Swimming pools add lots of fun to your backyard, but they also pose plumbing risks that homeowners overlook. While you keep the water clean, maintain proper chlorination, and even clean the tiles, the plumbing lines running under your concrete pool deck take a lot of wear and tear.
If your pool plumbing breaks, it can ruin your yard, cost you a lot of money, and upset your property. To keep your investment safe, it’s important to understand why these underground plumbing problems occur, what can happen if you ignore them, and how to repair them using modern methods like copper repiping.
Why Underground Pool Plumbing Fails
Pool plumbing systems handle constant water pressure, harsh chemical treatments, and extreme environmental shifts year-round. Over time, several specific factors cause these buried lines to break down:
- Shifting Soil and Ground Settling: Pools are massive, heavy structures set deep into the earth. When the surrounding soil expands from heavy seasonal rain or shrinks dramatically during dry spells, the ground moves. This shifting puts heavy mechanical pressure on underground PVC or metal pipes until a joint snaps or a line cracks.
- Aggressive Pool Chemicals: If chlorine, salt, or pH levels fall out of balance, highly corrosive water flows through your underground lines. This harsh water eats away at metal components, brass valves, and fittings from the inside out, creating premature pinhole leaks.
- Freeze-Thaw Ground Movement: In cold areas, ice forms as groundwater expands, causing heavy pressure on shallow-pool pipes that can damage them before swimming season begins.
- Deterioration of Old Materials: Older properties often have old metal pipes that can easily crack or break from normal water pressure.
What Are the Common Physical Damages Caused by Underground Pool Leaks?
A problem with the underground piping system can be worse than just having dripping taps. The following are some common physical damages that arise from leaking pipes under the ground surface:
- Sunken Patios and Sinkholes: If water keeps seeping into your concrete pool area, it will cause the packed soil underneath to erode. This causes the concrete to sink and crack, creating trip hazards and massive sinkholes within your swimming pool area.
- Shifting Pool Shells and Cracked Tiles: Continuous water erosion under the pool washes away the soil that supports the heavy pool shell. This causes the pool to settle unevenly, creates cracks in the pool tiles, and leads to costly damage to the pool’s main structure.
- Rusting Metal Parts and Leaking Metal Pipes: The chemical imbalance in the soil makes metal parts rust over a period of time. This will develop holes in the pipe through which the water leaks continuously into the ground.
- Burnt-Out Pool Pump Motors: If there is a crack in the underground suction pipe, then your pool pump will fail to suck up water from the pool but instead take in air. Running an empty pump will overheat the motor and cause it to burn out, leading to an expensive replacement in the future.
Why You Should Not Ignore Underground Pool Leaks
Leaving underground plumbing problems unfixed triggers a domino effect of serious financial and day-to-day hassles for homeowners:
- It causes massive water waste and high bills: A hidden leak under the ground can quietly drain thousands of gallons of clean pool water into the dirt every week, causing your monthly water bill to jump up unexpectedly.
- Constant Algae Growth and Chemical Drain: Because you are constantly losing water, you have to keep refilling the pool with fresh tap water. This dilutes your expensive pool chemicals, throws off the water balance, and leads to stubborn, hard-to-clear algae blooms.
- It damages Your Lawns and Yards: Digging up your yard to find and fix a broken underground pipe ruins your grass, destroys your landscaping, and leaves you with expensive yard repairs after the plumbing is finally fixed.
How to Detect Underground Pool Leaks Early
Catching a plumbing failure before it ruins your yard and foundation requires knowing what warning signs to look for:
- Unexplained Water Loss: If your pool loses more water than normal through daily evaporation—more than a quarter-inch per day—there is a leak in the shell or the underground plumbing network.
- Soggy Spots Around the Yard: If you notice patches of grass or dirt near your pool that stay permanently soggy, muddy, or greener than the rest of the lawn even when it has not rained, water is escaping from a buried pipe.
- Air Bubbles in the Return Jets: If you see air bubbles spitting out of your pool return jets when the pump turns on, air is entering a cracked suction line underground.
How to Fix Underground Pool Leaks Permanently
Fixing underground pool problems requires professional repair methods and durable materials rather than quick, temporary surface patches:
- Electronic Pressure Testing: Professional plumbers cap off specific pool lines and attach precision pressure gauges to test each section. This process helps them accurately find and isolate exactly which pipe is losing water.
- Acoustic Listening Equipment: Technicians use specialized ground microphones to listen for the exact sound of water hissing underground. This advanced tool allows them to pinpoint the exact location of the break without having to tear up your entire patio or deck.
- Strategic Equipment Upgrades: For older equipment pads dealing with widespread pipe decay, upgrading sections with durable materials or utilizing copper repiping for exposed equipment manifolds ensures your system holds up against heavy chemical wear. In many cases, professional contractors perform copper repiping on above-ground pump connections to stop chronic leaks and secure a long-lasting fix. Furthermore, utilizing trenchless spot repairs for underground lines allows professionals to fix the broken pipe internally without excavating your entire pool deck.
Conclusion
Ignoring underground plumbing problems around your swimming pool leads to ruined yards, burned-out pool pumps, and expensive structural damage that can ruin your summer. By watching out for early warning signs like high water bills and soggy lawns, and calling in professionals to test your lines, you can catch leaks before they get out of hand. Taking early action and using proper copper repiping methods safeguards your property and protects your wallet, ensuring your pool stays ready for years of enjoyment.