State laboratory

Tennessee Department of Health Knoxville Regional Laboratory

Knoxville, TN · Knox County

Homeowner samplesYou can collect and drop off your own sample
Mail-in kitsNot listed, call to confirm
Walk-in drop offNot listed, call to confirm

Certification and services

State certified
Certification number
TDH-KNOXVILLE
Certified by
Tennessee drinking water program
Certified for
Microbiology, Inorganics and trace metals
Lab type
State
Last verified
September 29, 2026

Listed on the official state certified laboratory list.

Tests this lab is certified for

Arsenic
Coliform Bacteria
Full Homeowner Panel
Hardness
Iron and Manganese
Lead
Nitrate / Nitrite

State public health laboratory. The Environmental Microbiology and Chemistry sections accept private well and spring samples for bacteria, nitrate and metals; sample bottles and forms come through the county health department or the laboratory (615-262-6337, TDOH-ENVLogin.Health@tn.gov). Screening covers bacteria, heavy metals, nitrate and other contaminants. The Knoxville regional laboratory serves East Tennessee.

How to submit a sample

  1. 1
    Call or check the website for the right bottles

    Bacteria samples need a sterile bottle from the lab. Chemistry samples usually take a clean container the lab supplies.

  2. 2
    Collect from a cold tap before treatment

    Skip softeners and filters. Remove the aerator, run the water 3 to 5 minutes, then fill without touching the inside of the cap.

  3. 3
    Keep it cold and deliver within 24 hours

    Bacteria samples are time-sensitive. Use a cooler with ice packs and hand it in or ship it the same day.

  4. 4
    Read the report against the standards

    Compare results with EPA drinking water limits. If anything is over, our problem pages explain what it means and how to treat it.

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