The E/One Sewer system is a pressure sewer system that is powered by E/One grinder pumps. A pressure sewer system consists of a network of pressure pipes and grinder pumps, which are often installed at each home. The grinder pumps collect all of the wastewater from the home and grind it into slurry. The wastewater is then pumped to a larger sewer main or directly to a wastewater treatment plant. E/One developed the concept of the household grinder pump starting in 1968. Today, celebrating four decades of leadership, the E/One Extreme series grinder pump is more reliable and rugged than ever before.