Answer:
Shutting down factories that discharge materials to rivers.
Step-by-step explanation:
Water is one of the main natural assets that humans need to survive. One of the most urgent problems that must be presented soon is access to drinking water, due to the threat that access to fresh water presents today.
One of the main points when controlling the current water pollution in the surface waters of the United States is closing the factories that discharge materials to the rivers. For this point to be achieved, the use of chemical and physical products that pollute, part of which are in factories, must be prohibited. It may not sound so urgent, so it is necessary that these initiatives come from competent authorities that are aware of the danger that these materials can cause to surface waters.