The connection to King City, despite the appellation "Big Pipe", is relatively small compared to the overall system expansion governed by York Region, which has also been labeled "The Big Pipe". The construction of this north-south extension to the system requires daily pumping of 30 million litres of water from subterranean aquifers, over its projected five-year construction schedule (lasting to early 2008). This has upset environmentalists greatly, and disturbed some residents of Markham who rely on wells as their source of water. These residents were the first to be affected by construction because of their proximity to the initial area of development.