Environmental engineering is a name for work that has been done since early civilizations, as people learned to modify and control the environmental conditions to meet needs. As people recognized that their health was related to the quality of their environment, they built systems to improve it. The ancient Indus Valley Civilization had advanced control over their water resources. The public work structures found at various sites in the area include wells, public baths, water storage tanks, a drinking water system, and a city-wide sewage collection system. They also had an early canal irrigation system enabling large-scale agriculture. Environmental engineers apply scientific and engineering principles to evaluate if there are likely to be any adverse impacts to water quality, air and quality, and agricultural capacity, ecology, and noise. If impacts are expected, they then develop mitigation measures to limit or prevent such impacts. An example of a mitigation measure would be the creation of in a nearby location to mitigate the filling in of wetlands necessary for a road development if it is not possible to reroute the road.

In the United States, the practice of environmental assessment was formally initiated on effective date of since that time; more than 100 developing and developed nations either have planned specific analogous laws or have adopted procedure used elsewhere. NEPA is applicable to all federal agencies in the  Environmental engineers evaluate the water balance within a  and determine the available water supply, the water needed for various needs in that watershed, the seasonal cycles of water movement through the watershed and they develop systems to store, treat, and convey water for various uses.

Water is treated to achieve water quality objectives for the end uses. In the case of a  supply, water is treated to minimize the risk of  transmission, the risk of  illness, and to create a palatable water flavor. Designed and built to provide adequate water pressure and flow rates to meet various end-user needs such as domestic use, fire suppression. Environmental engineering is the application of scientific and engineering principles to improve and maintain the environment to: protect human health, protect nature's beneficial ecosystems, and improve environmental-related enhancement of the quality of human life The primitive conditions were intolerable for a world national capital, and the government brought in its scientists, engineers, and urban planners to not only solve the deficiencies, but to forge Berlin as the world's model city. A British expert in 1906 concluded that Berlin represented "the most complete application of science, order and method of public life," adding "it is a marvel of civic administration, the most modern and most perfectly organized city.

The emergence of great factories and consumption of immense quantities of coal gave rise to unprecedented and the large volume of industrial chemical discharges added to the growing load of untreated human waste. Pollution became a major issue in the United States in the early twentieth century issue with air pollution caused by coal burning, water pollution caused by bad sanitation, and street pollution caused by the 3 million horses who worked in American cities in 1900, generating large quantities of urine.

Best Regards,
Nicola B
Editorial Team
Journal of Biochemistry & Biotechnology