Knoxville
TN

Is Knoxville, TN Tap Water Safe to Drink?

Knoxville tap water meets federal Safe Drinking Water Act standards but 1 of 14 ZIP codes show detections above EPA health guidelines, primarily for PFBS. A certified filter is recommended for households that want an additional layer of protection.

8Water systems
14ZIP codes
7.1%ZIPs above EPA guideline
Metro areaKnoxville, TN
Latest data2025-10-06

Where Does Knoxville Get Its Water?

Water in Knoxville, TN is provided by 8 public water systems: KNOXVILLE UTILITIES BOARD-KUB, HALLSDALE-POWELL UTILITY DISTRICT, KNOX-CHAPMAN UTILITY DISTRICT, WEST KNOX UTILITY DISTRICT, CORINTH PWD, FIRST UTIL DIST OF KNOX COUNTY, LUTTRELL-BLAINE-CORRYTON U.D. and NORTHEAST KNOX U D.

How Is Knoxville Tap Water Treated?

Treated water is disinfected using free chlorine and on-site generated disinfectant. Treatment includes conventional treatment (coagulation, flocculation, and filtration), groundwater disinfection, in-line filtration, membrane filtration and post-ozone biofiltration.

What's in Knoxville Tap Water?

The following contaminants were detected most frequently in Knoxville public water systems. 1 of 14 ZIP codes showed detections above EPA health guidelines.

ContaminantPeak detectedEPA guidelineZIPs detectedStatus
PFBS 0.0064 µg/L 0.003 µg/L 1 ZIP Above guideline
lithium 9 µg/L — 0 ZIPs Within guideline
PFTrDA 0.007 µg/L 0.007 µg/L 3 ZIPs Within guideline
PFBA 0.005 µg/L — 0 ZIPs Within guideline
HFPO-DA 0.005 µg/L — 0 ZIPs Within guideline

Health Risk Profile for Knoxville

Based on EPA monitoring data, 1 of 14 ZIP codes in Knoxville have recorded detections above EPA health guidelines. Sensitive populations such as infants, pregnant individuals, and those with weakened immune systems may benefit from an additional layer of protection such as a certified point-of-use filter.

Best Broad-Spectrum Filters for This Water Profile

This city profile includes PFAS detections, chlorine disinfection, and other dissolved contaminants. Reverse osmosis (RO) systems certified under NSF/ANSI 58 provide broad reduction coverage; for PFAS specifically, confirm NSF/ANSI P473 or equivalent PFAS reduction certification.

Waterdrop G3P600 Reverse Osmosis System
Under-sink RO system

8-stage tankless RO system certified to NSF/ANSI 58, reduces 1,000+ contaminants including PFAS, lead, arsenic, fluoride, and nitrates.

See recommendations matched to your exact address: choose your ZIP code below.

Frequently Asked Questions about Knoxville Tap Water

Is Knoxville tap water safe to drink?

Knoxville tap water meets Safe Drinking Water Act requirements but 1 of 14 ZIP codes show contaminant levels above EPA health-based guidelines. A certified point-of-use filter adds an extra layer of protection.

What contaminants are in Knoxville tap water?

The most commonly detected contaminants in Knoxville water systems include: PFBS, lithium, PFTrDA. See the ZIP-level reports for exact measurements and EPA guideline comparisons.

Where does Knoxville get its drinking water?

Knoxville receives water from 8 public water systems, including KNOXVILLE UTILITIES BOARD-KUB.

Do I need a water filter in Knoxville?

If your ZIP code is among those with detections above EPA health guidelines, choose a filter certified for the specific contaminants shown in your ZIP report. Reverse osmosis is generally the broadest option for PFAS, lithium, and many other dissolved contaminants.

How often is Knoxville tap water tested?

Public water systems in Knoxville are required by the EPA to test for regulated contaminants on schedules ranging from daily (for microbials and disinfectants) to annual or triennial (for many chemical contaminants). Results are published in annual Consumer Confidence Reports (CCRs). The data on this page reflects the most recent available EPA monitoring results, with the latest sample date of 2025-10-06.

Tap water reports by ZIP in Knoxville

Water utilities serving Knoxville, TN

Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.

Modeled boundaries are shown with a dashed outline.

Also covers / overlaps with