Remember: Dubai built all these luxury buildings and forgot one small, vital thing — solid and liquid waste disposal and treatment.
So the folks in Dubai load it in tank trucks to dump it in the desert. The convoys stretch for miles and the traffic jams are for days before the drivers can dump their loads and go back for another.
Arabs are such rocket scientists — NOT.
“Because of the long queues and delays, some tanker drivers resort to illegally dumping the effluent into storm drains or behind dunes in the desert. The result of sewage dumped into storm drains is that it flows directly into sea of the Persian Gulf, near to the city’s prime swimming beaches. Doctors have warned that tourists using the beaches run the risk of contracting serious illnesses like typhoid and hepatitis.”
Source: Wikipedia