Certified septic pumping companies in Gonzales County, TX

✓ 9 companies based in Gonzales County, from the TCEQ OSSF (On-Site Sewage Facility) occupational licenses (retrieved 2026-07-23). Companies based in neighboring counties often serve here too — see the full Texas list.

Company	Location	Certifications	License #
Charles Curtis Pish	—	Installer (Class I)	OS0039473
Delma L Clayton	—	Installer (Class II)Inspector (Maintenance Provider)	OS0024916
James Jeffery Harless	—	Designer (Site Evaluator)	OS0026395
James R Carruthers	—	Installer (Class II)	OS0005418
Jay R Kolbe	—	Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider)	OS0034404
Marland F Mercer	—	Installer (Class II)Designer (Site Evaluator)	OS0003704
Marshall E Davis	—	Installer (Class II)Inspector (Maintenance Provider)	OS0027725
Neil Davis Harmon	—	Installer (Class I)	OS0035364
Walter Bill Walker	—	Installer (Class II)Designer (Site Evaluator)	OS0002182

FAQs

How many certified septic pumping companies are in Gonzales County?

9 companies in the TCEQ OSSF (On-Site Sewage Facility) occupational licenses are based in Gonzales County as of 2026-07-23. Companies based elsewhere in Texas also commonly serve the county.

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