About us. Mack Drilling Company, Inc. has been in business since 1988 in Salem, Oregon and provides a wide varity of services. A leader in the industry providing Water Well Drilling, Pumps, Tanks, Water Conditioning, Reserviors, Waterlines, Excavation, Flow & Water Testing and Service and Repair for our clients. This is a very rewarding profession, we work together as a team and are goal orientated. Mack Drillings employees take pride in providin...