<![CDATA[ABSTRACT. Research has been carried out to determine the content of the bacterium escherichia coli in well water dug in the sub-district of Lirung, regency of the Talaud Islands. Water is one of the sources of living needs of living things, humans, animals and plants. Well water is a means of clean water from the soil for daily use, such as drinking water, cooking, washing and bathing. Therefore, the water must be pollution-free and meet the quality requirements for clean water. e.coli bacteria are bacteria that generally live in the intestines of humans and animals. This research uses a quantitative descriptive method. The results showed that 9 samples of water wells taken from 3 sites in the Lirung sub-district, in the regency of the Talaud Islands, contained e.coli bacteria which exceeded the maximum threshold not in accordance with the regulations of the Ministry of Health RI No. 416 / MENKES / PER / IX / 1990   Keywords: Bacteria Escherichia coli, Dug Well Water.]]>
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