GEOLOGY

Detailed explanation-1: -Contamination of drinking water sources by sewage can occur from raw sewage overflow, septic tanks, leaking sewer lines, land application of sludge and partially treated waste water. Sewage itself is a complex mixture and can contain many types of contaminants.

Detailed explanation-2: -Sewage itself is a complex mixture and can contain many types of contaminants. The greatest threats posed to water resources arise from contamination by bacteria (E-Coli, Coliform), nitrates, metals, trace quantities of toxic materials, and salts.

Detailed explanation-3: -Sewage is a mixture of water (from the community’s water supply), human excreta (feces and urine), used water from bathrooms, food preparation wastes, laundry wastewater, and other waste products of normal living.

Detailed explanation-4: -Taking the wastewater away Whenever you flush the toilet or empty the sink, the wastewater goes down the drain and into a pipe, which takes it to a larger sewer pipe under the road. The sewer then joins our network of other sewers and takes the wastewater to a sewage treatment works.