SSE Enterprise Telecoms is working with Thames Water to deploy fibre optic cables in London's sewer system.
The companies believe that this partnership will lead to fibre networks being created in key locations up to ten times faster than would otherwise be the case, as they make use of existing infrastructure.
Mike Magee, Director of Service Solutions at SSE, commented: "Businesses fundamentally rely on their network to underpin everyday operations.
"With an ever-increasing demand for connectivity, network infrastructures require higher resiliency and improved diversity."
Mr Magee pointed out that in the City of London area alone, as many as 3,000 finance and insurance businesses are "vying for connectivity".
This, he said, has made the demand for unique and diverse network routes difficult to achieve.
However, he stated that leveraging the waste water network is a way to solve this problem.
Head of Property at Thames Water Richard Hill added that using sewers in this way will reduce roadworks and traffic congestion while fibre is being rolled out. "It’s great to help a fellow utility company do the same by allowing them to make use of our existing infrastructure," he stated.