Pathogens consist of viruses, bacteria and parasites. These contaminants may be derived from sources like soil that is contaminated by animal waste, surface water runoffs from farms around or crops, chemical residues on the crop plants, pesticides, fertilizers used near wells, everyday products, such as paints and cleaners and paints that were applied on the area of the well before you started using it.
As well as being risky to the health of humans through the contact of these substances through the ingestion of contaminated water or inhalation via showering with it, think about the harm they could cause if they enter your home via leaks that occur around pipes, for example.
Water is an investment is required to invest. You can maintain your well with some vigilance. In the event that you want to be more involved in the upkeep of your well take into consideration hiring the services of a local plumber, or another specialist who can assist in any problems that may arise as you maintain good water quality.