Home › Williamson County

Septic inspectors, installers and maintenance providers in Williamson County, TX

Independent directory. Names, license types and numbers come from the TCEQ licensing database (current OSSF licenses, downloaded Oct 28, 2026). The county is the one on each license holder's TCEQ record, not necessarily where they work. Phone numbers and cities appear only when the license holder authorized TCEQ to release business contact information. Verify the license with TCEQ before hiring.

102 TCEQ OSSF license holders list Williamson County on their license record (50 Installer IIs, 29 Installer Is, 23 Maintenance Providers, 23 Site Evaluators, 18 Designated Representatives). 3 released a business phone number to TCEQ. This directory serves Williamson County; no listing here means a business has an office in the county.

Who inspects septic systems in Williamson County?

Septic permits and installation inspections in Williamson County are handled by the local authorized agent. TCEQ's 2024 authorized-agent report lists these agents reporting in Williamson County (some cover only a city or a lake area):

• Williamson County (TCEQ AR no. 620459)

Find which one covers your address, plus phone numbers, with the TCEQ local contact search.

License holders

Source: TCEQ Licensing & Registration database, group search for On-Site Sewage Facility licenses (current status), and the TCEQ License Holder Spreadsheet for released contact details. Last checked Oct 28, 2026. Apprentices and maintenance technicians are not listed because they work under a licensed installer or maintenance provider.

Texas septic inspection guide → · All counties