Composting toilet at campsite, Finland. Composting toilet at campsite - on banks of Tornio River, Lapland Many sites visited by tourists in Finland, including weekend houses and campsites are provided with composting (dry) toilets. A composting toilet converts human waste into organic compost, saves water and minimises our impact on the environment. The waste is decomposed by aerobic microbes and this process destructs pathogens (e.g. coliform bacteria) as the waste is further broken down. The r