Undersink RO Systems in Houston
5 Stage Reverse Osmosis Drinking Water System? Get 9 Stages
Aqua General installs the AquaGuard 9-stage undersink RO system in Houston homes. We test your water on site for free, so you get the right system.
- 9 filtration stages, not 5, under your kitchen sink
- Cuts chlorine, chloramine, lead, arsenic and more
- Free on-site water test before you buy
TCEQ licensed and WQA certified. Houston installs going back to 1978.
Prefer to talk? Call (713) 664-4601
Get your RO system quote
Tell us where you are and what you need. We'll set up your free on-site water test.
Why Houston homes pick our undersink RO
More stages than a 5-stage unit
The AquaGuard undersink system uses 9 stages to reduce a wide range of contaminants in your tap water.
Water that tastes better
Better water means better coffee, tea and juice, and no more hauling bottled water home.
Minerals added back
The 6th stage Bio-Sure filter puts beneficial minerals back into your drinking water.
Free water test first
We test your water at your home at no charge, then recommend what your water actually needs.
Service after the sale
We keep a full inventory of replacement parts and handle filter and membrane changes on many brands.
Licensed and certified
TCEQ Class III Water Treatment Specialist licensed and Water Quality Association certified.
Inside the AquaGuard 9-stage undersink RO system
Many shoppers start by looking for a 5 stage reverse osmosis drinking water system. Our AquaGuard undersink RO goes further with 9 stages, including a catalytic carbon filter for chloramine and a Bio-Sure stage that adds beneficial minerals back in.
It installs under your kitchen sink and makes 50 gallons per day. If reverse osmosis is more than your water needs, we also offer the AquaGuard CBC 0.5 micron carbon block undersink filter.
- 50 gallon per day undersink reverse osmosis system
- Reduces or removes chlorine, lead and other metals, organic chemicals and pesticides
- Reduces or removes hexavalent chromium, arsenic, inorganics, viruses and alpha particles
- Special catalytic carbon filter for chloramine reduction
- 6th stage Bio-Sure filter adds beneficial minerals back in
- AquaGuard CBC 0.5 micron carbon block filter available as a simpler option
- Service, repair and filter or membrane replacement on RO systems from many brands
- Superior limited life-time manufacturer's warranties
Houston area water treatment since 1978
“Great company, great products, great service! Thanks, Aqua General!”
“...Aqua General went out of their way to make sure we received the parts...”
“...for some 15 years, and I couldn't be happier with their service.”
How it works
Send the form
Tell us your ZIP code and what you need. We'll reach out to go over your water and your kitchen setup.
Free on-site water test
A technician tests your water at your home at no charge and recommends the right drinking water system.
Install and enjoy
We install the system under your sink, show you how it works, and handle filter changes later.
Frequently asked questions
Do you sell a 5-stage reverse osmosis system?
Our AquaGuard undersink reverse osmosis system uses 9 stages, which covers more than a standard 5-stage setup. If you already own a 5-stage unit, we service and repair RO systems from many brands.
What does an RO system cost?
Pricing depends on your water and your setup. We test your water on site for free and then give you a quote for the right system.
How much water does the system make?
The AquaGuard undersink reverse osmosis system produces 50 gallons per day.
Does it take out chloramine, and does it strip minerals?
It has a special catalytic carbon filter for chloramine removal, and the 6th stage Bio-Sure filter adds beneficial minerals back into the water.
Do you serve my area?
We serve the Greater Houston area: Harris, Fort Bend, Galveston, Brazoria and Montgomery Counties, plus partial coverage in Chambers, Waller and Wharton Counties.
Can you service the RO system I already have?
Yes. Our technicians service a wide range of brands, including AquaPro, Autotrol, Clack, Cuno, Fleck, GE, Pelican, Pentair, Puronics, Rayne, 3M and Watts, with a full parts inventory.
Better drinking water starts with a free test
Tell us about your home and we'll test your water at no charge, then quote the right undersink RO system for you.
- 9 filtration stages, not 5, under your kitchen sink
- Cuts chlorine, chloramine, lead, arsenic and more
- Free on-site water test before you buy
Prefer to talk? Call (713) 664-4601