The allowance concerns drawing water from the opposite side of an extensive pond; it does not declare the actual contaminated spot permissible in every condition.
If impurity or its effect is present at the point of use, that point is assessed accordingly. The distant side is distinguished because impurity is not apparently reaching it.
The place where contamination entered and the place where water is drawn are different legal considerations.
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Impurity in Stagnant and Running Water, Large Ponds, and Aquatic Creatures
The allowance concerns drawing water from the opposite side of an extensive pond; it does not declare the actual contaminated spot permissible in every condition.
If impurity or its effect is present at the point of use, that point is assessed accordingly. The distant side is distinguished because impurity is not apparently reaching it.
The place where contamination entered and the place where water is drawn are different legal considerations.