The spicket is fresh water tank drain. If you have overflow drains, they should be neat the fresh tank. Some have two low water drain pipes that exit depending on year/model etc. I have heard some exit underneath kitchen sink, and did not exit to the outside of bottom board. Mine exit on front door side, about half ways between front axle and hitch, and each has a on/off valve, as does the fresh tank drain. Would be best to post your model, and perhaps someone who has same could help you.