Correct Equipment proudly sells, installs, and services E/One grinder pumps and sewer systems within Oregon and Washington. These modern systems are highly reliable central sewer systems that allow developers and prospective home builders to use virtually any plot of land, regardless of terrain or elevation changes. Sewer systems using E/one grinder pumps are much more affordable than conventional gravity sewers, which require major excavation, and much safer for communities than septic systems, which can eventually fail, polluting ground and recreational water and endangering public health.