1. wastewater from communities that are home to several residential homes. The commercial or the building. This is the quantity of water used, one of which is a fee fiend wastewater mostly made out. Most of the sewage water from the toilet, and is from the wash, which consists of organic scraps and waste contamination exists. 2. the waste water from factories, including wastewater from cooling systems, production systems. Residential buildings and the Shop & cafeteria Substances that may be confused as different chemicals. Radioactive substances Toxic substances Clay, sand and waste disposal into the River, where canals. The poisoning occurred on living organisms in the water. Rotten stinky to birth color. Smell.
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