Sima Drilling is an active family owned and operated Well Drilling, Well Pumps, Environmental and Connecticut Geothermal Company.  The company was started in the 50's by John and Lois Sima and is currently run by their 4 sons and 3 grandsons. You will find most of the work is done by a Sima family member.  Having worked on more than 20,000 wells and pumps we are able to handle your drilling and pump needs. Sima Drilling has actively been doing Geothermal wells in the Connecticut area since 1977.