Cryptosporidium parasite detected in Minnesota groundwater

ScienceDaily | 3/21/2019 | Staff
MysticHeart (Posted by) Level 3
Most Cryptosporidium outbreaks associated with drinking water sources have been traced to surface waters such as lakes and rivers that become contaminated by sewage discharge or livestock runoff. In contrast, water from aquifers deep within the ground was not thought to be as vulnerable because the overlying soil and sediments can filter out Cryptosporidium oocysts. The U.S. Environmental Protection Agency requires that public water systems with a surface water source monitor and treat for Cryptosporidium contamination, whereas groundwater is exempt from these regulations unless known to be infiltrated by surface waters. Mark Borchardt and colleagues at the U.S. Department of Agriculture-Agricultural Research Service, U.S. Geological Survey and Minnesota Department of Health wondered if they could detect Cryptosporidium parasites in public water system wells with variable surface water influences.

Over a two-year period, the researchers collected water samples from...
(Excerpt) Read more at: ScienceDaily
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