In his bimonthly column, Keivan Rafie takes a look at water treatment and discharge. One thing is for sure, where there are tunnels, there is water. Getting water out of the tunnels and to the surface for treatment and discharge off-site doesn’t have to be overwhelming—but it is critical for ensuring uninterrupted operation. Water management—both within the tunnel and at the surface—is a key consideration in any tunneling project. Read on to learn about the treatment processes and discharge limits you might run into in your next tunneling job.