How to eliminate water in crawlspace
Often times the best location to place the drain lines along a footing is on the outside of the building structure. This allows collection of the water before it enters the area under the building. It also allows trenching away from the building toward a drain field so there is a place for the collected water to go.

If you do put the piping inside the footing perimeter you may need to also install a sump pit at the down flow end of the pipes. Then a sump pump is installed to move the water to a drain or to pump it outside and away from the building structure.