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In page Cairo:
"Water pollution is also a serious problem in the city as the sewer system tends to fail and overflow. On occasion, sewage has escaped onto the streets to create a health hazard. This problem is hoped to be solved by a new sewer system funded by the European Union, which could cope with the demand of the city.[citation needed] The dangerously high levels of mercury in the city's water system has global health officials concerned over related health risks.[citation needed]
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