Water and wastewater services for Kent, Sussex, Hampshire and the Isle of Wight
About us
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About us

Each day we supply 532 million litres of drinking water from our 91 water treatment works along 13,870 kilometres of water mains to our customers’ taps.


We take nearly 70 per cent of the water from underground sources, called aquifers, 23 per cent from rivers and seven per cent from storage reservoirs.

Each day we also treat and recycle 717 million litres of wastewater at 365 treatment works after it is pumped through a network of 3,243 pumping stations and 39,594 kilometres of sewers.

We are owned by Greensands Investments Limited, a consortium made up of pension and infrastructure funds. 

Southern Water registered details:

Southern Water Services Ltd. Registered in England No. 2366670.
Registered Office: Southern House, Yeoman Road, Worthing, West Sussex, BN13 3NX.

If you would like to contact us about your bill, you can do so easily by using our online forms.

If you'd prefer to write to us by letter, please address your billing enquiry to:

Southern Water
PO Box 41
BN13 3NZ

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