After heavy storm, well owners warned about contamination risks

Lithuanian well owners are being warned about potential contamination following heavy rainfall. Surface pollutants, including chemicals, agricultural substances like nitrates and pesticides, and microorganisms, can seep into groundwater after intense downpours. These contaminants can originate from nearby livestock farms, chicken coops, or outdoor toilets. "Water contaminated with these toxic substances has no specific taste, smell, or color. Neither boiling nor household water filters will remove them, so if there is a possibility that rainwater could have entered the well, it is crucial to conduct water tests," stated Gintautė Gelumbauskienė, head of the Chemical Research Department at the National Public Health Center (NVSPL). She noted that increased organic pollution might be indicated by changes in water appearance, such as cloudiness, a yellowish-brown hue, or a sweetish taste. The presence of petroleum products signifies serious groundwater contamination, rendering the water undrinkable and requiring the well to be pumped and cleaned. Beyond chemical threats, contaminated water can cause nausea, diarrhea, vomiting, or fever. While boiling can kill bacteria, chemical pollutants persist. NVSPL specialists advise testing for ammonia, nitrites, nitrates, permanganate index, iron, manganese, Escherichia coli, enterococci, and coliform bacteria, particularly as summer concludes, to ensure drinking water safety.

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Water contaminated with these toxic substances has no specific taste, smell, or color. Neither boiling nor household water filters will remove them, so if there is a possibility that rainwater could have entered the well, it is crucial to conduct water tests.