An inspection of the area around Bathurst Island Mission was made to pick a bore site for domestic water for the Mission. The Mission is on a low, flat laterite plateau that has developed on Cretaceous mudstone. The mudstone is at least 1,000feet thick and is a poor aquifer, so that the underground water supply will be restricted to the laterite, which is slightly more than ten feet thick in most places. The existing wells should be deepened, and radial horizontal holes should be drilled in the hope of intersecting more water-bearing cavities in the laterite. Pollution is an important problem in this area. All abandoned wells should be filled in and the wells that are in use should have a concrete curb around the top and should be tightly covered.