Groundwater Sources NH is relatively water rich. Wells which take water from the unconsolidated sand and gravel deposits above the bedrock are only feasible where the soils are sufficiently porous to transmits water and where the water table is sufficient deep to resist drought. Well drillers and pump installers in New Hampshire are licensed by the Water Well Board. The rules of the Board are numbered We 600-900. There are no state requirements relative to water quality or quantity for private home wells.
Some towns do have local requirements for private water wells.
The occurrence of iron, manganese, taste and odor in is approximately the same as in all types of wells in New Hampshire. Most wells in New Hampshire are drilled into bedrock. The average bedrock well is 295 feet deep and has a yield of 6.5 gpm. The yield of bedrock wells can be improved by two processes. Before drilling, the placement of the well can be guided by the process called fracture trace analysis .