Whole-house water filtration
A whole-house filter treats every tap in the house. Here's what it can and can't do with Washington County water.
A whole-house filter goes on the main line, usually ahead of the softener, so every faucet, shower and appliance gets filtered water. It doesn't soften water by itself. What it does depends on the media inside the tank or cartridge.
What do the common types do?
- Sediment filters catch sand, grit and scale flakes that can clog aerators and appliance valves.
- Carbon filters reduce chlorine taste and odor, and protect softener resin from chlorine, which can wear it out faster.
- Specialty media target specific problems a water test turns up. Match the media to the test, not the sales sheet.
Do I need one if I'm on city water?
City water in St. George is treated and tested to meet drinking water standards; the city's annual water quality report lists what's found and at what levels. A filter is about taste, odor and protecting equipment rather than making unsafe water safe. If you want to remove more dissolved solids for drinking water, an under-sink reverse osmosis system is usually the better tool.
What should I ask before buying?
- What exactly will this filter reduce, and is that certified to an NSF/ANSI standard?
- How often does the media or cartridge need replacing, and what does that involve?
- Will it lower my water pressure at full flow?
- Where will it go relative to the softener, and is there room in the garage?
Combining with a softener
A common setup in Washington County homes is sediment filter, then carbon, then softener, then an RO unit at the kitchen sink. That order lets each stage protect the next. A combined install often costs less in labor than adding pieces one at a time, so mention everything you're considering when you call.
What affects the price?
- The type and size of filter
- Whether it's added to an existing softener setup or installed together
- Space, plumbing changes and a bypass for the filter
The water treatment company prices the job after learning about your house, your water and, for installs and repairs, the spot where the equipment goes. We don't quote prices, and any number given over the phone is only a rough starting point until someone has seen the setup.
Where we connect you with help
Common questions
Will a whole-house filter remove hardness?
No. Filters don't remove calcium and magnesium the way a softener does. Many homes use both.
How often do filters need changing?
It depends on the filter type and water use. Ask the installer for the replacement schedule in writing.
Related services
- Water softener installation
- Water softener repair
- Water softener replacement
- Reverse osmosis drinking water
More background: Washington County hard water guide.
Spots on the glasses, crust on the faucets, or a softener that quit?
Call now and a local water treatment company will help you sort it out.