About us

The area in which we supply water and treat wastewater covers a total of some 10,530km² and extends from East Kent in the east, through parts of Sussex, to Hampshire and the Isle of Wight in the west. 

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In your area
Find out if you're a Southern Water customer, check your water quality or explore what's happening in your area.

Our area of operation

The area in which we supply water and treat wastewater covers a total of some 10,530km² and extends from East Kent in the east, through parts of Sussex, to Hampshire and the Isle of Wight in the west. 

The map below shows our area of operation for water supply and wastewater treatment, as well as the areas other water companies serve.

You can check if you're in our water supply area by entering your postcode in the 'In your area' feature.

A map of our area of operation

Click on the map to enlarge

Other water supply companies in our region:

 
 
 
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