Sometimes gravity makes life more difficult. Case in point, when wastewater must travel from a lower elevation to a higher one to get to a treatment plant, gravity presents a problem. One way to solve the problem is excessive excavation to dig deeper and deeper trenches to change elevation. Not only is the environment disrupted, digging deeper results in longer runs of pipe which translates into higher costs.
Lift stations, like the one pictured below, offer a cost-effective alternative. Lift stations pump wastewater form the lower elevation to the higher elevation to keep the flow moving.