Water Filtration and Reverse Osmosis in St. George, UT
If you are looking at water filtration in St. George because you read about arsenic in the tap water, start with what the city actually reports: arsenic is present in some source water, and the city stays under the federal limit by blending and treatment. If you want an extra step at your own faucet, an under-sink reverse osmosis system is the option the city's own report points to. We install RO systems and whole-house filters with standard cartridges, give you a price before any work starts, and do not try to sell you more system than your house needs.
- Under-sink RO, including fridge and ice maker lines
- Whole-house carbon or sediment filters where they help
- Honest arsenic answer from the city's own report
- Standard filter sizes, no proprietary cartridge lock-in
Under-Sink RO, Whole-House Filter or Softener: Which Does What
These three get sold together a lot, and they solve different problems. Knowing which one handles your actual complaint keeps you from paying for equipment you do not need. Here is the short version we give homeowners when they ask what to buy first.
- Under-sink reverse osmosis: drinking and cooking water at one faucet, plus the fridge if you want
- Whole-house carbon filter: chlorine taste and smell at every tap
- Whole-house sediment filter: sand and grit, mostly on private or well systems
- Water softener: hardness and scale on fixtures, glass and water heaters
- None of the filters remove hardness, and a softener does not make water taste better

Under-Sink Reverse Osmosis for Drinking Water
An RO system pushes water through a fine membrane and several filter stages, then stores it in a small tank under the sink with its own faucet. It is the most practical way to get bottled-water quality at home without hauling jugs, and it takes care of the mineral taste a lot of people notice in Southern Utah water.
The St. George water quality report notes that point-of-use RO can remove arsenic, and that the system has to be maintained to keep working. We set it up so filter changes are simple and show you where everything is before we leave.
RO Water to Your Fridge and Ice Maker
If you want filtered water and ice from the fridge door, we run a line from the RO system to the refrigerator. Many owners bypass the fridge's built-in filter once RO water is feeding it, which keeps the flow up and saves buying fridge filters you no longer need.
We route the line so it is protected, check it for leaks at both ends, and confirm the ice maker fills properly before we call the job done. If your fridge sits far from the sink, we tell you how we plan to get there before we start.

Filter Changes and Staying Off Proprietary Cartridges
The price of the system is only part of the cost. Every RO and whole-house filter needs new cartridges on a schedule, and some systems only accept their own brand, sold by one dealer. Before you buy any filtration system, ask what the replacement filters cost and whether they are standard sizes.
We install systems that take generic, widely available cartridges. You can change them yourself, buy them wherever you like, or have us do it. Either way, you are not tied to one company or one price list for the life of the system.
A Clean Under-Sink Install That Leaves Your Dishwasher Alone
Most RO problems we fix come from rushed installs: a drain connection that leaks, a dishwasher drain line that got kinked, or a faucet hole drilled in the wrong spot on a quartz or granite counter. We keep the dishwasher hookup and drain loop intact, connect the RO drain properly, and leak check everything.
Already bought an RO system online? Send us the make and model, and we will tell you before booking whether we can install it. We install them in kitchens across Ivins, Santa Clara and Washington, and we test the system before we leave.
- Reverse osmosis systems
- Whole-house water filtration
What People Ask Before Buying a Water Filter
Real questions from homeowners around St. George, answered without the scare tactics.
Is the arsenic in St. George water safe to drink?
Arsenic is present in some of the source water. The city stays under the federal limit by blending sources and running treatment, and it publishes the numbers every year in its water quality report. That same report says point-of-use RO can remove arsenic if you want an extra step at your tap. We would rather you read the report than be scared into a purchase.
Will my pitcher or fridge filter take out arsenic?
Most basic carbon pitchers and fridge filters are not designed to remove arsenic. They improve taste and chlorine. The city's report names reverse osmosis or distillation as effective options at the tap. If arsenic is the reason you are filtering, check the filter's certification for arsenic before you rely on it.
Why does our tap water taste bad?
Mostly dissolved minerals and chlorine. Southern Utah water carries a lot of minerals, and the city adds chlorine to keep it safe. An under-sink RO fixes the taste for drinking and cooking. A whole-house carbon filter helps the chlorine taste and smell at every tap.
Doesn't RO waste a lot of water in the desert?
An under-sink RO does send some water to the drain for every gallon it makes, and efficiency varies by model. For a family drinking and cooking with a few gallons a day, the volume is small compared to everyday household use. We can point you to models with better waste ratios if that matters to you.
Someone quoted me whole-house RO. Is that overkill?
For most homes, yes. Whole-house RO creates a large stream of reject water and often needs extra pumps and storage. Most houses here are better served by a softener for the whole house plus an RO at the kitchen sink. If you get a whole-house RO quote, ask the seller where the reject water goes.
Is RO water unhealthy because it removes minerals?
People disagree on this one, and we are plumbers, not doctors. Many people get most of their minerals from food. Others prefer the taste of RO water with minerals added back. We can install an RO with a remineralizing stage if you want one, and skip it if you do not.
Water Filtration & RO: common questions
Do I still need a softener if I get an RO system?
RO only treats the faucet it is connected to. It does not protect your water heater, fixtures or shower glass from hard water. That is the softener's job, so most homes here end up with both.
Does a whole-house filter remove hardness?
No. Carbon and sediment filters handle chlorine, taste, odor and particles. Hardness needs a water softener.
A website says my zip code has dozens of contaminants. Is that real?
Some online lists compare your water to goals that are stricter than the legal limits, which can make normal water look alarming. The official source is your city's annual water quality report. We are happy to walk through it with you.
I live in Kayenta. Is my water the same as Ivins?
No. Kayenta is served by its own private water system (KWU), separate from Ivins city water, with its own report. If you are on a private or HOA system and see sand or something unusual, a sediment filter may help, and a lab test is smart before buying anything else.
How often do RO filters need changing?
It depends on the system and how much water you use, so follow the manufacturer's schedule. We show you how to change the cartridges yourself and use standard sizes so they are easy to buy.
Can you install an RO system I bought online?
Send us the make and model first, and we will tell you before booking whether we can install it. We will also tell you the price before any work starts.
Related services
Water Softeners Softener repair, service and replacement from a plumber, not a sales rep. Itemized price before work.
Water Testing In-home hardness, TDS and chlorine testing before we recommend anything. No sales presentation.
Water Softener Installation New and replacement softeners sized for your water, with a proper drain, bypass and leak check.
Faucet Repair Dripping, stiff or low-flow faucets fixed, new faucets installed, stuck shutoff valves replaced.


