On Winston-Salem/Forsyth County Utilities water, which serves most of Lewisville, hardness averages 17.5 ppm, so a softener is seldom needed. The exceptions are homes in the town's rural-zoned areas that use private wells, where testing decides what's worth installing. Call the number on this page to be connected with a local plumber in Lewisville.
Two kinds of water in Lewisville
Lewisville gets public water and sewer through an agreement with the City-County Utilities Commission. That water starts in the Yadkin River and Salem Lake and is treated at three plants with 91 million gallons a day of combined capacity. The 2025 report gives a hardness range of 9 to 28 ppm. At that level soap lathers easily and scale builds slowly, so a softener has little to take out. Disinfection is chlorine, at a 2025 distribution average of 1.02 ppm, and the report doesn't mention chloramine.
The town also has a Rural Overlay, and extensions outside town limits are tied to voluntary annexation. Some rural-zoned property uses private wells, though no source says how many. Piedmont groundwater can be harder than treated river water or carry iron and manganese, so advice for a Lewisville well differs from advice for a home on a city-county meter.
Situation and the usual choice
| Your situation | Usual choice | Why |
|---|---|---|
| Public water, chlorine taste | Carbon filter | Chlorine, not chloramine, is used |
| Public water, spotty dishes | Rinse aid or dishwasher settings | Average hardness is only 17.5 ppm |
| Private well, crust or stains | Softener or iron filter after a lab test | Groundwater varies from well to well |
| Either source, drinking water only | Under-sink carbon or reverse osmosis | Treats just the tap you drink from |
Signs to watch for
- A bleach-like smell when you fill a glass
- Orange or black staining in a home with its own well
- Electric water heater elements that fail early on well water
- Low flow at faucets after a filter cartridge has been in too long
- A softener running on city-county water with nothing to soften
Timing notes
Much of Lewisville's housing dates from the 1970s through the 1990s, with a median build year of 1987. If you're replacing a water heater, that's a convenient moment to add a filter on the main line, since the plumber is already working near the shutoff. Well owners do best testing once when the house is bought and again whenever taste, color or odor changes. Plumbing permits in Lewisville go through the joint Winston-Salem/Forsyth County Inspections Division.
Water Softeners & Filtration questions in Lewisville
Is a softener worth it on public water here?
What should my private well be tested for before I pick equipment?
What will take the chlorine taste out of my tap water?
Does a salt-based softener put sodium in my drinking water?
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