The present Ordinance lays down provisions relating to installations handling substances being a hazard to water. Article 3 establishes that installations for the loading and unloading of substances constituting a hazard to water and installations for the storage and filling of liquid manure, slurry and silage seepage must be designed, installed, erected, maintained and operated in such a way that the best possible level of protection of waters from pollution or other detrimental changes to their properties is achieved. The text deals with the following aspects: sphere of application, definition of terms, basic requirements, requirement for special installations, general accepted technological rules, degrees of harmfulness, installations in protected areas, pipe lines, waste water facilities, experts, technical surveillance organization, penalties and existing facilities. The text consists of 26 articles and 2 Annexes.