Reverse osmosis installation in the Las Vegas Valley - under-sink RO with carbon pre-filtration, a dedicated faucet, a proper drain connection and ice maker lines.
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Reverse osmosis is a point-of-use treatment system that pushes water through a semi-permeable membrane to remove most dissolved solids. A typical under-sink unit pairs sediment and activated carbon pre-filters with the membrane, a storage tank and a carbon post-filter, feeding a dedicated faucet. The carbon stages take out the chlorine used to disinfect valley water, which improves taste and protects the membrane.
The Southern Nevada Water Authority reports valley water at about 280 parts per million, roughly 16 grains per gallon, which is very hard. Most of it comes from Lake Mead and is disinfected with chlorine as it leaves the treatment plants. Reverse osmosis removes most of the dissolved minerals at the kitchen tap, so drinking water, coffee and ice taste clean and kettles stop scaling. Ordinary activated carbon pre-filters handle the chlorine taste and protect the membrane.
A reliable RO system depends on the plumbing around it. We tap the cold supply with a proper valve, mount a dedicated faucet, and run the reject water to the drain through an air gap or approved drain saddle so drain water cannot siphon back. Older angle stops that have seized are replaced while we are under the sink. A dedicated line to a refrigerator or ice maker is easier to add during installation than later. Because RO treats only the drinking tap, scale elsewhere in the house is better handled by Water Softener Installation.
If PFAS is your concern, PFAS Screening first tells you what you are treating, and many RO units carry an NSF/ANSI 58 PFAS reduction claim. Active Plumbing is a fourth-generation family business serving the valley since 1991, licensed under #0047021 and insured. We set a filter change schedule at installation and follow up after the job. Call (702) 438-3357 to plan your RO installation.
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A reverse osmosis unit is only as good as its feed, drain and faucet connections. Active Plumbing is a licensed plumbing contractor, so the installation is done to the local plumbing code with a proper air gap or drain saddle, and any old valves under the sink are dealt with at the same time. We are a fourth-generation family business serving the Las Vegas Valley since 1991, licensed under #0047021, insured and rated 4.9 on Google across more than 880 reviews. You get a written price before work starts, warranties on parts and labor, and customer financing is available.
Reverse osmosis installation is performed by Active Plumbing under Nevada State Contractors Board license #0047021, verifiable at nvcontractorsboard.com. Connections and drain air gaps follow the Southern Nevada Amendments to the Uniform Plumbing Code as adopted for your address. Any permit requirement is confirmed with the building department for your address. Active Plumbing is insured.
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Mineral taste and cloudy ice from very hard valley water, scale in kettles, coffee makers and ice makers, existing RO units with membranes that failed early because filters were never changed, drain lines installed without a proper air gap or saddle, and seized angle stops under older sinks.
Call (702) 438-3357. We talk through the sink layout, faucet location, ice maker needs and whether a water test makes sense first.
The technician checks the under-sink space, drain and valves, then gives you a written price before work starts.
We fit the cold supply valve, mount the unit and tank, install the dedicated faucet and connect the drain through an air gap or approved saddle.
We flush the new filters and membrane, check for leaks, confirm flow and give you a filter and membrane change schedule.
Under-sink reverse osmosis installation typically runs $300 to $600 in the Las Vegas Valley, including parts and labor. That is a typical market range, not a quote. The final figure depends on the unit, the under-sink space and whether a valve or ice maker line is added. Active Plumbing gives you a written price before work starts, and a standard under-sink installation is usually completed in a single visit.
We install a supply valve on the cold line, mount the RO unit and storage tank where they can be serviced, and drill or use an existing hole for a dedicated faucet. The reject line connects to the sink drain through an air gap faucet or an approved drain saddle. Sediment and activated carbon pre-filters protect the membrane from particles and chlorine, and a carbon post-filter polishes the water. Optional lines run to refrigerators and ice makers. After start-up we flush the system, check every connection for leaks and confirm the faucet flow. We install reverse osmosis systems including Pentair.
Reverse osmosis installation is performed by Active Plumbing under Nevada State Contractors Board license #0047021, verifiable at nvcontractorsboard.com. Connections and drain air gaps follow the Southern Nevada Amendments to the Uniform Plumbing Code as adopted for your address. Any permit requirement is confirmed with the building department for your address. Active Plumbing is insured.
Call (702) 438-3357 to plan your RO installation. Let us know whether you want a refrigerator or ice maker line, whether there is a spare hole in the sink, and whether you already have a unit that needs replacing.
Start with the licence. Plumbing contractors in Nevada are licensed by the Nevada State Contractors Board, and anyone connecting to your supply and drain should give you a number you can check. Active Plumbing holds license #0047021, verifiable at nvcontractorsboard.com, where status and classification are public record. Ask whether the installer is insured, too.
Next, look at how they talk about the job. A trustworthy provider explains what reverse osmosis will and will not do. It removes most dissolved minerals at the drinking tap and its carbon stages handle chlorine taste, but it does not fix scale in the rest of the house. They should mention the drain air gap, the supply valve and the filter schedule, and give you a written price before work starts. Under-sink reverse osmosis typically runs $300 to $600 in the Las Vegas Valley, including parts and labor, as a typical range rather than a quote.
Finally, check track record. Active Plumbing is a fourth-generation family business serving the valley since 1991, rated 4.9 on Google across more than 880 reviews, and we follow up after the job. Call (702) 438-3357.
A DIY reverse osmosis kit comes with the membrane and filters, but the plumbing around it is what decides whether it works and stays dry. The weak points are the connections. A licensed plumber installs a proper valve on the cold supply instead of a self-piercing clamp, and replaces old angle stops that have seized while the sink is already open.
The drain connection matters most. RO sends reject water to the sink drain, and that line has to run through an air gap faucet or an approved drain saddle so drain water cannot siphon back toward the drinking water. Those connections follow the Southern Nevada Amendments to the Uniform Plumbing Code as adopted for your address. We also mount the unit and storage tank where filters can be changed, run a dedicated line to a refrigerator or ice maker if you want one, flush the system and check every fitting for leaks before leaving.
Active Plumbing does this work under Nevada State Contractors Board license #0047021 and is insured, and warranties cover parts and labor. You also get a filter change schedule for your unit, since skipped changes shorten membrane life. Call (702) 438-3357 to have it installed properly the first time.
Most Las Vegas homes that want RO water install it under the kitchen sink. The unit, storage tank and a dedicated faucet sit in the cabinet, with sediment and activated carbon pre-filters protecting the membrane and a carbon post-filter polishing the water. A line can also run to a refrigerator or ice maker. This is where RO earns its place in the valley, because the water is very hard - about 280 parts per million, roughly 16 grains per gallon - and RO takes most of those minerals out of drinking water, coffee and ice.
Whole-house reverse osmosis exists, but it rarely makes sense for a typical home. RO works slowly and sends some water to the drain, so treating every gallon for showers, laundry and irrigation adds equipment and waste without much benefit. For scale throughout the house, Water Softener Installation or Salt-Free Water Conditioning at the main is the better match, and Whole-House Water Filtration handles chlorine taste at every tap. Many homes pair one of those with under-sink RO for drinking water.
We help you choose based on what you actually want to change, and Water Quality Testing gives real numbers first if you want them. Call (702) 438-3357 for a written price before work starts.
Real reviews from customers we've served for Reverse Osmosis System Installation.
A cracked yard hydrant was wasting water at the dog run. Frost-free hydrant on a new lateral with a drain gravel pit. We were in Scotch Eighty, Las Vegas. The run is dry except when we choose to water.
Esme M.
Scotch Eighty, Las Vegas
Google review, August 2026
The upstairs shower went scalding when a toilet filled. A pressure-balance cartridge and new stops behind the trim. That call was from Westleigh. Kids can shower while someone flushes now.
Finn N.
Westleigh, Las Vegas
Google review, June 2026
The HOA fountain chlorinator back-fed into a drinking hose bib. A reduced-pressure backflow and a labeled dedicated fountain line. That call was from Summerlin West. Kids can drink from the bib again.
Tate G.
Summerlin West, Summerlin
Google review, May 2026
Under-sink reverse osmosis installation typically runs $300 to $600 in the Las Vegas Valley, including parts and labor. That is a typical range, not a quote. Active Plumbing gives you a written price before any work starts.
Requirements are set by the building department for your address - the City of Las Vegas, Henderson, North Las Vegas, Boulder City or Clark County for unincorporated areas. We confirm whether a permit applies before we start.
Active Plumbing holds Nevada State Contractors Board license #0047021, verifiable at nvcontractorsboard.com. We have served the Las Vegas Valley since 1991 and are rated 4.9 on Google across more than 880 reviews.
Mainly for taste and minerals. Valley water is about 280 parts per million, roughly 16 grains per gallon, and is disinfected with chlorine. RO removes most dissolved minerals and its carbon stages remove the chlorine taste, so drinking water and ice taste cleaner.
For drinking and cooking water, under-sink RO is usually the right choice. RO works slowly and sends some water to the drain, so treating every gallon in the house rarely makes sense. Whole-house scale is better handled by a softener or conditioner.
Pre-filters and post-filters are changed on a regular schedule and the membrane less often, depending on the unit and how much water you use. Skipped filter changes shorten membrane life. We give you the schedule for your unit at installation.
Many RO units are certified to NSF/ANSI 58 with a specific PFAS reduction claim. Check for that claim on the unit, and consider PFAS screening first so you know what you are treating.
Yes. It needs a dedicated line from the RO unit rather than a tee off the cold supply, and it is easier to run during the installation than to add later.
SERVICE AREAS
Active Plumbing provides reverse osmosis system installation throughout the Las Vegas Valley.
OUR SERVICE AREA
Proudly Serving All of Las Vegas Valley
Address:3580 Polaris Ave #17, Las Vegas, Nevada 89103Phone:(702) 438-3357Hours:Open 24/7Email:service@activeplumbinginc.comActive Plumbing is Las Vegas-based and open 24/7 for residential and commercial plumbing across Las Vegas Valley. We handle Emergency Plumbing, Drain & Sewer Services, Water Heater Services, Water Treatment, Gas Line Services, Pipe & Fixture Services and Sewage & Waste Services, with warranties on parts and labor.
Our licensed technicians serve Enterprise, Henderson, Las Vegas, North Las Vegas, Paradise, Spring Valley, Summerlin, Sunrise Manor, Whitney, Winchester, and the surrounding neighborhoods.
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3580 Polaris Ave #17, Las Vegas, Nevada 89103
Hours: Open 24/7
