How can I eliminate coliform bacteria from my well water?

If coliform bacteria are present, the source of the problem should be identified. Resampling from several locations within the water system may be helpful. The entire water system may need to be thoroughly flushed and disinfected before a negative bacteria sample can be obtained. A well drilling contractor or a Washtenaw County Sanitarian (PDF) can help identify structural defects in the system. After the defects are corrected, the system should be disinfected and the water retested before drinking.

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1. How often should I test my well water for bacteria?
2. How do I test my well water for bacteria?
3. What should I do if coliform bacteria are detected in my well?
4. What do my test results mean?
5. How can I eliminate coliform bacteria from my well water?
6. How can bacteria get into drinking water?