Water Supply News
Portsmouth Water has no large raw water storage reservoirs. It relies almost entirely upon groundwater reserves in the chalk aquifers of the South Downs and abstracts its raw water from wells, boreholes and springs. It has one river abstraction at Gaters Mill on the River Itchen, a chalk river with a groundwater baseflow.
Those reserves rise and fall with the seasons and so Portsmouth Water pays particular attention to the local hydrogeological data by monitoring rainfall at its Havant Offices, groundwater levels in the chalk at Idsworth on the Hampshire/Sussex border, as well as the total yield from the natural springs at Havant and Bedhampton.
The information gathered is reproduced here for information purposes; no guarantee is given as to its accuracy.