Ofwat, the economic regulator for the water sector in England and Wales, is calling on water companies with bold and innovative projects to solve some of the water sector’s biggest challenges to apply to win the fourth Water Breakthrough Challenge.

Ofwat’s latest innovation competition will award up to £40 million - the Water Breakthrough Challenge 4 will open today at 12.00pm BST.

This round of the competition will favour highly collaborative innovations focusing on generating and sharing knowledge and rolling out successful innovations . As in previous rounds, entries must be led by a water company in England or Wales.

The regulator is seeking even more ambitious solutions that tackle climate change, pollution, and leakage, as well as those that enhance the natural environment, improve services for consumers and increase the resilience of infrastructure.

To date, Ofwat’s £200 million Innovation Fund has awarded more than £105 million to projects across England and Wales that are pioneering solutions to improve the water sector’s environmental impact – from the transition to net zero to tackling leaks and spills – and to transform services for consumers.

Since 2020, the Water Breakthrough Challenges have seen water companies form new cross-sector collaborations with gas and electric utility providers, universities, charities, SMEs, tech giants, local governments and community organisations.

Previous winners have included robots that patrol water and wastewater pipes to pinpoint cracks, carbon capture technology to convert CO2 into household products, seagrass meadow restoration off the Welsh coast, and projects to power city buses with gas extracted from sewage.

Marc Hannis, Innovation Fund Manager, Ofwat said:

“There are many challenges that the water sector needs to overcome in the next decade. They include the widely reported issues like leakage rates and sewage discharge into rivers. They also include less well-known challenges, like transitioning an industry that uses 3% of the country’s electricity to net zero while contending with the impacts of climate change and ensuring better quality services for customers.

“While it is our job as a regulator to hold water companies to account when they do not meet their obligations, we also want to incentivise water companies to accelerate innovative ideas that drive positive changes for the environment and consumers. Water Breakthrough Challenge 4 is calling for even bolder initiatives and will reward collaborations that generate and share knowledge, and roll out successful innovations.”

Water Breakthrough Challenge 4 has two entry streams:

• Approximately £10 million is available through the Catalyst Stream for individual entries bidding for between £150,000 and £2 million. The closing date for Catalyst Stream entries is 3 January 2024.
• Approximately £30 million is available through the two-stage Transform Stream for individual entries bidding for between £2 million and £10 million – although Ofwat is open to accepting entries bidding for more than £10 million, subject to certain conditions. The closing date for stage one is 19 October 2023, with stage two closing on 10 January 2024.

Partnerships must be led by water companies in England or Wales, including NAVs. Applicants must commit to contributing an additional 10% of the project value submitted in their bid.

Entries should respond to one of more of the fund’s innovation themes:

• Responding and adapting to climate change including achieving the sector ambitions of net zero carbon, zero waste and zero leakage.
• Protecting and enhancing the environment and natural systems, to protect current and future customers from the impacts of extreme weather and pollution.
• Delivering long-term operational resilience and understanding infrastructure risks to customers and the environment, finding solutions to mitigate these in sustainable and efficient ways.
• Testing new ways of conducting core activities to deliver the services customers and society need, expect and value both now and in the future.

Anyone interested in participating should register for the webinar at 11.00am BST on Wednesday, 6 September 2023. Click here to register.  Innovation UK in conjunction with Ofwat is also holding a separate webinar at 12.00pm on 19 September 2023 to hear the latest thinking from government futures teams and what this means for the water sector and the future of the Innovation Fund. Click here to register 

Water companies who would like the fund’s delivery team to help brief their staff or supply chain about the opportunities presented by Water Breakthrough Challenge 4 can email This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

For more information about the Water Breakthrough Challenge, including details of previous winners and how to enter, visit waterinnovation.challenges.org