council resolut februari futur commun groundwat polici council european commun underlin vital import groundwat form life human health safeguard ecosystem state concern lower groundwat level pollut aquif note import resourc limit conserv futur major polit econom environment imper exploit strict observ principl sustain develop observ freshwat manag polici conduct coordin action agent public privat sector take due account principl subsidiar take note final declar ministeri seminar held novemb futur commun groundwat polici call commiss submit middl detail action programm declar provid guidelin draft propos revis council direct eec decemb protect groundwat pollut caus danger substanc incorpor gener freshwat manag polici includ freshwat protect request compet author group involv contribut conserv natur resourc area control