ECOLOGY
ENVIRONMENTAL ISSUES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -#1 Untreated raw sewage Such waste can spread disease-causing organisms and can cause waterborne diseases, such as gastroenteritis, diarrhea, typhoid, cholera, dysentery, and hepatitis. An estimated 58% of the groundwater in the Philippines has been contaminated with coliform bacteria and should be treated [1].
Detailed explanation-2: -The Philippines obtains its water supply from different sources. These include: rainfall, surface water resources, i.e. rivers, lakes, and reservoirs, and groundwater resources. It has 18 major river basins and 421 principal river basins as defined by the National Water Regulatory Board (NWRB ).
Detailed explanation-3: -Generally 95% of water sources in the Philippines have a TDS below 1000 meaning that it’s safe to drink. The exception is the Marilao River with annual average TDS levels ranging from 1, 785 to 3, 265 mg/L.