Reverse Osmosis System
Under-sink 4- and 5-stage RO for pure drinking and cooking water at the kitchen tap.

Materials
What we install vs. what corner-cutters use.
System
4- or 5-stage with quality membrane (Filmtec/Dow).
low-grade all-in-one with generic membrane.
Why it matters: Quality membranes last 3–5 years vs 1–2 for low-grade.
Faucet
Solid brass with quality ceramic disc.
Plastic faucet.
Why it matters: Plastic faucets drip and crack in 1–2 years.
Safety
Auto-shutoff leak detector, air-gap drain.
No leak detection.
Why it matters: Leak detection has saved dozens of our customers from flooded kitchens.
Process
A predictable path — with real durations.
Site check
30 minConfirm cold water supply, drain, faucet location, fridge line if desired.
Install
2–3 hoursMount system, connect supply/drain/faucet, tie fridge line.
Startup & test
1 hourFlush membrane, TDS test, leak check.
Customer projects across Houston
Drag to reveal the reverse osmosis system transformation.
Recent reverse osmosis system projects from neighborhoods across the Houston area. Drag the slider on each image to see the before and after.


Why us
Why homeowners pick Modern Builders for reverse osmosis system.
We install with a leak-detection auto-shutoff valve. If the system ever leaks, it shuts off water automatically — you don't come home to a flooded kitchen. Every install includes a proper drain saddle with air gap (code requirement) so contaminated wastewater can never siphon back into clean. We tie in your refrigerator ice-maker line at install so your ice and drinking water are both RO-pure.
FAQs
Answers before you ask.
How much water does RO waste?+
Modern RO wastes 1–3 gallons for every gallon produced. Older systems wasted 4–5. We install high-efficiency membranes standard.
Filter changes?+
Sediment and carbon: every 6–12 months. RO membrane: every 3–5 years.
Does RO remove healthy minerals?+
Yes — that's why 5-stage systems add a remineralization cartridge to restore calcium and magnesium.
Can I connect it to my fridge?+
Yes — included in every install if you want it.
Related reading
Go deeper before you decide.
Get a quote — we do it right.
Fixed-price proposals, real timelines, no corners cut. Tell us about your reverse osmosis system project.
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