Sanitation refers to public health conditions associated with clean water and adequate treatment and disposal of human excreta and sewage. Preventing human contact with feces is a component of sanitation, as is hand washing with soap. Sanitation systems aim to guard human health by providing a clean environment which will stop the transmission of disease, especially through the fecal–oral route as an example, diarrhea, a main explanation for malnutrition and stunted growth in children, are often reduced through sanitation.[3] There are many other diseases which are easily transmitted in communities that have low levels of sanitation, like ascariasis (a sort of intestinal worm infection or helminthiasis), cholera, hepatitis, polio, schistosomiasis, and trachoma, to call just some. a variety of sanitation technologies and approaches exists. Some examples are community-led total sanitation, container-based sanitation, ecological sanitation, emergency sanitation, environmental sanitation, onsite sanitation and sustainable sanitation. A sanitation system includes the capture, storage, transport, treatment and disposal or reuse of human excreta and wastewater.Reuse activities within the sanitation system may specialize in the nutrients, water, energy or organic matter contained in excreta and wastewater. this can be remarked because the "sanitation value chain" or "sanitation economy". The people liable for cleaning, maintaining, operating, or emptying a sanitation technology at any step of the sanitation chain are called "sanitation workers"it obvious that there are structural and organizational similarities. this can be partially thanks to the connection between the function of the 2 systems. Both systems contain large networks of vessels, the vessels in both systems are composed of smooth muscle walls lined with a monolayer of endothelium, and that they both direct complexity from larger multi-layered vessels to capillaries composed mostly of endothelium. However, the differences between the 2 also correlate with their function and are evident at the structural, cellular, and molecular levels. Such similarities and differences make a bearing on how closely the tissue engineering strategies for every system should correlate.