2. Water with microbial pathogens, or include bacteria, viruses, protozoa, fungi, parasites that cause diseases like Gastrointestinal diseases, liver diseases, parasitic diseases and skin diseases, etc.
3.Water with oil or fat additives in large quantities will hinder transfer oxygen into the water resources Or living of aquatic animals and plants 4
.Water dissolve salt. Which may be melted down or sea water seep into the soil contamination and water quality deterioration is not suitable to ใช้อุ sleep consumer consumption or agriculture.
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