Rainwater catchment tank in Thailand

Water and sanitation This woman is washing bowls next to rainwater catchment tanks in Thailand. Rainwater catchment is an underutilized source of pure water, either as a main method or as a supplement for drinking. Large amounts of water will run-off large areas of roof to waste if it is not trapped. A small additional cost of guttering and a tank can supply a family with a source of water inside or close to the house. This system relies on the roof being made from a suitable material such as corrugated iron. The use of rainwater for domestic purposes reduces human contact with natural water sources, such as rivers or pools, which may be contaminated with sewage or infected with parasites.