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Tankless Reverse Osmosis Drinking Water Systems
A softener handles hardness. It does not make drinking water. Reverse osmosis is what takes chlorine byproducts, lead, heavy metals and dissolved solids out of the water you actually drink and cook with.

$3,500 Installed
Published price. Not a promo, not only good today.
Installation Included
No separate install fee. No maintenance contract.
Lifetime Warranty
Tanks, valves, housings and major components.
TCEQ-Licensed
Installed by licensed hands, as Texas requires.
Specification
What is in it, and why.
- Tankless — no bulky bladder under the sink
- The AW800 AlkaPro produces on demand at 800 gallons per day, so you get your cabinet back and never taste stale tank water.
- Seven stages, ending in an alkaline polish
- 5 micron sediment pre-filter, two NSF carbon block stages for chloramine, THMs and TCE, a high-rejection thin film composite membrane, coconut shell GAC polish, an internal alkaline remineralizer, then a final GAC stage.
- Dedicated faucet, installed and sealed
- Finish matched to your kitchen, drilled and mounted properly — not clamped onto the sprayer hole.
- Filter change reminders
- The unit tracks throughput and tells you when a stage is due, typically every 6 to 12 months.
What changes at home
The difference you actually notice.
- No more bottled water deliveries or grocery-run cases
- Coffee and tea taste completely different — the first thing most people notice
- Ice comes out clear instead of cloudy
- Safe, filtered water for baby formula and cooking
typical hardness
Reported range 9–18 gpg · scale 0–20
- Coverage
- Greater Houston + 2 hrs
- Common source
- Gulf Coast Aquifer & treated surface water
- Common disinfectant
- Chloramine on converted supplies
- Typical range
- 9–18 gpg
- Classification
- Very hard
Nearly every city we serve tests in the hard or very hard band. Pick your city below for local detail, or book a free test at your tap.
Recent work
Installed across Greater Houston.



Where we install it
Reverse Osmosis across 24 service areas.
Same published price and the same specification in every one of them.
FAQs
Questions about reverse osmosis.
Does reverse osmosis remove chloramine?
Yes. The carbon prefilter stages handle chloramine, which most Greater Houston surface-water supplies use instead of free chlorine. Chloramine is more persistent than chlorine, which is exactly why an undersink pitcher filter struggles with it.
Is RO water bad for you because it strips minerals?
Straight RO water is very low in minerals, which is why our system finishes with an alkaline mineral stage. You get the contaminant removal without the flat taste or the mineral-stripping concern.
Can I add RO later if I only buy a softener now?
Yes. The RO unit installs independently and we can come back for it. Most people who add it later tell us they wish they had done both at once.
How much water does it waste?
The tankless design runs a far tighter recovery ratio than a traditional tank RO. For a typical family the added water use is comparable to running the dishwasher once more per week.
Get started
Ready for water you can actually trust?
Tell us a bit about your home and we will send a no-pressure quote — usually within one business day. Or book the free in-home test: about 20 minutes at your kitchen sink, written results either way.
- Call or text(435) 881-7380
- Emailhello@ascendwaterco.com
- Visit25220 Kingsland Blvd Suite 100, Katy, TX 77494
- HoursMonday–Saturday, 8:00 AM – 7:00 PM