RT Olson Plumbing Services in Riverside, CA RT Olson Plumbing Company is a one stop shop for all of your Plumbing and Home Remodel Needs. Whether its plumbing, service and repair, bathroom, kitchen, or laundry room, remodeling, we do all from start to finish. We proudly serve Riverside, Corona and all surrounding areas. Our experienced professionals are equipped to handle any project. Because we are a family owned business with combined experience of over 50 years, we know how to do things right the first time. Please don't hesitate to call RT Olson Plumbing Company.