Historical Development 
The introduction of submersible sewage pumps in the mid-20th century marked a significant advancement in this technology. These pumps, designed to operate while fully submerged in sewage, dramatically improved the efficiency and reliability of sewage pumping systems. By being placed directly within the sewage system, submersible pumps eliminated the need for complex piping and reduced the overall footprint of the installation. The development of sewage pumps began in the early 20th century, driven by the need for efficient wastewater management.