PovzetekV prispevku so podani metodolo{ki pristopi in rezultati prve ocene koli~inskega stanja enaindvajsetih teles podzemnih voda v Sloveniji. Ocena razpolo`ljivosti vodnih koli~in v teh telesih v obdobju od 1990 do 2001 je 1,43 ⋅ 10 9 m 3 /leto oziroma 727,4 m 3 na prebivalca letno. V letu 2002 odvzeta podzemna voda (0,23 ⋅ 10 9 m 3 /leto) je predstavljala 15 odstotkov razpolo`ljivih zalog podzemnih voda v Sloveniji. Za vsa telesa podzemne vode je bilo ocenjeno dobro koli~insko stanje. AbstractThe framework for the integrated water management of the entire EU area has been set, when the European Parliament and Council passed the Directive 2000/60/EC in 2000. According to the directive, the evaluation of meeting the environmental objectives is based also upon the assessment of quantitative and chemical status of individual groundwater body.The assessment of quantitative status of groundwater bodies under the Groundwater Directive of EU is based on the definition of the available groundwater quantity. This is a long period mean annual renewable quantity of water in the groundwater body, reduced by the quantity of the long period annual groundwater discharge, which is required for sustaining ecological objectives concerning surface water bodies and preservation of the ecosistems, connected with the groundwater bodies.Methodological approach and the results of the first groundwater quantitive status assessment for 21 groundwater bodies in Slovenia are given in this paper. The assessment of the available groundwater quantity in Slovenian groundwater bodies in the period from Ocenjevanje doseganja okoljskih ciljev po tej direktivi sloni na ugotavljanju tudi koli~in-skega stanja po posameznih telesih podzemne vode, ki ga dolo~amo kot razpolo`ljivo koli~ino podzemne vode. To je obdobna srednja letna obnovljiva koli~ina vode v telesu podzemne vode, zmanj{ana za koli~ino ob-