Send a comment on this item to LII: Send a comment on this item to LII staff, who on weekdays will usually reply within 24 hours. WHO Guidelines for Drinking-Water Quality, Third Edition This guidance document from the World Health Organization includes "significantly expanded guidance on ensuring the microbial safety of drinking-water. ... Information on many chemicals has been revised to account for new scientific information. ... For the first time, reviews of many waterborne pathogens are provided. ... New sections deal with ... emergencies and disasters, large buildings, packaged/bottled water, travellers, desalination systems, food production and processing and water safety on ships and in aviation." http://www.who.int/water_sanitation_health/dwq/gdwq3rev/en/ Asterisk * indicates required field. Your Name Your Email Address * We will not sell or provide your email address to anyone else. Comment * Enter the verification code as it is shown in the box below. This helps prevent automated submissions. *