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Southern Water: Water and wastewater services for Kent, Sussex, Hampshire and the Isle of Wight
Toggle navigation
Toggle navigation
  • Developers & Builders
    • Water Services
    • SN45 New or Replacement Water Supply
    • S41 Water Main Requisition
    • S51 Self-Lay
    • S185 Southern Water Diversion
    • Waste Water Services
    • Pre-Planning Enquiry Waste Water
    • Pre-Design Assessment
    • S106 Connect to a Public Sewer
    • S98 Requisition of a Public Sewer
    • SN18 Build over Sewer
    • S185 Developer Diversion of Sewer
    • S185 Southern Water Diversion
    • S104 Adoption of New Sewer
    • S102 Adoption of Public Sewer
    • Declaration of Works - Build Over
  • My Application Status
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Each day we supply 524 million litres of drinking water along 13,753 kilometres of water mains and treat 718 million litres of wastewater through a sewer network of 39,600 kilometres. Learn More

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If you have a query or want some advice, we're here to help. It's always handy to have your account number ready and you'll be asked to confirm your personal details.

  • Developer services helpdesk
    0330 303 0119
  • Automated telephone service
    0330 303 1263
  • Billing and account enquiries
    0330 303 0277
  • Water and wastewater enquiries
    0330 303 0368

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