Terri Jakoubek knows the installation business she owns with husband Lloyd has an edge on competitors. That’s not just because they have the knowledge that goes with nine years of running a company. It’s also because they have something few other local installers can claim: a national credential.Jakoubeks, owners of Raymond Contracting in Raymond, Neb., are among nearly 300 professionals who as of May 1 held the Certified Installer of Onsite Wastewater Treat-ment Systems credential, offered by the National Environmental Health Association (NEHA). The credential is starting to take off as it gains exposure at onsite industry events and as
