Can a Sewage Treatment Plant Be Installed Underground? Many people wonder if a sewage treatment plant installed underground is possible or practical. With more focus being put on there not being enough space, preserving the environment, and conserving urban and residential areas, underground installation is gaining popularity and reality. Visit the link for more information: https://www.netsolwater.com/can-a-sewage-treatment-plant-be-installed-underground.php?blog=6963