Stannington gas flood: One year on from when Yorkshire Water pipe knocked out power for 3,000 Sheffield homes

200,000 litres of water poured into the Stannington area's gas pipes.

It has been one year since the fiasco of the Stannington gas flood in Sheffield.

At 11pm on December 2, 2022, a burst Yorkshire Water main tore into a Cadent Gas pipe, causing some 200,000 litres to enter the area's gas system in an "unprecedented" incident.

Shocked residents watched in bafflement as water poured out of their gas hobs, metres and appliances.

By the end, more than 3,000 homes were affected, with thousands of families left without power or hot water.

Because repairs required manually turning off the supply at homes, it took 14 days for all repairs to be complete. During that time, many residents felt they were forced to stay in their freezing homes in case it was their day for engineers to come knocking.

It also saw many heartwarming stories of community spirit in the area as residents pulled together to check on their neighbours and help each other through the disaster.

In the gallery below, The Star has recapped the timeline of the fiasco in pictures, which even a year later still has not seen the publication of an independent investigation by Yorkshire Water into what happened.

The Star asked Yorkshire Water when the findings of an independent investigation - which was announced by CEO Nicola Shaw in December 2022 - into the fiasco would be published.

In response, a Yorkshire Water spokesperson said: “Since the water ingress incident in Stannington and Malin Bridge last year, we’ve been working with local communities to get everything back to how it was. We know this was a very challenging incident for local residents to go through, and we’re sorry for all the disruption this caused.

"After the incident, we committed to an independent review as it’s important that we carefully examine what happened during the incident and learn from it. Determining the exact cause of the burst water pipe and subsequent gas outage is incredibly difficult and this review is still underway by independent forensic investigators.

"We’re working closely with those investigators and Cadent to understand the technical learnings and have already put a number of improvements in place. We expect to understand more about the findings in the coming months.

“When we were handed over the customers who had previously been dealing with Cadent for outstanding repairs, we did everything we could to get those remaining customers sorted as quickly as possible. We’ve paid out almost £1million in compensation to local residents alongside the initial automatic payment we gave to homeowners for the additional costs they faced at the time.

 “We’ve also invested in our water network to reduce the risk of this happening again in future. We’ve replaced the section of pipe that had burst last December and installed the new section of pipe away from the gas main, which was laid after the original water pipe was in place.

"We’ve also installed new technology in the area that help us to manage pressure fluctuations, monitor for leaks and improve resilience on the network. This provides real time insights to help us reduce leaks and allow us to respond quicker to bursts.”