How is collected rainwater made safe to drink?
Although it is common throughout the world to drink water untreated, we are filtering and treating the drinking water to a very high standard. The water systems have been monitored independently by Building Services Research Association & more recently by Loughborough University proving their quality. Collected water is stored in underground cool, dark tanks that provide a clean environment. The water is then passed through a 5 mm string filter to remove any remaining small matter, and then through a combined carbon/heavy metal filter to remove any dissolved chemicals & heavy metals. Finally it is subjected to ultra violet light to kill bacteria or viruses. Non-drinking water goes via a sand filter before reaching the houses. This removes particles and has some bacteriological action. However this is not designed for drinking purposes.
