Losing water through main drain

[jsstanton140]

I'm having an issue losing water through the main drain of my inground pool. We do have an ST1056 hydrostatic valve. So the issue could be the pool plumbing or a bad valve. Over the winter we lost about 80-90% of the water (30k gallon pool, there's still about 2.5-3ft of water in the deep end), but not all of it. What is the best way to tell if it's the plumbing or the valve?

Am I going to have to have a pool company come out here and pressure test that line?

Thanks in advance for any feedback!

 

[Texas Splash]

What is the best way to tell if it's the plumbing or the valve?

Carefully, without trying to cause to much movement, squirt some food coloring near the HSV and drain line openings. You should see it pull outwards to indicate where the leak is coming from. Keep in mind if the dye goes out the drain line itself, it could be near the fitting or anywhere in the line, so you might have to plug it for now until you can get a pro to come by and check it out for sure.

Hopefully you can get this confirmed quickly. You don't want to leave the shell that of water too long.

 

[1poolman1]

I'm having an issue losing water through the main drain of my inground pool. We do have an ST1056 hydrostatic valve. So the issue could be the pool plumbing or a bad valve. Over the winter we lost about 80-90% of the water (30k gallon pool, there's still about 2.5-3ft of water in the deep end), but not all of it. What is the best way to tell if it's the plumbing or the valve?

Am I going to have to have a pool company come out here and pressure test that line?

Thanks in advance for any feedback!

Best way for that type of problem is to hire a leak detection company. Not only can they find the problem, most can usually fix it as well and give a warranty on their work.

 

[jsstanton140]

Carefully, without trying to cause to much movement, squirt some food coloring near the HSV and drain line openings. You should see it pull outwards to indicate where the leak is coming from. Keep in mind if the dye goes out the drain line itself, it could be near the fitting or anywhere in the line, so you might have to plug it for now until you can get a pro to come by and check it out for sure.

Hopefully you can get this confirmed quickly. You don't want to leave the shell that of water too long.

I'll give it a shot, but it SEEMS like the water level has reached equilibrium where it isn't losing more water.

 

[jsstanton140]

Best way for that type of problem is to hire a leak detection company. Not only can they find the problem, most can usually fix it as well and give a warranty on their work.

i might have to. was hoping it was the HSV bc that I can easily check/fix easily.