Our paper presents an analysis of the factors directly affecting the quantity and quality of sewage discharged from tourist facilities located in national parks and other protected areas regarding natural assets and landscape. The study was based on the results of analyses carried out over one calendar year in the mountain hostel located in Chochołowska Glade in Tatra National Park. The performed analysis revealed that domestic sewage generated in tourist facilities is characterized by high variability, both quantitative and qualitative. These parameters are influenced by: the nature of the object and its location, the load of the facility with tourist traffic and the resulting daily and hourly water consumption. These conditions pose significant problems in the development of efficient sewage treatment technologies. In view of the obtained results, it was concluded that sewage treatment plants, suggested for the use in tourist facilities located in foothill and mountain areas, should be resistant to periodically occurring hydraulic underloading or overloading, as well as to frequent changes in the daily and hourly concentrations of pollutants. They should also be insensitive to frequent and sudden changes in weather conditions, mainly temperature. This type of sewage treatment plant included the solutions based on soil-plant systems or sand filters, as well as the ones located in thermally insulated buildings – sequential biological reactors and flow reactors with biological membrane module.