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Williamson County, Texas

Licensed Septic Companies in Williamson County, TX

9 septic companies serve Williamson County, Texas, and 4 of them hold a Texas septic license or certification matched to the Texas Commission on Environmental Quality list (data as of October 2026).

Septic services in Williamson County

Guides: Septic tank pumping · Septic system installation · Septic inspection · Septic repair · Drain field repair · Aerobic septic systems · Installation cost · Pumping cost

9 septic companies in Williamson County

Georgetown 4

Florence 1

Hutto 1

  • Gwen Meighan

    Hutto, TX 78634

    • Licensed: Texas TCEQ Licensed On-Site Sewage Facility Installer · #OS0009458 (Texas Commission on Environmental Quality, verify)

    Per state license: Installation

    (512) 228-1994

Leander 1

Liberty Hill 1

  • Kevin J Moore, Rs

    Liberty Hill, TX 78642

    • Licensed: Texas TCEQ Licensed On-Site Sewage Facility Installer · #OS0011071 (Texas Commission on Environmental Quality, verify)
    • Licensed: Texas TCEQ Licensed On-Site Sewage Facility Installer · #OS0019037 (Texas Commission on Environmental Quality, verify)

    Per state license: Installation

    (512) 689-9293

Round Rock 1

  • Miller, Gretchen Rose

    Round Rock, TX 78681

    • Licensed: Texas TCEQ Licensed On-Site Sewage Facility Installer · #OS0037955 (Texas Commission on Environmental Quality, verify)

    Per state license: Installation

    (512) 300-0435

Septic licensing in Texas

TCEQ licenses the individuals who install, evaluate and maintain on-site sewage facilities (OSSF), including maintenance providers for aerobic systems. The Texas Commission on Environmental Quality (TCEQ) issues these credentials: OSSF installer (Basic and Advanced); Site evaluator; Designated representative; Maintenance provider and maintenance technician.

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

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

Septic companies in Williamson County: common questions

How many licensed septic companies are in Williamson County, TX?

9 septic companies serve Williamson County, Texas, and 4 of them hold a Texas septic license or certification matched to the Texas Commission on Environmental Quality 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 Texas?

TCEQ licenses the individuals who install, evaluate and maintain on-site sewage facilities (OSSF), including maintenance providers for aerobic systems. The licensing body is the Texas Commission on Environmental Quality (TCEQ).

Which companies pump septic tanks in Williamson County?

5 of the 9 listings in Williamson County offer septic tank pumping, either on their own website or under a state pumper license. Use the service filter above to show only those companies.

Which companies install septic systems in Williamson County?

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

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

Use the Texas Commission on Environmental Quality (TCEQ)'s lookup (https://www2.tceq.texas.gov/lic_dpa/index.cfm?fuseaction=licall.searchindiv) and search the contractor's name or license number. Our guide to checking a septic license walks through it.