Ozwell E. Spencer (ãªãºã¦ã§ã«ã»Eã»ã¹ãã³ãµã¼, Ozuweru E SupensÄ) is one of Resident Evil's most important and mysterious characters. In the series, he is the owner and co-founder of the Umbrella Corporation, a pharmaceutical drug company that secretly manufactures bio-organic weapons.
These types of pumps give very reliable performance for a number of years. Unfortunately, life is hard for a motor stuck in the bottom of a well. The average lifespan of a pump is probably about 10-15 years. Some pumps will definitely go longer, while some stop working in less. One way or another, the pump will need to be replaced at some point. The pump to the left was in use for about 12 years.
Medium depth Well: for wells up to 200 ft deep, many pump choices are available. With modern casings and well caps, contamination is rarely a problem. Deep Well: for wells 200 ft to 450 ft, the pump choices go down, while the cost of the well and the pump system can exceed $10,000. Contamination is rarely a problem with the well itself. Very Deep Well: for wells over 450 ft, you have fewer choices still. Well drilling & pump costs combined can exceed $20,000.