Civil engineering projects forming the first wave of Scottish Water's £500 million 'Improving Urban Waters' programme are now underway across Scotland. The initiative aims to improve water quality, reduce sewer-related debris, and minimise spills through targeted infrastructure investments.

The publicly owned utility has already fulfilled a commitment to install 1000 monitors on its sewer network, with data available via a near real-time online map. Now, the focus shifts to physical infrastructure upgrades, with over 70 improvement projects targeting priority storm overflows scheduled for delivery by December 2027. Further projects are currently in the design phase for delivery beyond this date.

Working in close collaboration with the Scottish Environment Protection Agency (SEPA), Scottish Water has identified key storm overflows requiring improvement or replacement for water quality or aesthetic reasons, primarily tackling sewer-related debris like wet wipes. The investment programme operates under the banner 'Draining the Rain, Enhancing the Environment'.

One of the initial civil engineering projects, the installation of a new screened storm overflow near Lord Ancrum Woods in Midlothian, has already been completed. Four similar projects are currently active in Stewarton, East Ayrshire, forming part of a wider £16.5 million investment by Scottish Water to alleviate flooding issues in the town.


Karen Dee, Scottish Water's General Manager for Waste Water Services Strategy, stated: "Scotland's water quality is at its highest level for over 15 years with 87% of waterbodies rated as 'good' or 'excellent' condition. We know our sewer network will continue to come under increasing pressure from the combination of climate change, loss of green space and people flushing inappropriate items down the toilet. That is why we have targeted this extra investment specifically in locations where every pound that is spent will deliver real benefits to communities and the environment."

The utility emphasises that overflows are essential components designed to protect homes and businesses from flooding during heavy rainfall by diverting excess rainwater. When spills occur, the water is significantly diluted, with less than 1% originating from toilets.

Scottish Water highlights its strategic approach to monitoring overflows, focusing investment where it can best prevent flooding and pollution incidents, contrasting with the blanket 100% coverage model used elsewhere in the UK. The success of this approach, they state, is reflected in Scotland's overall water quality. Alongside the 1000 monitors already installed, a further 700 are targeted for installation this year (2025).

Karen Dee added: "We are committed to enhancing our precious natural environment and are investing more than ever before in our waste water network, through increased monitoring and targeted improvement projects. We have taken a strategic approach to investment, which has focused on where best to spend customers money in a way that will improve the water environment, rather than investing in monitoring everything."

Scottish Water continues to encourage the public to support its 'Nature Calls' campaign by only flushing pee, poo, and toilet paper.