The Septic GuideLicensed septic pros
List Your Business
Washington County, Tennessee

Licensed Septic Companies in Washington County, TN

20 septic companies serve Washington County, Tennessee, and 20 of them hold a Tennessee septic license or certification matched to the Tennessee Department of Environment and Conservation list (data as of October 2026).

20 septic companies in Washington County

Jonesborough 5

  • AK Rice

    113 Sherfey Rd, Jonesborough, TN 37659

    • Licensed: Tennessee TDEC Permitted Septic Installer (Type C) · #1080 (Tennessee Department of Environment and Conservation, verify)

    Per state license: Installation

    (423) 930-0559

  • Ed Gouge Construction

    597 A.J. Willis Road, Jonesborough, TN 37659

    • Licensed: Tennessee TDEC Permitted Septic Installer (Type C) · #11259 (Tennessee Department of Environment and Conservation, verify)

    Per state license: Installation

    (423) 753-3432

  • Heath Broyles

    288 Bowman Town Road, Jonesborough, TN 37659

    • Licensed: Tennessee TDEC Permitted Septic Installer (Type C) · #13163 (Tennessee Department of Environment and Conservation, verify)

    Per state license: Installation

    (423) 612-4532

  • Ramsey Construction

    4612 Cherokee Road, Jonesborough, TN 37659

    • Licensed: Tennessee TDEC Permitted Septic Installer (Type C) · #114 (Tennessee Department of Environment and Conservation, verify)

    Per state license: Installation

    (423) 753-7089

  • W.G. Cox Backhoe & Construction

    207 Buchanan Road, Jonesborough, TN 37659

    • Licensed: Tennessee TDEC Permitted Septic Installer (Type C) · #1636 (Tennessee Department of Environment and Conservation, verify)

    Per state license: Installation

    (423) 418-2536

Johnson City 4

  • David Salts Plumbing

    2203 McKinley Rd Ste #500, Johnson City, TN 37604

    • Licensed: Tennessee TDEC Permitted Septic Installer (Type C) · #13725 (Tennessee Department of Environment and Conservation, verify)

    Per state license: Installation

    (423) 557-5470

  • Hm Building And Renovations, LLC

    Po Box 3002, Johnson City, TN 37602

    • Licensed: Tennessee TDEC Permitted Septic Installer (Type C) · #13602 (Tennessee Department of Environment and Conservation, verify)

    Per state license: Installation

    (423) 426-0301

  • Hometown Plumbing Inc

    3300 Browns Mill Rd Suite 200, Johnson City, TN 37604

    • Licensed: Tennessee TDEC Permitted Septic Installer (Type C) · #14080 (Tennessee Department of Environment and Conservation, verify)

    Per state license: Installation

    (423) 930-8151

  • Mike Little Excavation

    77 Niles Ln, Johnson City, TN 37604

    • Licensed: Tennessee TDEC Permitted Septic Installer (Type C) · #1016 (Tennessee Department of Environment and Conservation, verify)

    Per state license: Installation

    (423) 747-1762

Elsewhere in Washington County 2

  • N V Barb and Son Excavating, LLC

    6182 Yukon Dr, TN

    • Licensed: Tennessee TDEC Permitted Septic Installer (Type C) · #12890 (Tennessee Department of Environment and Conservation, verify)

    Per state license: Installation

    (423) 340-1992

  • Stoots Backhoe

    109 Frank Lowe rd, TN

    • Licensed: Tennessee TDEC Permitted Septic Installer (Type C) · #783 (Tennessee Department of Environment and Conservation, verify)

    Per state license: Installation

    (423) 202-2168

Gray 2

  • Bradshaw Construction

    1259 Old Stage Road, Gray, TN 37615

    • Licensed: Tennessee TDEC Permitted Septic Installer (Type C) · #1601 (Tennessee Department of Environment and Conservation, verify)

    Per state license: Installation

    (423) 477-3498

  • Lakeview Plumbing

    138 Lin Snyder Road, Gray, TN 37615

    • Licensed: Tennessee TDEC Permitted Septic Installer (Type C) · #12632 (Tennessee Department of Environment and Conservation, verify)

    Per state license: Installation

    (423) 340-6052

Limestone 2

  • Barkley Lumber Company, Inc.

    501 Opie Arnold Road, Limestone, TN 37681

    • Licensed: Tennessee TDEC Permitted Septic Installer (Type C) · #1609 (Tennessee Department of Environment and Conservation, verify)

    Per state license: Installation

    (423) 257-6711

  • Dunn Excavating

    124 Collins Ln, Limestone, TN 37681

    • Licensed: Tennessee TDEC Permitted Septic Installer (Type C) · #10119 (Tennessee Department of Environment and Conservation, verify)

    Per state license: Installation

    (423) 482-3449

Fall Branch 1

  • OWNER OPERATOR (per TDEC Form entry)

    435 Painter Road, Fall Branch, TN 37656

    • Licensed: Tennessee TDEC Permitted Septic Installer (Type C) · #18203 (Tennessee Department of Environment and Conservation, verify)

    Per state license: Installation

    (276) 393-0759

Jonesoborough 1

  • S&W Construction and Excavation Services

    1240 Skyline Dr, Jonesoborough, TN 37659

    • Licensed: Tennessee TDEC Permitted Septic Installer (Type C) · #11932 (Tennessee Department of Environment and Conservation, verify)

    Per state license: Installation

    (423) 797-0846

Jonestown 1

  • Riggleman Construction

    437 Mayberry Road, Jonestown, TN 37659

    • Licensed: Tennessee TDEC Permitted Septic Installer (Type C) · #11974 (Tennessee Department of Environment and Conservation, verify)

    Per state license: Installation

    (423) 833-1336

Kingsport 1

  • Dba Mueller Master Builders

    171 Lancaster Road, Kingsport, TN 37663

    • Licensed: Tennessee TDEC Permitted Septic Installer (Type C) · #13281 (Tennessee Department of Environment and Conservation, verify)

    Per state license: Installation

    (423) 335-0108

Telford 1

  • Ar Construction

    639 Treadway Trail, Telford, TN 37690

    • Licensed: Tennessee TDEC Permitted Septic Installer (Type C) · #13763 (Tennessee Department of Environment and Conservation, verify)

    Per state license: Installation

    (828) 776-2490

Septic licensing in Tennessee

Tennessee permits septic installers yearly by system type; permits expire December 31. The Tennessee Department of Environment and Conservation, Division of Water Resources issues these credentials: Conventional installer permit; Alternative system permits (low-pressure pipe, mound, lagoon, aerobic); Pumper permit.

Permits for new systems, replacements and most repairs are issued locally. Ask the contractor which office handles Washington County and whether the permit fee is in their quote.

Tennessee septic licensing: agencies, license types and how to check a license →

Septic companies in Washington County: common questions

How many licensed septic companies are in Washington County, TN?

20 septic companies serve Washington County, Tennessee, and 20 of them hold a Tennessee septic license or certification matched to the Tennessee Department of Environment and Conservation list (data as of October 2026). Each license badge on this page names the agency and links to its lookup so you can confirm it.

Who licenses septic contractors in Tennessee?

Tennessee permits septic installers yearly by system type; permits expire December 31. The licensing body is the Tennessee Department of Environment and Conservation, Division of Water Resources.

Which companies install septic systems in Washington County?

20 listings in Washington County install septic systems. New systems and replacements need a permit, so ask each installer to handle the permit and to show their Tennessee license.

How do I check a septic contractor's license in Tennessee?

Use the Tennessee Department of Environment and Conservation, Division of Water Resources's lookup (https://www.tn.gov/environment/permits/water/septic-systems-permits.html) and search the contractor's name or license number. Our guide to checking a septic license walks through it.