Water resources

Water resources

October 2019 update

September was another wet month for the region, with 117 mm of rainfall. This is 172% of the monthly average and now means that overall, the rain received in the last six months (April to September) has been 109% of the long-term average, at 402 mm.

Surface reservoir storage continued to decrease at the beginning of September, however levels did increase at the end of the month in response to the rainfall. At the end of September, storage was 62% of total capacity (please see the table below for our latest resource position). This compares to 41% at the same time last year.

River flows are monitored on a daily basis to ensure stream supports are switched on as the appropriate flow triggers are reached. Most river flows continued to recede at the beginning of September, however rivers responded well to the rainfall later in the month.

Stream supports, which help improve river flows, are in operation in the following locations (as at 18/10/19):

  • Chitterne (2.6 Ml/d into Chitterne Brook, nr Warminster)
  • Kingston Deverill (6 Ml/d into River Wylye, nr Warminster)
  • Watergates (6.5 Ml/d into Tadnoll Brook, Dorset)

Most groundwater levels in September were just below average for the time of year, however there was some recharge in the South towards the end of the month.

We are committed to helping customers to reduce their water use. We offer free water efficiency devices to our customers and also provide useful tips on how to reduce water use both in in the home and garden. Using water wisely can reduce customers' utility bills and help their local environment.

Weekly update - 18/10/2019




Supporting river flows 

Water saving initiatives 

94% of average – for the last 12 months
172% of average – for last month 

73% full

Broadly average 

15.1 million litres per day

3.4 million litres since 2015

Related download

Water saving in the garden - make every drop matter