Sump

Engine sump

A sump is a low space that collects often undesirable liquids such as water or chemicals. A sump can also be an infiltration basin used to manage surface runoff water and recharge underground aquifers.[1] Sump can also refer to an area in a cave where an underground flow of water exits the cave into the earth.

  1. ^ Fagin, Dan. "Ancient, Clean, Controversial". Newsday.