Pearson Drilling and Pump Service began in the small town of Granada, Colorado under the name of Hoffman Drilling in the early 1940's. Owner Earl Hoffman provided cable tool drilling services to the region of Southeast Colorado for over 30 years until Pinkney Pearson (Earl Hoffman's son-in-law) began drilling by method of mud rotary into the late 1960s.

For years, Earl and Pinkney (P.W) worked side-by-side drilling wells. The company became profitable, drilling about 15 wells a year at a rate of about $2.00 per foot. Hoffman Drilling became Pearson Drilling and Pump Supply when passed on to Mike Pearson, son of P.W. Pearson. At this time, the operations were moved to Lamar, Colorado and production more than doubled within just a few years. By the late 1980s, Pearson Drilling and Pump Supply made a big name for itself following the past two generations lead, providing high quality service at competitive prices.

In 2001 fourth generation, John Pearson decided to join his father Mike Pearson in opening an operation in Pueblo, Colorado. John Pearson now owns and runs Pearson Drilling and Pump Service, also known as Pearson Drilling & Pump Supply, from its Pueblo location. Today, Pearson Drilling and Pump Service is more successful than ever. Drilling over 100 wells per year, Pearson Drilling and Pump Service is the industry leader in providing turnkey water well systems. Pearson Drilling and Pump Service takes pride in the same quality of service as preceding generations had. Quality of service and products set Pearson Drilling and Pump Service apart from the rest.