Before the Israeli blockade of the Gaza Strip was imposed, several repair works were under way to improve sanitation in the area.<br /><br />But the projects have now been on hold for more than three years due to the siege.<br /><br />The United Nations says the water system in Gaza is on the verge of collapse.<br /><br />Al Jazeera's Sherine Tadros, reporting from Gaza, explains how overworked and outdated pipelines are polluting the water and making Palestinians ill.
