Dual water systems
Rolling revision of the WHO Guidelines for Drinking-water Quality
Dual water supply systems is included in the plan of work of the rolling revision of the WHO Guidelines for Drinking-water Quality.
Background
Dual water supplies are not addressed in the Third Edition of the Guidelines for Drinking-water Quality. The Guidelines for Drinking-water Quality Final Task Force meeting (Geneva, 2003) recommended that dual water supply systems (i.e., separate systems for domestic use and drinking-water) be considered in the rolling revision. The meeting also recommended that a comment be included in the Fourth Edition on maintaining effective separation of potable and non-potable waters and on the availability of guidance on non-potable water management. WPRO has expressed interest in this area.
Expected end-product(s)
- Brief text on standards and guidelines for dual water supplies for inclusion in fourth edition of Guidelines for Drinking-water Quality;
- Possibly a stand-alone document on dual water supplies
Progress to date
The Guidelines for Drinking-water Quality Working Group meeting (Geneva, 2004) agreed on the need to address this topic in the Fourth Edition. This item was not addressed during the Guidelines for Drinking-water Quality Working Group meeting (Geneva, 2005).