Knoxville Water Quality Lookup
See what's in your water before you spend a dollar on treatment.
Instant water profile
Check your local water before choosing a system
Enter your ZIP to see likely hardness, disinfectant, and drinking-water indicators for the utility serving your home — with the Honey Bear setup that fits.
Serving Knox, Blount, Anderson, and Loudon counties. Try 37918 · 37934 · 37801 · 37830 · 37777
Uses each utility's published EPA/TDEC Consumer Confidence Report. This is a system-level estimate, not a sample of the water at your tap. Well water and point-of-entry conditions vary. Honey Bear confirms with a free on-site water test.
How this works
Every Greater Knoxville home is served by a public water system that files an annual EPA/TDEC Consumer Confidence Report. We've matched each ZIP in our service area to its utility and pulled the numbers that actually affect your home: hardness (scale), chlorine and disinfection byproducts, and drinking-water indicators like lead. Where a ZIP is served by more than one utility, we show both.
The profile is a system-level estimate, not a sample of the water at your tap — and it's the right starting point for choosing between a softener, whole-home carbon filtration, or an under-sink reverse osmosis system. Honey Bear confirms the details with a free on-site water test before recommending anything.
Frequently asked questions about Knoxville water
Does Knoxville have hard water?
Yes. Knoxville Utilities Board (KUB) water is moderately hard — about 91 mg/L, or 5.3 grains per gallon, in KUB's 2024 water quality report. That's hard enough to leave scale in your water heater, pipes, and fixtures over time. Nearby utilities range from soft to moderately hard, so your exact hardness depends on which system serves your address.
Is Knoxville water hard or soft?
Most of Knox County is moderately hard — KUB, West Knox Utility District, First Utility District, and Hallsdale-Powell all fall around 85–95 mg/L (5 to 5.6 grains per gallon). Some neighboring systems are soft, including Alcoa (about 50 mg/L), Maryville (about 56 mg/L), and South Blount County (about 31 mg/L). Enter your ZIP above to see your provider’s exact numbers.
Is Knoxville tap water safe to drink?
Yes. Every public water system in our service area meets EPA and Tennessee (TDEC) safe-drinking-water standards. Home treatment — a softener, carbon filter, or reverse osmosis — is about reducing hard-water scale, chlorine taste, and disinfection byproducts further, or protecting your plumbing. It is a preference and maintenance choice, not a sign the water is unsafe.
How do I check my water quality in Knoxville?
Enter your ZIP code in the lookup tool above. It matches your address to your water utility and shows hardness, chlorine, disinfection byproducts (TTHM and HAA5), and lead pulled from the latest EPA/TDEC Consumer Confidence Report. For an exact reading at your own tap, Honey Bear Plumbing does a free on-site water test.
Do I need a water softener in Knoxville?
If you are on one of the area's moderately hard systems (most of Knox County), a water softener prevents scale buildup in your water heater and pipes, extends appliance life, and cuts the amount of soap and detergent you use. On the soft systems — Alcoa, Maryville, South Blount — a softener usually is not needed, and carbon filtration for taste or under-sink reverse osmosis for drinking water may be a better fit. A free water test confirms what your home actually needs.
What is reverse osmosis and do I need it?
Reverse osmosis (RO) is an under-sink drinking-water system that forces water through a fine membrane to remove dissolved contaminants like lead and disinfection byproducts. Honey Bear typically recommends RO for drinking water in older homes, or where your local report shows elevated lead or TTHM. It pairs well with a whole-home softener or carbon filter.