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  • Water resources

    September 2018 update

    Rainfall across our region in August was approximately average for the time of year, with 65mm of rain (around 4% higher than the average). This follows lower than average levels of rainfall in the preceding 3 months; May saw 78% of average rainfall, June saw just 9% of the average and in July we received 65% of the rain we would normally expect for the month.

    However, over the last six months we have received average levels rainfall due to a wet March and April. We do not anticipate the need for customer restrictions, ie, hosepipe bans, this year. 
    Current total reservoir storage is slightly below average and at the start of September stands at 49% of total capacity. Pumped storage (where we pump water from rivers to top up storage in the surface reservoirs) is currently running from Bridgwater and Taunton canal to Durleigh reservoir where storage is currently 41% and from the River Yeo to Sutton Bingham where storage is currently 49%.

    River flows are monitored on a daily basis to ensure stream supports are switched on as the appropriate flow triggers are reached. Whilst river flows remained higher than average throughout spring, they declined at a higher rate than normal over the summer and are currently just below average.

    Stream supports which help improve river flows are in operation in the following locations:  

    • Briantspuddle (River Piddle, Dorset)
    • Brixton Deverill (River Wylye, nr Warminster)
    • Chitterne (Chitterne Brook, nr Warminster)
    • Dewlish (Devil’s Brook, Dorset)
    • Hullavington (Gauze Brook, nr Malmesbury)
    • Kingston Deverill (River Wylye, nr Warminster)
    • Little Chalfield (Chalfield Brook, nr Bradford on Avon)
    • Lower Stanton St Quinton (Rodbourne Stream, nr Chippenham)
    • Luckington (Sherston Avon, nr Malmesbury)
    • Porton (Salisbury Bourne)
    • South Wraxall (Chalfield Brook, nr Bradford on Avon)
    • Tetbury (Tetbury Avon, nr Malmesbury)
    • Watergates (Tadnoll Brook, Dorset)

    Groundwater levels decreased at a higher rate than normal over the summer, however they are about average for the time of year.

    Demand for water increased by 20% during the recent hot dry weather. Whilst the average daily demand in August decreased in response to the lower temperatures, it is still slightly higher than before the heatwave and is around 20 Ml/d greater than demand in August last year.


    leaks fixed on our network during 2017/18.

    We are committed to helping customers to reduce their water use and:

    • offer free water efficiency devices to our customers
    • 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.  


    93% of average - For the last 12 months

      104% of average - For last month


    44% Full


    Below average 

    Supporting river flows 

    53 million litres per day

    Leaks fixed this year


    Water saving initiatives 

    3.4 million litres since 2015 
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