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Pool leak question

Posted on 9/24/26 at 12:45 pm
Posted by Craigwest
Member since Dec 2024
105 posts
Posted on 9/24/26 at 12:45 pm
Pool started losing water. Turned off pump and water level was still going down around 2” per day. Let it continue to go down until it stopped, which was just below one of the return jets. Filled water up enough to cover the jet and shot dye around it to determine exact spot of leak. Couldn’t locate it and now the pool hasn’t gone back down to the level it was before. Any clue as to why the leak has apparently fixed itself?
Posted by jdavid1
Member since Jan 2014
2706 posts
Posted on 9/24/26 at 1:40 pm to
Pool leaks are tricky so I found out. I have a liner inground pool and it was leaking. There are some pavers lower than the pool and the water was pooling up on the pavers and the pool was losing water. I called my buddy who builds/services pools and he looked at it and told me it would be a good bit to figure it out but would quote me. He said almost all pools leak, but not that bad. After a few days it quit leaking totally. Hasn't leaked in about a year. No explanation as to why.

You're sure it's not evaporating? Have you tried the bucket test?
Posted by Baers Foot
Louisiana Ragin' Cajuns
Member since Dec 2011
3971 posts
Posted on 9/24/26 at 1:47 pm to
Common leaks in-line with return jets could be pool light and skimmer. Also check near pool pump and filter for water accumulation or wet spots.

One year I had a leak that was caused by the gaskets in my pool pump shrinking due to weather and would be fine later in the day when it got hotter. One year had a leak behind pool light. Another leak was due to gasket between skimmer and pool wall.

I don't think you'd have a leak in main drain based on the info you've shared, so I would rule that out.
Posted by UptownJoeBrown
Baton Rouge
Member since Jul 2024
13571 posts
Posted on 9/24/26 at 2:48 pm to
Fiberglass or gunite?
Posted by Craigwest
Member since Dec 2024
105 posts
Posted on 9/24/26 at 3:40 pm to
Sorry, it’s liner. And yeah, it’s definitely more than evaporation.
Posted by windmill
Prairieville, La
Member since Dec 2005
7881 posts
Posted on 9/24/26 at 7:59 pm to
Neither
Posted by billjamin
Houston
Member since Jun 2019
20411 posts
Posted on 9/24/26 at 9:55 pm to
I had a leak and hired a leak detection company. I think it was a big franchised one. Wasn’t as expensive as I thought and they found it around the skimmer. Resealed and it’s been good to go. Think it cost me about $700 total for detection and repair.

ETA is was American Leak Detection and was exactly 700. Just found the email.
This post was edited on 9/24/26 at 9:57 pm
Posted by texn
Pronouns: Y'All/Y'All's
Member since Nov 2019
4140 posts
Posted on 9/28/26 at 9:18 am to
Thanks, Bill. I'm having the same problem as OP and will be giving American a call.
Posted by TopWaterTiger
Lake Charles, LA
Member since May 2006
12743 posts
Posted on 9/28/26 at 7:58 pm to
Yep! I’m losing about 3 inches a week and having to refill weekly

So are you saying if I drain it will fix itself?
Posted by Spankum
The Sip
Member since Jan 2007
64130 posts
Posted on 9/28/26 at 9:52 pm to
quote:

American Leak Detection and was exactly 700. Just found the email.



Totally reccommend American Leak Detection. The dude came to my house and worked for a couple of hours. Recommend a certain plumber to me and didn’t charge me a cent. Top notch company (my branch was) that I will call again if needed.
Posted by Craigwest
Member since Dec 2024
105 posts
Posted on 9/29/26 at 9:47 am to
quote:

So are you saying if I drain it will fix itself?


Haha. Unfortunately it started losing water again when I filled it back up. Found a tear in the liner just below the steps, well below the water line when it stopped going down. I guess as the water went down the pressure stopped it from pushing out of the tear? Next question is do any of the patches work? I’ve tried two that both say work underwater without draining the pool but they don’t fully stick.
Posted by danny d lsu
Baton Rouge, LA
Member since Sep 2007
1605 posts
Posted on 10/1/26 at 3:02 pm to
quote:

Haha. Unfortunately it started losing water again when I filled it back up. Found a tear in the liner just below the steps, well below the water line when it stopped going down. I guess as the water went down the pressure stopped it from pushing out of the tear? Next question is do any of the patches work? I’ve tried two that both say work underwater without draining the pool but they don’t fully stick.


Same thing just happened to me, drastic drop in water level when I got home from work and found a tear in the vinyl right at the steps. The tear was too big to patch so have to drain the pool and replace the entire liner. The liner is only about 7 years old but apparently they only last 7-10 years. We bought the house with the pool already built. Salt cell went out, pump broke, now the liner, this thing is more trouble than its worth sometimes.
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