Drinking-water quality regulations and standards developed or revised in accordance with this guidance will reflect the best practices identified in the WHO Guidelines for Drinking-water Quality to most effectively protect public health. Moreover, the regulations and standards will consider local needs, priorities and capacities to ensure that they are realistic and appropriate. Topics covered include:<br> - Guiding principles<br> - Getting started<br> - Selecting parameters and parameter limits<br> - Setting out compliance monitoring requirements