Guide Blog

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24.01.2019 | 14:36
автор Natali - guide
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03.10.2018 | 15:58
автор Oleg - guide
History of sewage

Presumable first sewage refers to Indus valley civilization (2500 years BC). It’s break structure connecting with underground system. First sewage served the city with the population 40 thousands persons.

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03.10.2018 | 15:39
автор Natali - guide
Know how: dry closets Peepoo

Problem of toilets is big problem in countries of Africa.

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