Wells may hold a risk

It was an era when every house did not have a septic tank and when farming was far less intensive, with no slurry to spread on fields or to escape from pits. It was also a time when rivers were clean and full of trout, as we remember from days of youth.
There was nothing quite like slaking your thirst on warm summer days from those wells all around the countryside, some with stone walls and steps leading down to them.