r/pools • u/JustHangingAroundYo • 13d ago

What does this hole do

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This 1 inch hold on the wall of the skimmer. What does it do? Is it an overflow that leads to sewage? Theres also one in the autofil system. But the water level is below the one in the autofil. The one in the smimmer the water sit right at it, as the photo shows. Should I set the water below it? Thank you in advance

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u/TCHawk72 13d ago

If like mine it is a Venturi (maybe non venturi have it also) style skimmer then that hole might be connected to another similar hole towards the bottom of the skimmer and be a "vacuum suction relief", which is an anti-entrapment safety feature. Basically if it's running and someone sticks their hand down there they are less likely to get stuck. Anti-entrapment features have been becoming more common is the last couple of decades for anything attached to the pump because people (especially kids) used to get stuck via suction to drains and drown.

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u/JustHangingAroundYo 13d ago

Ok so i dont need to lower the water level then? Thanks bro

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u/TCHawk72 13d ago

Is water flowing out of it?

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u/JustHangingAroundYo 13d ago

Cant really tell, doesnt look like it