A lot of Denver's water starts on the other side of the mountains

Turn on a tap in Denver and the water has often traveled a long way to get there.

Denver sits on the dry east side of the mountains, but a share of its drinking water is collected high in the Rockies and moved across the Continental Divide through tunnels and reservoirs. Water managers gather mountain snowmelt on the wetter west side and bring it east to the Front Range, where most of the state’s people live.

Why this matters to a normal resident: it ties Denver to water decisions far from the city. Drought in a mountain basin, reservoir levels, and long-running agreements about who gets which river all reach back to the Denver tap. It is also why “where does the water come from” is a fair question even inside a big city.

For how the system works, start with the local water provider and the state’s water agency.