 Concerning sanitation, while most of the population is served by sewers, according to one source about 12 million people (18%) out of 65 are served by on-site sanitation systems such as septic tanks.The above-mentioned inventory by the Ministry of Agriculture notes that out of 40m inhabitants of rural areas – 25m permanent and 15m seasonal inhabitants – 21m are connected to a sewer system, 10.6m should be connected and 9.6m cannot be connected.The total of those not connected to sewers (20.2 million) is higher because it includes seasonal inhabitants.