How often should I have my well tested?

Wells drilled after July 2008 are tested within 30 days, although wells drilled before that were tested only on request. After successful initial testing, a properly constructed well would not need re-testing for another 5 or 10 years, however whenever a well has been opened up for repairs or pump replacement, it should be retested. Also, if there are any distinct changes in the water quality, we recommend that water testing be done.

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1. Do I need to get a permit to drill a well or repair my existing well?
2. What inspections from the Health Department are required for my well?
3. What do I need to do to maintain my well?
4. When does a well need to be abandoned and why?
5. How can I test the quality of my private drinking water supply?
6. What is a bacteria test and what does it tell me?
7. What do I do if bacteria are found in my well?
8. What happens if the bacteria return after chlorination?
9. How often do I need to disinfect (chlorinate) my well?
10. How often should I have my well tested?
11. My well has a terrible rotten egg (sulfur) smell. What do I do?
12. I am having problems with the quality of my water (cloudy, red, black, or brown colored, green staining, etc). Where can I find help?
13. Do I need to get my water tested for pesticides or petroleum products (VOC)?