갤럼이 물어보길래 함 찾아봄. 다양한 기준이 있겠지만 일단 대장균으로 보면
클랑강
"The present of total coliform bacteria and fecal coliform, E. coli in Klang River was in the range of 102 to 105 cfu/100mL."
-WATER QUALITY OF THE KLANG RIVER, SELANGOR, MALAYSIA AND HEAVY METAL REMOVAL USING PHYTOREMEDIATION(2021년 논문)
센상
"As recently as June 30, following rain the previous day, E. Coli levels increased to around 2000 CFU/100mL at Alexandra III Bridge. That’s double the level needed for “good” water quality, as per World Triathlon standards."
River Seine still not safe for swimming on most days due to E. Coli bacteria levels, with Olympics set to start on July 26 | CNN
Weeks before the Olympic Games are set to begin in Paris, the River Seine is still not safe for swimming on most days due to high levels of E. Coli bacteria in the water, according to official data.
edition.cnn.com
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