Typically, a basic 60 metre borehole including the installation of a borehole pump, control system and the connection of pipe work costs between £8,000- £10,000 with an annual running cost of £50-£600 dependent on water usage. If the water is feeding a house or if the water will be used for drinking then you can expect to pay an additional £1,500 to £3,000 for water treatment. A typical water filtration system in a gritstone area will include a UV, pre-filter and iron reduction filter.