Our experts are here for all of your plumbing needs as well give us a call today to find out more! Some states do not require plumbers to be licensed, but for the safety of your house, the people living under your roof and for your pocketbook, you'll want a licensed plumber to do the needed work. Is a plumber required to be insured and bonded? Best place to find information and services that your council provides... If your drain is partially clogged, there are a few different.