In 2021, access to running water and clean drinking water is a given for most Americans. The Census Bureau has even considered dropping a question on plumbing access from the U.S. census questionnaire. But many of the nation’s tribes still lack running water, access to clean water, and even flushing toilets. Native American households are 19 times more likely than white households to lack indoor plumbing, according to the U.S. Water Alliance, and more likely to lack piped water services than any other racial group. That problem is at an inflection point for the Navajo Nation and 29 other tribes in the Colorado River Basin, which stretches from the Rocky Mountains to Mexico.