Configurations of inlets, catch basins, manholes, pipes, drains, mains, holding basins, pump stations, outfalls, controls, and special devices to move wastewaters from points of collection to discharge. Sewage collection systems must be designed and constructed to function without nuisance to the public, with a minimum of maintenance, with maximum safety for workers, without damage due to corrosion or erosion, with all components sized large enough to be capable of adequately serving the community through a justifiable design period with assured durability, and with an economically acceptable cost. The system of pipes and appurtenances is also known as the sewerage system. Wastewaters may be sanitary sewage, industrial wastes, storm runoff, or combined flows.