Grey heron infected with West Nile virus A grey heron in the Noord-Holland-Noord region has tested positive for the West Nile virus. The virus is rare in the Netherlands. Bas van de Meulengraaf
Proposal for water quality standards for PFOA RIVM proposes water quality standards for perfluoro octanoic acid (PFOA). PFOA is a man-made chemical that is used to protect surfaces.