​How often should I test my well water?

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• Every Year: Test for total and fecal coliform bacteria.

• Also check the wellhead once a year to make sure it is working properly and ensure that there are no cracks or openings where contaminants can get into your groundwater. 

• Every Two Years: Test for heavy metals, nitrates, nitrites, lead and copper.

• Every Five Years: Test for pesticides and volatile organic compounds (VOCs). If you know of a particular pesticide that is applied in your area, test yearly.

 

Special situations that may require additional testing:

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• If you are pregnant or have an infant at home, you should test your water for nitrates. If you have nitrates in your well water, do not drink the water or use it to prepare baby formula. Use an alternative source of water instead. Boiling water does not remove nitrates.

• If there are known problems with well water in your area,

• If you have experienced problems near your well (i.e., flooding, land disturbances, and nearby waste disposal sites),

• If you replace or repair any part of your well system,

• If you notice a change in water quality (i.e., taste, color, odor).