I'm starting to do irrigation installs this year, i hope. I will primarily beservicing NH and MA and was just checking to see if i need to hire a licensed plumber to tee into the main water line? One house I bid on has a well and there's already a 1" ball valve teed into to output of the pump just sitting there begging my to hook up to it. Actually, my last job i worked in a hardware/plumbing supply store and remember hearing that it was legal to do plumbing as long as there was no soldering or glueing of pvc? Also, what kind of insurance am i suppose to get to protect myself? maybe this is why I need to hire a rip off plumber?