The Slatinka water-works is illustrated as practical experience in the environmental impact assessment process. The process related to the building of water-works began in 1993, i. e. before passing the Act. Next steps of the assessment process up to the final record were carried out already after having passed the Act. In the article we describe the assessment process pointing out the most relevant problems and the selection of alternatives. As regards the Slatinka water-works, in the final record in April 1996 it was recommended to realize the work parallels ensuring several measures. At present, almost five years after releasing the final record, it is necessary to stress that the Slatinka water-works has still not been realized.