How does a well get contaminated?

The well's defenses against contamination are its surface sanitary seal, annular seal, and well casing. If the annular seal is too shallow, the casing ruptured, or the surface seal broken by holes or missing gaskets, contaminants can enter the well. If a well is located too close to a source of contaminants, these may enter through one of these routes or percolate down through the ground, and enter the well at depth.

Show All Answers

1. What does a water well look like?
2. How does a well get contaminated?
3. What if the water source for my home is ditch water?
4. What to do about flooded water wells?
5. My property has a hand dug well. Is this water OK to drink?
6. What is a four hour well yield test and when is it needed?
7. Why do I have to submit a current bacteriological analysis of my well water to Environmental Health Services? I drink it every day and I am not sick.
8. Can I apply for my own well permit?
9. Where can I obtain a bacteriological analysis of my well water?