A common water source that is on the Earth's surface is the largest water source such as Nong Huay. Canals, rivers, lakes, etc., or swamp may be a water source such as a pool man made reservoirs, etc, but even as a water source, source. Generally not suitable for direct consumption There must be improvement before, because that source is surface water flowing through the various soluble organic and inorganic objects they remove, as well as pathogens and toxins. When consumers will cause against the body, it needs to have appropriate quality improvement first.
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