Charges announcementIMPORTANT NEWS  -

As of Friday 25 October 2019, we received the go-ahead from Ofwat to implement the sector’s new approach to sewer adoption. 

Please click her for more information on the Codes for Adoption.

Getting a water supply

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If you are building multiple household or non-household properties on a site that will have new road access, you will probably need a new water main.  This main, and the services to each property, can either be laid by accredited Self-Lay Providers or by ourselves.  

For a single new or existing property or where a small number of connections are required then you will probably need a new or replacement water connection(s) to an existing water main.

New or replacement water connections by South West Water

New or replacement water supplies for a single property, small number of properties or a non-domestic supply connecting to an existing water main.

Please follow this guide if you require new or replacement water connections to an existing public water main

New Water Mains/Services laid by an accredited Self Lay Provider

Employ your own Self Lay Provider to install new water mains to a site and/or connect services to each property.

Please follow this guide if you require a new water main to serve (minimum of 2 or more properties)

New Water Mains/Services laid by South West Water


South West Water can install new water mains to a site and/or connect new services to each property.

Please follow this guide if you require a new water main to serve (minimum of 2 or more properties)

Isles of Scilly

From 1 April 2020 South West Water became the appointed water and wastewater company for the Isles of Scilly. This means that South West Water took responsibility for existing water and wastewater infrastructure on the islands.

Investing in our region

We believe it is right to support the necessary improvements in water and wastewater services on the islands so that services are in line with standards on mainland UK by 2025 or 2030 in the case of Tresco. This includes the ability to provide new water and sewer connections to the network.

Our wastewater investment will be focused on achieving a reliable wastewater service including being able to cope with extreme conditions, protecting the environment and providing long term benefits to the community.

The balanced investment for each island for water asset improvements will focus on achieving a clean, safe and reliable supply of drinking water.

South West Water appreciate that the island economy is heavily dependent on tourism with over 90% of the islands' income coming from this source. Therefore, our proposed programme of investment will be designed to support and enhance the economy of the islands by improving services and the environment. Once finalised, we will actively communicate with local communities to ensure we work together to deliver improvements in the best way for the communities we serve. Once the asset improvements are delivered to your community we will happily help with applications for new or replacement supplies.

Should you wish to discuss your enquiry further please contact our Developer Services Help Desk on 0800 083 1821.

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