GEOLOGY

Detailed explanation-1: -Effluents from septic tanks are discharged into trenches for subsoil infiltration or diverted to the sewerage system (when available). Septic tanks are widespread sanitation systems but are often responsible for environmental pollution due to poor purification effects and leakages notably affecting groundwater.

Detailed explanation-2: -It comes from toilets, showers, clothes washers, dishwashers, etc. The contaminants include fecal matter, urine, soaps, detergents, food particles, hair, rags, paper, toys, dead goldfish, and anything else that is disposed in a drain. A person creates an average of 60 to 100 gallons of wastewater every day.

Detailed explanation-3: -General types of water pollutants include pathogenic organisms, oxygen-demanding wastes, plant nutrients, synthetic organic chemicals, inorganic chemicals, microplastics, sediments, radioactive substances, oil, and heat. Sewage is the primary source of the first three types.

Detailed explanation-4: -Depending on its source and collection methods, sewage may also contain a range of chemicals and specialized wastes including industrial chemicals, nutrients such as nitrates and phosphates, heavy metals, pharmaceuticals, medical wastes and oils and greases. These result in additional threats to human health.

Detailed explanation-5: -Hydrogen Sulfide Treatment in Wastewater In most cases, that odor is hydrogen sulfide, a toxic gas formed from septic conditions.