The city of San Dimas CA is located in the San Gabriel Valley. It is named after the San Dismas Canyon pass located in the San Gabriel Mountains above the northern part of the city. This pass was very important in the early days of California settlement. Settlers planted wheat as well as orange and lemon trees. Citrus was hugely successful and at one point San Dimas CA was home to four citrus packing plants and a marmalade factory. When you have a plumbing problem at your home or business in San Dimas CA, you deserve the best plumbing contractor in the business. At Preferred Plumbing and Rooter Service, we take pride in offering fast, affordable, reliable plumbing services along with courteous customer service. Our plumbers are exceptionally knowledgeable and experienced. We are happy to provide honest information about your plumbing needs and repair options, as well as transparent pricing. Call us any time 24/7 for service.