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Travis Graham ContractingLicensed

Licensed septic contractor based in Cartwright, Bryan County, OK

License details

Company	Derril Prater
License number	614
License type	Certified Installer
License status	Active, DEQ certified installer
Based in	Cartwright, Bryan County, Oklahoma 74731
Work types on the roster	Subsurface, Aerobic Spray, Aerobic Drip

"Based in" is the city and county of the address on the business's license record.

What this license covers

Installation / repair: licensed to build and install septic tanks and drainfields, and to repair or replace failed ones.

How to verify this license

We publish the license details exactly as they appear in the public licensing records of the agency that issued the license; we do not vouch for the business itself. Before hiring, look up license #614 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.

Source: Oklahoma DEQ - Certified Installers, last checked 2026-08-19. Look it up at the issuing agency.

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See every listing based in Bryan County or in Cartwright.