Roy Groome plumbing & drainage were on the job 4 times and made 6 mistakes large and small until I let them go . A very arrogant person and refused to listen to my concerns and or my instructions. Have just discovered they have charged aprox double for my sewage treatment system (as per info supplied ) Apprentices and their work was not checked. Finally had my sprinkler heads for the sewage system delivered (thrown from a moving vehicle on to the curb only after I threatened police intervention. Use this plumber at your peril ...