 This was sufficient for a while but by the end of 19th century an additional source was required.A spring was discovered at Bowlish which proved able to provide seemingly unlimited supplies of very pure water.Disposal of the effluents produced by the brewery were also a major problem and pollution of the River Sheppey was a source of much discontent amongst land owners further down the valley from 1877 until the closure of the brewery in 1921.