The New River, a London waterway opened in 1613, supplies drinking water from the springs of which river?
London water supply infrastructure:  For much of London's history, private companies supplied fresh water to various parts of London from wells, the River Thames and in the three centuries after the construction in 1613 of the New River, the River Lea, which has springs that divert alongside Hertford at an elevation of 40 metres AOD.
i don't know