Tri-State Drilling is a municipal water well contractor and pump supplier that was founded in 1955 as Tri-State Drilling & Equipment. The company has a fleet of more than 15 drill rigs, trucks and cranes. It employs specialists in power transmission line and tower caisson construction. Tri-State Drilling has expertise in hard rock drilling for bridges and buildings. The company offers downhole hammers and cluster drill in various sizes up to 48 inch in diameter. It also provides drilling services at wet holes, unstable ground conditions, slurry drilling and swampland locations. Tri-State Drilling employs experts for drilling in flood plains, tidal flats and marshlands.