71.   Broek said rather than linking the homes to a public sewer system, it would be less expensive and less intrusive on the environment to put in public water.

72.   Despite efforts to contain the spill, some of the acid apparently penetrated the local sewer system and released deadly hydrogen monosulphide, he said.

73.   Despite efforts to contain the spill, some of the acid apparently penetrated the local sewer system where it reacted, releasing a deadly hydrogen monosulphide, he said.

74.   Dr. Mohamed Mohamud Fuje at Dr. Hassan Jiis Memorial Hospital complained aid agencies were paying little attention to Mogadishu, which has no sewer system or clean water supply.

75.   Giza has become overrun with migrants from the countryside, many of whom live in makeshift homes supported by overused, leaky water and sewer systems.

76.   He said the notification requirement is aimed at getting local officials to improve sewer systems to better safeguard against overflows.

77.   In past years, leaks from the sewer system were blamed for the dead fish in the lagoon that is linked to the sea via a canal.

78.   Investigators were looking into the possibility that hazardous materials were being illegally dumped into storm drains and from there entering the sewer system, Lawson said.

79.   Investigators later determined the blast was caused by gasoline that had leaked out of an underground pipeline into the sewer system.

80.   Investigators were looking into the possibility that hazardous materials were being illegally dumped into storm drains and from there entering the sewer system, Lawson and Gordon said.