N'ime ụzọ ndoro nke ụlọ ọrụ ndoro ochie na ụkpụrụ ndoro ụlọ ọrụ geotechnical, ịmalite mmiri n'okpuru ugwu bụ ndoro nke ọma maka ịkwalite ọrụ. Pumps wellpoint bụ ndoro ndoro nke sistemụ wellpoint dewatering, ndoro nwere ike ịmalite mmiri n'okpuru ugwu n'ime ụlọ ọrụ ndoro, na-enyere ọnwụ ndoro dị mma na ndoro. Pumps a na-eme ka vacuum nwere ike ịmalite mmiri n'ime ụlọ ọrụ ndoro, nke na-akpata na nke wellpoints, ndị ọnụ ahịa mmiri dị n'okpuru ugwu n'ime ụlọ ọrụ ndoro. Ọrụ a na-enyere ọnwụ ndoro dị mma na ịkwalite ụlọ ọrụ ndoro ochie, yana ịmalite mmiri ugwu na ịmalite mmiri ugwu.