Standard water well drilling rigs provide the most suitable option. These rigs are designed for shallow formations including clay and sand, feature compact dimensions, allow flexible positioning, operate with low energy consumption, and require no complicated systems for removing drill cuttings. The water drilling rigs deliver efficient drilling for domestic shallow wells is ensured.

A reverse circulation drilling rig provides better stability in loose formations. Reverse air or water flow enables rapid cuttings discharge and maintains a stable negative pressure inside the borehole, reducing disturbance to sand or gravel strata. When combined with mud-based wall protection, collapse risks are significantly lowered, whereas standard water well rigs exhibit higher collapse probability in these conditions.

A reverse circulation drilling rig is the recommended choice. Efficient debris removal prevents cuttings buildup at deep borehole bottoms, and high-power drive systems accommodate large-diameter drilling tools. This configuration supports deep drilling more efficiently than standard water well rigs.

The water well drilling rigs, including portable and compact vehicle-mounted models, are easier to deploy. These rigs require less than 10 m² of space, do not rely on large auxiliary equipment, and can be repositioned efficiently within limited areas. Reverse circulation drilling rigs generally require more operating space due to larger machine size and associated cuttings-removal systems.

For shallow wells under 200 m, standard water well drilling rigs provide the more economical option due to lower equipment procurement or rental cost and reduced energy consumption. For deep wells over 200 m or projects involving complex formations, reverse circulation drilling rigs offer a lower long-term cost by reducing collapse risks and minimizing rework.