Those groundwater quality standards can be established at the national level, at the level of the river basin district or at the level of body or group of bodies of groundwater identified as being at risk .
Šos gruntsūdeņu kvalitātes standartus var noteikt visai dalībvalsts teritorijai, atsevišķam upes baseinu apgabalam, tai gruntsūdens tilpei vai tilpju grupai , kura atzīta par apdraudētu .