The NewsDox unit of Blue Chalk produced the Living City series in collaboration with The New York Times video department and metro desk. The six-part series looks at a range of major New York city and state infrastructure projects, from subways to waterways, waste management to steam systems.

"A Billion Gallons a day" is the fifth video in the "Living City" series. It looks at the New York City watershed, where rain water and snow melt take a three-month journey to the city's taps. Covering parts of eight New York counties and a small sliver of Connecticut, the watershed includes 19 reservoirs and three controlled lakes. It has the capacity to hold 5.8 billion gallons of water. And 9.4 million people depend on it every day. 

The Living City series is the first major initiative to come from NewsDox, a division of Blue Chalk Media designed to report and produce visual journalism with news organizations and knowledge brands.