen sink goes further by reducing dissolved contaminants that whole-house systems aren’t designed to catch. Think of it as an additional barrier specifically for the water you drink and cook with.
What about RO water waste?
All RO systems produce some concentrate (reject water) as part of the filtration process. Our high-flow systems are designed with improved efficiency compared to many traditional tank-style systems, meaning less water goes to drain per gallon produced. We can also discuss options for routing concentrate water to other uses.
How often do filters and membranes need replacement?
Pre-filters and post-filters typically need replacement every 6-12 months depending on usage and incoming water quality. The RO membrane itself usually lasts 2-3 years. We establish a maintenance schedule based on your specific system and water conditions, and remain available for filter changes and service.
Can you install an RO in my business?
Yes. We install commercial RO water cooler packages for offices, restaurants, medical practices, and other commercial spaces. The package includes RO filtration, built-in UV disinfection in the cooler, and your choice of finishing option. We handle installation, plumbing, and ongoing maintenance.
What’s the difference between pH Boost and Mineral Add-Back?
Both are post-membrane finishing stages that adjust the taste of your RO water. pH Boost raises the water’s pH for a smoother, more balanced taste. Mineral Add-Back introduces trace minerals for a crisp, spring-water mouthfeel. It’s a taste preference—we help you decide during your consultation.
Can you fix or upgrade my existing RO system?
Yes. We service RO systems regardless of who installed them. Common issues include low flow, bad taste (usually expired filters or membrane), leaks, and systems that were never properly configured for the incoming water chemistry. We evaluate the current setup and recommend repair or replacement based on what makes sense.
How do I get started?
Call us at 724-708-8816 or fill out the form below. We’ll schedule a water test and consultation at your home or business. We test your water, explain results in plain English, and recommend the right RO configuration for your situation. No guessing, no pressure.
Get Started
Get an RO Recommendation
Stop spending money on bottled water or pitcher filters that don’t do the job. Contact us for a water test and custom RO recommendation based on your water source, household, and preferences.
724-708-8816
support@cesareswater.com
Southwestern PA — 13 Counties
24/7 Emergency Service Available
BusinessRate Award Winner
Drinking Water That Tastes Better Than Bottled
Custom-engineered reverse osmosis systems matched to your water chemistry. Professional installation. Local support. Up to 10-year warranty.