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House water filtration system to drinkable condition. Glass of clear water after reverse osmos filtration and glass of dirty water on tabletop on kitchen. Evidence of contamination of tap water.
Draining sewage from pipe into river, pollution rivers and ecology
Two Environmental Engineers Inspect Water Quality and Take Water Samples Notes in The Field Near Farmland, Natural Water Sources maybe Contaminated by Toxic Waste or Suspicious Pollution Sites.
Analysis of tap water in the house, hand in blue glove draws water into a test tube from the tap for laboratory test, close-up
Unhygienic and dirty drinking water

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