The reputation of St Ann's Well water was promoted by Dr John Wall, a Worcestershire physician, who analysed the water in 1745 and found that "the efficacy of this water seems chiefly to arise from its great purity". Wall published the results along with accounts of miracle cures in "Experiments and Observations on the Malvern Waters" (1757). The chief aim of the publication was to raise money to make improvements to the primitive building at St Ann's Well. It is telling that his research demonstrated that it was necessary for the waters to be drunk on the spot and taken regularly to be successful.