Plumbing Specialists 3434 Niki Way Riverside, CA 92507 (951) 683-3240 Tonkin Plumbing, Inc. P.O. Box 2886 Riverside, CA 92516 (951) 784-7586 Big John's Plumbing 7510 Lakeside Dr. Riverside, CA 92509 (951) 934-3931