Replacement water supply lines for dishwashers can be purchased at The Home Depot, Lowe's and Repair Clinic, as of March 2015. All three vendors offer online and phone purchasing, while The Home Depot and Lowe's also stock the parts in-store.
The Home Depot sells water supply line parts that are braided stainless steel and PVC. Additionally, the company sells a variety of diameters from .375 inches to .55 inches.
Lowe's offers water supply lines manufactured by Eastman, BrassCraft and Watts. The company publishes user reviews and allows customers to refine their searches by price.
Repair Clinic offers a 365-day return policy on all parts. The company sells water supply lines for specific brands of dishwashers, including Frigidaire, General Electric and Electrolux.