[justinph]

Doesn't make a lot of practical sense.

* Sewer & water can be done in a piecemeal fashion, whereas fiber requires complicated & precise connections to make work. Not to mention, needs connection to the electrical grid.

* Sewer & water pipes are typically much deeper underground, not necessary for fiber which doesn't freeze.

* Running fiber along a pipe would be difficult, at best. Typically an underground pneumatic pipe trenching tool pulls flexible copper pipe behind it, for water or gas. Pulling fiber along with it on the outside gets complicated or requires some new type of pipe.