Managing water resources
Where our water comes from
Take a look at the journey your water makes before it reaches you.
Groundwater is water held underground in the soil or in pores and crevices in the rock. Our drinking water is mostly abstracted from the chalk aquifer which lies to the south and east of Cambridge.
The chalk aquifer can hold large quantities of water in a network of fractures and cracks in the rock. Groundwater is a reliable supply of water, and is generally more resilient to drought than surface water due to the slow response of groundwater levels to changes in rainfall. The water levels recede in the summer and are replenished by rainfall during the winter months.