71.   Development, landscaping, contaminated water and septic system failures have destroyed the rest.

72.   Developments of six or more homes using septic systems would also be required to do that same assessment, as would commercial developments on larger septic systems.

73.   Earthworms used to unclog septic systems.

74.   He thought the technology would work in Delaware, where there are thousands of septic systems statewide.

75.   Her next-door neighbor, Donna Kitson, has had her septic system back up into her house several times.

76.   Last year, the government launched a clean-water campaign for the Mekong Delta, urging people to build more septic systems.

77.   Many of the resorts have inadequate septic systems, resulting in waste finding its way through the porous sand into the sea.

78.   Most of what is discharged from a septic system is nitrogen.

79.   The source of E. coli found in the septic system could not be determined, the report said.

80.   The situation is similarly harsh in the Gaza Strip, where overflowing septic systems pollute the aquifer and overpumping allows sea water to seep in.