I have been using Mark Johnson Plumbing Inc for several years. I actually watched Mark's boys grow up - that's how long I have been a returning customer. They stay pretty booked up and busy, but it's still fairly easy to get in touch with someone to schedule an appointment. They get out to the job pretty quickly, and they do good work. The office staff and technicians are all professional and friendly. I am satisfied with their customer service and with their work, and that's why I continue to use their service.