Protected dug well.
https://www.emergency-wash.org/water/en/technologies/technology/protected-dug-well
👉🏼 PDF: https://app.box.com/s/uj32ubht6i89lsbh4j407h6oc1mvb9i3 ____ A Protected Dug Well is a large-diameter structure dug by hand that is lined and covered and allows for water abstraction using a pump. New wells are not normally considered in the acute response phase, but any existing wells can be rehabilitated quickly to provide water.