Nitrate is a strong candidate for routine well-water testing because you cannot see, smell, or taste it. CDC and state well programs recommend regular testing, and households with infants or pregnancy plans should usually move nitrate closer to the top of the checklist.
Key Takeaways
- Minnesota guidance recommends testing private wells for nitrate every year and also testing if you are planning a pregnancy or if an infant will use the water.
- EPA and state well programs focus heavily on nitrate in private wells near fertilizer use, feedlots, septic influence, or other nutrient sources.
- Use an accredited or state-certified laboratory because nitrate decisions can directly affect infant feeding and drinking-water choices.
- A home strip can be a quick screen, but lab testing is the better basis for a decision about whether the water is safe for formula or pregnancy-related use.
- If nitrate is elevated, do not assume boiling will help. Boiling can concentrate nitrate because water evaporates while the contaminant remains.
Who Should Test Sooner
Households with bottle-fed infants, pregnant people, or a new well near agriculture or septic influence should treat nitrate as an annual or situational must-test item. If nearby wells have nitrate issues, your well deserves direct testing too. Groundwater nitrate is very local.