But the EPA drinking-water data includes one outlier an unusually, but not dangerously, high reading in a drinking water sample from Chatanooga, Tennessee.
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First, the bacteria is removed from the water sample and cultured.
Thanks to a broad collection of water sample, the Tara Oceans expedition allows a better understanding of the environmental conditions affecting the sampled organisms at a global scale.
If a polluted water sample contains a strain of E. coli that is not found in humans, you can be pretty sure that sewage is not the source of the pollution.
Veolia is required to sample water from the surrounding area regularly.
"We will aspire to sample the water column everyday, " he told BBC News.
The US space agency (Nasa) and the Russian academy of sciences are planning to break through the ice to sample the water for life.
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The participating pupils enthusiastically found the pH of a sample of water from Intaka Island (a wetland in Cape Town) and thereafter filtered and purified the water.
In exchange for this concession, Range agreed to sample 20 private water wells surrounding its pad site every three months for a year.
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Therefore, a puff of water appearing on a Martian sample cooked to that temperature would imply that it is partly made of clay.
British experts, tasting an array of expensive bottled waters for a consumer magazine, awarded top marks to a humble sample of tap water from Thames Water, a less-than-fashionable utility.
This week the team decided to use a scoop on the arm to dig up a sample of dirt and found it contained about 1 percent water ice, NASA researchers said.
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Each sample is served in stemmed glassware as 11 judges inspect the water for clarity and smell before tasting it.
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