This note is about simple treatment of drinking water at point-of-use for people in, or just after an emergency. The options suggested are quick short-term measures to provide a safe survival level supply of drinking water from unsafe polluted water sources. The options should be sustainable until a longer-term safe and cost-effective supply is available to the population. The methods described are suitable for water taken from any source but, in general, will only remove physical and microbiological pollution. Search keywords: earthquake, disaster.