Moreover the groundwater has to be diluted with rainwater before it can be used to water fruit trees, because fruit is spoiled by exposure to too much salt.
然而，裝置雨水收集器對無力將傳統茅草屋頂改裝為硬鋪面的外島居民而言，有其困難，也因此，政府考慮利用各集會所、學校教室及教堂的「大」屋頂來收集雨水。