Rock drilling tools in water well and geothermal drilling are used to penetrate deep into the earth to access groundwater or geothermal energy. Tools like DTH hammers and rotary drilling tools are employed to drill through various rock layers, creating wells that reach aquifers or geothermal reservoirs. These tools must handle a wide range of rock types and depths, ensuring the efficient and precise creation of wells that can supply water or harness geothermal heat for energy production.