In the article, special attention is paid to practical realization of
the ''right res know'' about pollutants using the World Wide Web, Five
systems of PRTR (Pollutant Release and Transfer Registries) are intro
duced showing their typical features and variations, The varied PRTR i
nformation is provied by the UNEP organization. The access to Canadian
system PRTR - NPRI (National Pollution Release Inventory) through Int
ernet has been found to be the best way. Also British CHRI system (Che
mical Release Inventory of the organization friends of the Earth), Ame
rican TRIS (Toxic Release Inventory System) and Australian NPI (Nation
al Pollulant Inventory) and Czech ECONNECT are presented as very effic
ient Idols for the practical realization of the ''right to know''.