Major new water works start at the Gorse Hill Reservoir off the Devils Wall, Aughton, soon with signs advising drivers of heavy plant movement on Liverpool Road already in place.
A spokesman for UU told QLocal yesterday afternoon: "This is all part of a £10m scheme to provide further resilience to our network and security of supplies to customers.
"We will build a new trunk main within the boundary of the treatment works, providing the capacity to bypass anyone of the five on-site reservoirs and go straight to the local water network.
"The benefit for customers in the future will be, when we need to inspect or carry out routine maintenance on any one of the five reservoirs, we can keep customers taps flowing without interruption.