Wells have been used to obtain water since ancient times. Some wells have been in continuous use for hundreds of years. Others are fairly new, but have been built by traditional methods. Good water quality can usually be obtained from a well that is properly constructed, maintained, and used. Some traditional wells are excellent. Others are not and need upgrading.
PICKFORD, J. (1990): Upgrading Traditional Wells. Leicestershire: WEDC, Loughborough University URL [Accessed: 08.03.2019] PDF