About us

Each day we supply 541 million litres of drinking water from our 83 water treatment works along 13,905 kilometres of water mains to our customers’ taps.

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

Each day we also treat and recycle 743 million litres of wastewater at 365 treatment works after it is pumped through a network of 3,321 pumping stations and 39,729 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 564

Any legal correspondence and/or documentation should be sent to our registered office address.