For much of human history, we’ve tried to move sewage – worthless, dangerous and disgusting – as far away from us as possible.

Now, sewage has become a valuable commodity. Water agencies across San Diego County are working on projects to turn sewer water into water that’s clean enough to spread on lawns or even drink.

In Coronado, a dispute has erupted over who controls sewage from the island and who can profit from it. At the heart of the tension is the Navy’s new campus on the southern end of Coronado.