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There are several answers to that.

  • Dumping waste and sewage
  • Algae
  • Shark attacks
  • Marine snow

There can be several answers to your question. It depends on where the water is. If you set a glass of water out on your kitchen, then it could get contaminated by a few things. If it was sitting outside on the ground, then there are other factors to consider.

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10y ago

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