A number of councils are considering delivering fast fibre-based broadband to their citizens using the sewer system.
The UK has an estimated 360,000 miles of sewers, which could potentially be used to expand the fibre network without digging up roads.
H2O Networks says it is already in talks with the councils in Bournemouth, Dundee and Northampton about becoming the first town to adopt a fibre broadband system to the majority of residents.
Up to now, it has mainly been businesses that have taken advantage of H2O's sewer-based fibre broadband offering.
Elfed Thomas, managing director of H2O Networks, said, "Our Fibrecity system will provide towns or cities speeds of up to 100mbps. This solution will help to resolve the issue of insufficient connectivity bandwidths, caused by outdated infrastructure.