What is this hole?


New member
Apr 28, 2018
Athens GA
Sorry for this obscure question but my wife and I bought a house with a pool this past December. We so far have figured out how to take care of an impeller problem, ammonia problem and (hopefully 🤞 ) finishing up SLAM in the next few days/weeks thanks to this site. However, this random threaded hole is a mystery to us. Upon my wife finding a skink crawling out of it, she promptly wants it closed off if it possible. It is in the deep end above the water line and not near a skimmer. It is a bit larger than a return jet hole and it is threaded. It may be an obvious answer and I’m sorry if it is! Thanks for any help!



Mod Squad
TFP Expert
LifeTime Supporter
May 19, 2010
Tucson, AZ
:wave: Welcome to TFP!!!

Given the location, I am going to guess it is an overflow port that will drain water off if it gets too high to a reasonable location, instead of up and behind the liner or all over the deck, etc.