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When backpacking in a coastal region, you sometimes have access to both fresh water (e.g. a stream) and salt water (sea, bay, etc.). If you do not treat the water used for washing dishes, what are...
When backpacking in a coastal region, you sometimes have access to both fresh water (e.g. a stream) and salt water (sea, bay, etc.). If you do not treat the water used for washing dishes, what are...