704.788.9800
Mainline Supply Company. Knowledge. Responsiveness. Service.
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Defend Your H20!
Assisting communities in their quest to enhance drinking water security and marketing the Davidson ATV – the world’s first internal stealth device solely designed for the prevention of foreign substance injection into the drinking water system via the fire hydrant.
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Welcome to Mainline Supply Company.
We have always prided ourselves on delivering quality products, best value, and superior customer service. This philosophy has helped us grow into an industry leader, distributing a wide range of water, wastewater, gas, drainage, and safety products throughout the country. Though accurate, this statement barely scratches the surface of what we do. 

Our people sometimes wear caps imprinted with the words "diggin' deep." This simple statement sums up our philosophy. We dig deep into our customers' lives, solving their problems, anticipating their needs, answering the questions they don't think to ask. Our knowledge, responsiveness, flexibility and teamwork are our real "supplies." They're what our company is known for...and what we constantly strive to improve.

Mainline Supply Company
7025 Northwinds Dr NW
Concord, NC 28027