Causes of drinking water pollution are and could be underground storage leakages, for ex: if there was a leak in one of the pipes in a water company. Read more at https://www.epa.gov/ust/leaking-underground-storage-tanks-corrective-action-resources. And lastly, if you use a well then if your sewage pipes leak then your sewage water could leak and soak up into your water, and also if you you use fertilizer then the chemicals from the fertilizer could soak up and get into your well water read more at https://agwt.org/content/lawns-safe-wells .
Drinking water can be polluted in these ways. Groundwater pollution caused by pesticide contamination from soil, ex: if you have a well the soil contamination could get in your water. Also if you live in somewhere where you don’t have tap water then there could possibly be microorganisms in your water, also there could be Anaemia Arsenicosis Ascariasis, Botulism, Campylobacteriosis, Cholera, Cryptosporidiosis, etc. read more at… http://www.lenntech.com/library/diseases/diseases/waterborne-diseases.htm.
And lastly nutrients that help plants grow and that can possibly be in fertilizers can occur in your drinking water. And also the eutrophication, excessive richness of nutrients in a lake or other body of water, frequently due to runoff from the land, which causes a dense growth of plant life and death of animal life from lack of oxygen.
The point source of pollution is, for ex: a leaking pipe. A point source has to be something you can point at and say “ that is the source of that pollution”.
A non-point source is when there is so many sources of pollution you don’t know where the source is or there is too many places it is coming from.
We could stop this pollution by rethinking about the pipes we use. If there are leaks then lets buy new ones not just put some glue on it! Most people use plastic pipes and some use metal. We need more protective pipes, and cleaner pipes, what if we put filters in the pipes? And what if we used more metal pipes? This problem could potentially kill a humongous amount of people if we don’t fix it. Millions have already died in Africa of guinea worm because they don’t have filters luckily the carter center has worked on it, and they have filters now.
So what do you say, do you want the change?