Problems with meeting new (10 μg/L) standard for lead in drinking water: Polish perspectives

0
- By:

Courtesy of IWA Publishing

In the current (2011) edition of ‘Guidelines for Drinking-water Quality’, the World Health Organization sets the guideline value for the concentration of lead in drinking water at 10 μg/L. This value, however, is a provisional one on the basis of treatment performance and analytical achievability. It is extremely difficult to achieve lower concentrations by central conditioning, such as phosphate dosing. Council Directive 98/83/EC of 3 November 1998 on the quality of water intended for human consumption has set 10 μg/L as a target parametric value. The parametric value was 25 μg/L until December 2013. In Poland, the 10 μg/L standard came into force on 1 January 2013. A tap survey based on random daytime sampling (RDT) was conducted in 15 water supply zones in Poland. A total of 1440 RDT samples were collected during the period 2007–2012. The survey revealed that on average 8.4% of samples collected show lead concentrations exceeding 10 μg/L. In some water supply zones, the percentage of non-compliant samples reached 60%. This suggests that a substantial number of water companies in Poland will have to undertake significant measures to achieve proper quality standards in water supplied to consumers.

Customer comments

No comments were found for Problems with meeting new (10 μg/L) standard for lead in drinking water: Polish perspectives. Be the first to comment!