25 licensed septic contractors based in Knox County. Every license number below is sourced from official Ohio records, with a link to verify it yourself.
Grouped by the county of the address on each business's state license record, which can be a mailing address; it doesn't tell you where the business works. Where the record doesn't name the county of the address, its ZIP code decides (a ZIP that crosses a county line goes to the county holding most of its homes), then its town.
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Based in Howard, OH · License #BND417111M
Based in Danville, OH · License #790109720
Based in Mt. Vernon, OH · License #Q968142140
Based in Fredericktown, OH · License #67806005
Based in Mt. Vernon, OH · License #999078681
Based in Danville, OH · License #67736097
Based in Mt Vernon, OH · License #95krx4689
Based in Fredericktown, OH · License #64807027, 67342517
Based in Mt Vernon, OH · License #62238854, 62238891, 62238901
Based in Danville, OH · License #67736113
Based in Howard, OH · License #95CDD7695, 95CDD8634
Based in Fredricktown, OH · License #108460620, 108460628
Based in Mt Vernon, OH · License #BND3411387, BND3411484
Based in Centerburg, OH · License #67915358
Based in Mt Vernon, OH · License #95CDF0298
Based in Danville, OH · License #Q968141192
Based in Danville, OH · License #7901314414
Based in Centerburg, OH · License #BND014601H, BND4292433
Based in Danville, OH · License #62237635
Based in Danville, OH · License #62243308
Based in Centerburg, OH · License #Q968147248
Based in Mt. Vernon, OH · License #62241179
Based in Fredericktown, OH · License #LSM0949794
Based in Mt. Vernon, OH · License #67839880
Based in Centerburg, OH · License #62287311
Septic (onsite wastewater) contractors handle everything from routine septic tank pumping and cleaning to repairs, inspections, and new system installation. States license each role separately (a pumper is not necessarily licensed to install, and vice versa), so match the license class to the job.
Before you sign anything: confirm the license number on this page is still active with Ohio, ask for proof of insurance, and get at least three written quotes; pricing on this work varies widely by site conditions.
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