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| Municipal and Industrial waste water treatment plant | | |
| Waterworks | | primary water treatment |
| Factories: | | food, mechanical, iron metallurgy, chemical, pharmaceutical, cosmetic, microelectronic, fishing-industry, dye-works, printing-works, mineral and thermal water |
| Hospital and nursing home | | |
| Agricultural reclamation of treated waste water | | |
| Restaurant and public services: | | bar, motorway restaurant, table, hotel |
| Train: | | sleeping-car, dining-car, toilette |
| Public and private swimming pools | | |
| Fruit and vegetable washing | | |
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