Jackson pool leak repair: where pools leak and what each fix costs
Most pool leak repairs around Jackson cost $300 to $1,200, because most leaks sit at a return fitting, a light niche, or the skimmer. A buried pipe runs $800 to $2,800 once it has been located. A leaking structural crack runs $400 to $4,500 depending on whether the crack is still moving. The repair is priced after the leak is found, never before.
How much does it cost to fix a pool leak in Jackson, MS?
It depends on where the water is getting out, and there are only about six places it can. The table below matches each leak to the sign you can see from the deck and to the range we publish on our cost guide.
| Where the leak is | What you notice | The fix | Typical range |
|---|---|---|---|
| Return fitting or light niche | Water drops to the returns or the top of the light, then holds | Reseal the fitting or the conduit at the back of the niche, underwater | $300 to $1,200 |
| Skimmer pulled away from the gunite shell | Water stops just under the skimmer mouth, crack line where plastic meets plaster | Cut out and rebuild the joint, or replace the skimmer through the deck | $800 to $2,500 |
| Buried PVC line | Loses more with the pump running, air bubbles at the returns, a soft wet spot in the yard | Locate by sound, dig one small hole, replace the bad joint | $800 to $2,800 |
| Single crack in the shell, not moving | Hairline crack below the waterline that pulls dye | Crack injection | $400 to $900 |
| Structural crack that opens and closes with the seasons | Crack runs through tile and bond beam, wider after a dry August | Carbon staples across the crack, then injection and patch | $1,500 to $4,500 |
| Equipment pad | Drip under the pump, wet filter base, water running out the backwash line | Pump seal, valve gasket, or union | Usually a service call |
Finding the leak is a separate visit at $350 to $650, with half of that credited to the repair if we do it. Every pool is different, so these ranges become a firm number only after the test. Call (769) 210-8684 with what the pool loses per day and we can usually tell you which row you are in.
How could my pool be leaking if the fill line keeps the water level up?
Because the fill line is hiding it. An autofill valve works like the float in a toilet tank. Every time the level drops, it opens and tops the pool off, so a pool losing an inch a day looks full every morning. A homeowner asked us this almost word for word.
The pool tells on itself in other ways:
- The water bill climbs with no change in how you use the house.
- Chemicals will not hold. Salt and stabilizer readings keep sliding down because fresh water keeps diluting them.
- You can hear the fill valve hissing or see it trickling most of the day.
- The ground stays wet beside the deck or the equipment pad in dry weather.
To check, shut the fill line off at its valve for 24 to 48 hours and run a bucket test. Our guide to evaporation versus a real leak walks through it. The loss adds up faster than people expect. A 16 by 32 foot pool that drops one inch a day is losing about 320 gallons a day, close to 9,600 gallons a month. EPA’s WaterSense program puts household leaks nationwide at nearly 1 trillion gallons a year, and a pool on an autofill is one of the quietest ways to add to that.
Where do gunite pools in Jackson leak most often?
At the joints, where two materials meet. A gunite shell is rigid concrete. The skimmer is plastic, the pipes are PVC, and the deck is a separate slab. Around Jackson all of it sits in Yazoo clay, which the Mississippi Department of Environmental Quality’s geology office describes as a clay that swells when wet and shrinks when dry. Each part rides that movement a little differently. In the order we find them:
- Skimmer throat. The deck lifts or settles and takes the skimmer with it, opening the joint against the shell.
- Return fittings. The plaster ring around the fitting cracks loose.
- Light niche. The conduit that carries the light cord out of the niche was never sealed, or the sealant has aged out.
- Underground plumbing. A glued PVC elbow pulls apart under the deck or in the yard.
- Main drain and hydrostatic valve. Less common, and found by dye with a diver or a pole.
- Cracks through the shell. Usually at a step corner, a bench, or where the shallow end breaks to the deep end.
Can I patch a pool leak myself?
Sometimes, for a while. Two part epoxy pool putty pressed into a skimmer throat gap or around a return fitting can slow a leak for a season, and it works underwater. It will not hold on a joint that is still moving, and it does nothing for a buried line. Skip the pour in leak sealers. They can clog a filter and they make the leak harder to find later.
The one thing not to do is drain the pool to look for the leak. An empty gunite shell on wet clay can lift out of the ground, which our article on draining a gunite pool in Jackson explains. Every test and most repairs happen with the pool full.
Should I fix the leak now or wait until the pool is resurfaced?
Fix it now. New plaster is a finish, not a waterproof repair, and it will not seal a leaking fitting, a separated skimmer, or a broken pipe. Water escaping behind the shell also soaks the clay, and swelling clay is what turns a $500 fitting repair into a structural crack. If the pool is due for resurfacing anyway, the leak work goes first, on the same mobilization, so the new finish goes over a shell that holds water.
Who we are not the right call for
A torn vinyl liner needs a liner company. A pump that leaks at the shaft or a filter that drips is a job for your weekly service tech, and it costs far less than a repair crew. Above ground pools and fiberglass shells are a different trade. For a gunite or concrete pool that is losing water anywhere from Madison to Byram, start with pool leak detection, get the findings in writing, and then decide who does the repair.
Pool losing water? Tell us about it
Tell us what the pool loses per day and whether it has a fill line. We’ll call with the likely cause and the range.