Advanced Drainage Systems is the world's largest producer of corrugated HDPE pipe and related drainage products. ADS serves the storm and waste water industry through a global network of 56 domestic and international manufacturing plants and 27 distribution centers. In addition to its flagship N-12 pipe, the company offers a complete line of fittings and other accessories including, Nyloplast drainage structures, and various geotextiles ADS Potable Grade Pressure Pipe is a leader in today's water service and landscape irrigation markets. Its flexibility and durability distinguish it from the competition and make it ideal for a variety of applications. Material: Polyethylene.