Reverse Osmosis Systems
Premium drinking water right from your tap. Multi-stage filtration for the cleanest water possible.
Professional Reverse Osmosis Systems in Orange County
Reverse osmosis (RO) is the gold standard for drinking water purification. An RO system forces water through a semi-permeable membrane that removes up to 99% of dissolved contaminants, including lead, arsenic, fluoride, nitrates, pharmaceuticals, and microplastics. The result is exceptionally clean, great-tasting drinking water directly from your tap.
KCB Plumbing installs under-sink and whole-home reverse osmosis systems throughout Orange County. The most popular option is an under-sink RO system with a dedicated faucet — it provides purified drinking and cooking water without the expense of treating water used for showers and laundry.
Modern RO systems have improved significantly in efficiency. Older systems wasted 3-4 gallons for every gallon of purified water produced. Current high-efficiency models have a 1:1 or even better ratio, reducing water waste and operating costs. We install systems that balance purification performance with water efficiency.
Need Reverse Osmosis Systems?
Call for a free over-the-phone estimate. Upfront pricing, no surprises.
(714) 894-6520Our Process
How It Works
Water Analysis
We review your water quality to confirm RO is the right solution and determine the ideal system configuration.
System Selection
We recommend a system based on your water quality, daily usage, and whether you want under-sink or whole-home coverage.
Installation
The system is installed under your kitchen sink with a dedicated RO faucet (for under-sink models). We connect the drain line and install the storage tank.
Initial Flush
The system is flushed according to manufacturer specifications before first use.
Water Quality Verification
We test the purified water with a TDS meter to verify the system is performing to specification.
Why Choose KCB for Reverse Osmosis Systems
- Upfront flat-rate pricing — you approve before we start
- Licensed (#604044), insured, and bonded
- 99.9% on-time guarantee
- 4.9 stars across 50+ Google reviews
- 27+ years serving Orange County
- Workmanship guarantee on all repairs and installations
What Affects Pricing
We provide transparent, upfront pricing before any work begins. Here are the factors that affect the cost of reverse osmosis systems:
- System type (under-sink vs. whole-home)
- Number of filtration stages
- Additional connections (refrigerator, ice maker)
- Required plumbing modifications
- Ongoing filter and membrane replacement costs
Common Questions
Reverse Osmosis Systems FAQ
What does reverse osmosis remove from water?
RO removes up to 99% of dissolved solids including lead, arsenic, fluoride, chlorine, chloramines, nitrates, sulfates, pharmaceuticals, pesticides, and microplastics. It's the most comprehensive residential water purification technology available.
Does RO water taste different?
Yes — most people notice a significant improvement. RO water has a clean, pure taste because the membrane removes the dissolved minerals, chlorine, and organic compounds that affect flavor. Many families report that their coffee, tea, and cooking taste better with RO water.
How often does an RO system need maintenance?
Pre-filters and post-filters should be replaced every 6-12 months. The RO membrane itself lasts 2-3 years under normal use. We offer maintenance plans that include all filter and membrane replacements on a set schedule.
Does reverse osmosis waste a lot of water?
Modern high-efficiency RO systems produce 1 gallon of purified water for every 1-2 gallons of wastewater — much better than older systems. The wastewater goes to drain and can be captured for plant watering if desired. The efficiency improvement over the past decade has been significant.
Can I connect my RO system to my refrigerator?
Yes, we can run a line from your RO system to your refrigerator's water and ice maker connection. This gives you purified water and ice without a separate filter in the fridge.
Reverse Osmosis Systems Throughout Orange County
We provide reverse osmosis systems services across all of Orange County. Click your city to learn about local plumbing needs:
Other Water Purification Services
Water Filtration Installation
Cleaner, healthier water from systems tailored to Orange County homes. Whole-home and under-sink solutions that remove impurities and protect your plumbing.
Learn more →Water Softening Solutions
Orange County water is 15–25 gpg (very hard). Our softening systems prevent scale buildup, protect appliances, and soften skin and hair.
Learn more →System Maintenance & Filter Replacement
Keep your water systems running perfectly. Regular maintenance and timely filter changes for optimal performance.
Learn more →Related Services
Explore other plumbing services that complement reverse osmosis systems.
Residential Plumbing
Complete residential plumbing services from new construction to everyday repairs. We handle everything so your home runs smoothly.
View services →Drain Cleaning
Professional drain cleaning that goes beyond the surface. We clear blockages and keep your drains flowing for the long term.
View services →Leak Detection & Repair
Hidden leaks waste water and cause damage. Our advanced detection finds leaks fast, and our repairs are built to last.
View services →Need Reverse Osmosis Systems?
Call us for a free over-the-phone estimate. We'll get your plumbing taken care of right.