Homes inside Knightdale get soft Raleigh Water, 25.2 ppm hardness in the 2025 report, so a softener rarely helps there. The bigger questions belong to private-well homes nearby, since eastern Wake groundwater can carry naturally occurring uranium, radon and radium. Call the number on this page to be connected with a local plumber in Knightdale.
Two different water situations
Knightdale merged its water and sewer system with Raleigh, and Raleigh Water now owns and runs everything in town. That water, drawn from Falls Lake and Lake Benson, averaged 25.2 ppm hardness in 2025, which is soft. It carries chloramine most of the year (2.80 ppm average) and chlorine alone for about six weeks each spring. Sodium was 24.3 ppm and pH 8.40.
The housing is new, too. The median Knightdale home was built in 2008, and about 74% went up after 2000. In most of these houses, the plumbing behind a filter install is modern and easy to work with.
Outside the Raleigh Water lines, eastern Wake is a different story. WUNC reported in 2019 that about 15,000 eastern Wake homes believed to be on private wells sit in areas with naturally elevated uranium, radon and radium, and the county estimates about one in five sampled eastern Wake wells is affected. Those contaminants can't be seen or tasted, so testing is the only way to know.
Which equipment fits which home
| Situation | Likely need | Notes |
|---|---|---|
| Raleigh Water, taste complaint | Carbon filter rated for chloramine | Whole-house or under-sink |
| Raleigh Water, scale worries | Usually nothing | Water is soft; test before buying a softener |
| Private well, hard or stained water | Softener or iron filter | Sized from test results |
| Private well, radiological results | Treatment chosen from the lab report | Options can include ion exchange or reverse osmosis; radon in water may need aeration |
Signs to take seriously
- A well that has never had a full lab test
- Scale or orange stains on a well-served property
- A chemical taste at the tap in town
- Buying a home with a well near Knightdale
Timing and permits
If you're buying a house on a well, test before closing so treatment can be planned up front. In town, the spring chlorine period is a good time to judge whether taste really bothers you. Building and plumbing inspections in Knightdale are handled by Wake County Permits and Inspections rather than the town, and a plumber will know when an install needs one. For well owners, retest after any treatment goes in, because a system that isn't confirmed by a follow-up test is only a guess.
Water Softeners & Filtration questions in Knightdale
Should my well be checked for uranium, radium or radon?
Is a softener worth buying if I'm on town water?
What gets rid of the chlorine or chloramine taste?
What should a private well be tested for before I buy treatment?
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