The establishment of good chemical status criteria was one of the elements of the mandate of Article 17 of the WFD which had to be set in the new Groundwater Directive.
Bhí socrú critéar um dhea-stádas ceimiceach ar cheann de na gnéithe de shainordú Airteagal 17 den WFD nárbh mór a leagan sa Treoir nua i leith Screamhuisce.