If your inground pool’s plumbing is leaking, corroded, or just outdated, you’re likely asking: “What’s the estimated cost for replacing all my plumbing on inground pool?” You’re not alone. Many homeowners face this daunting question—and the stakes are high. A full plumbing overhaul can save you from recurring leaks and skyrocketing water bills, but it’s also a significant investment. In this guide, we’ll break down real-world costs, key variables, and expert insights so you can make an informed decision—without the guesswork.
What Exactly Does “Replacing All Pool Plumbing” Include?
Before diving into numbers, it’s crucial to understand what a full plumbing replacement entails. Most inground pools rely on a network of pipes that connect the skimmer, main drain, pump, filter, heater (if applicable), and return jets. Over time, these pipes—often made of PVC or older materials like galvanized steel—can crack, clog, or deteriorate due to chemical exposure, ground shifting, or age.
A complete plumbing replacement typically includes:
- Excavation to access buried lines
- Removal of old pipes
- Installation of new Schedule 40 PVC piping (industry standard)
- Reconnection to pool equipment
- Pressure testing and leak verification
- Backfilling and basic site restoration
💡 Note: Some contractors may exclude landscaping restoration or concrete deck repairs—always clarify scope upfront.
What’s the Average Estimated Cost for Replacing All My Plumbing on Inground Pool?
According to data from HomeAdvisor and Angi (2025), the national average cost to replace all plumbing on an inground pool ranges from $5,000 to $15,000. However, this wide range reflects several critical variables:
| Factor | Low End | High End |
|---|---|---|
| Pool Size | Small (12×24 ft) | Large (20×40 ft+) |
| Pipe Material | Standard PVC | Specialty corrosion-resistant |
| Accessibility | Easy (shallow lines, open yard) | Difficult (under patio, near foundation) |
| Labor Rates | Rural areas ($60/hr) | Urban areas ($120+/hr) |
| Permits & Inspections | Not required | Required ($200–$600) |
In extreme cases—such as pools with complex multi-zone systems or those requiring structural demolition—costs can exceed $20,000.
📌 Real-World Example: A homeowner in Phoenix, AZ, paid $12,300 in 2024 to replace plumbing on a 16×32 ft gunite pool after persistent air leaks were traced to collapsed underground lines. The job included trenching through a stamped concrete deck and regrading the backyard.
What Factors Influence the Total Cost?
1. Type of Pool Construction
- Vinyl liner pools: Easier to access plumbing; often lower labor costs.
- Fiberglass pools: Pre-molded shells may limit pipe routing options.
- Concrete/gunite pools: Most common for full replumb jobs; plumbing is embedded in the deck or ground, requiring more excavation.
2. Depth and Layout of Pipes
Pipes buried deeper than 3 feet require heavy equipment and increase labor time. Complex layouts with multiple returns or spa integration add to material and installation complexity.
3. Local Labor and Permit Costs
Labor rates vary widely. For example:
- Texas: $70–$90/hour
- California: $100–$140/hour
Always verify if your contractor includes permit fees—some municipalities require plumbing inspections for safety compliance (source: Wikipedia – Building codes in the United States).
4. Extent of Damage
If only one line is failing, a partial repair might suffice ($1,500–$4,000). But if multiple lines are compromised—or if you’re upgrading to modern standards—a full replacement is often more cost-effective long-term.
Step-by-Step: What to Expect During a Full Plumbing Replacement
- Inspection & Diagnosis
A licensed pool technician uses pressure testing and camera scopes to confirm which lines need replacement. - Permit Application (if required)
Submit plans to your local building department. Processing takes 3–10 business days. - Site Preparation
Mark utility lines (call 811 in the U.S.), remove patio sections or landscaping as needed. - Excavation
Use mini-excavators to dig trenches (typically 2–4 ft deep). Debris is hauled away. - Pipe Installation
New 2-inch Schedule 40 PVC pipes are glued and pressure-tested at 30–50 PSI for 24 hours to ensure no leaks. - Backfill & Restoration
Soil is compacted in layers. Basic grading is included; full landscape rehab may cost extra. - Final Inspection & Startup
Local inspector approves work. System is refilled and tested for flow balance.
⏱️ Timeline: Most full replumb projects take 5–10 days, weather permitting.
Pros vs. Cons of Full Plumbing Replacement
| Pros | Cons |
|---|---|
| ✅ Eliminates chronic leaks | ❌ High upfront cost |
| ✅ Improves water circulation & efficiency | ❌ Temporary yard disruption |
| ✅ Increases property value | ❌ May require additional repairs (e.g., deck) |
| ✅ Prevents future emergency repairs | ❌ Not always covered by insurance |
If your pool is over 15 years old and you’ve had multiple plumbing issues, replacement is often smarter than repeated patching.
How to Save Money Without Sacrificing Quality
- Get 3+ Quotes: Compare line-item estimates—not just totals.
- Bundle Services: Combine plumbing work with equipment upgrades (e.g., new pump) for potential discounts.
- Schedule Off-Season: Contractors may offer 10–15% off during fall/winter.
- DIY Prep Work: Clear the area yourself to reduce labor hours (but never attempt pipe installation without certification).
FAQ Section
Q1: Can I replace pool plumbing myself to save money?
A: Technically possible, but not recommended. Underground plumbing requires precise slope, pressure ratings, and code compliance. Mistakes can lead to catastrophic leaks or failed inspections. Plus, most warranties are void without licensed installation.
Q2: How long does new pool plumbing last?
A: Properly installed PVC plumbing lasts 20–30 years. Avoid using flexible PVC or non-pool-rated materials—they degrade faster under UV and chemical exposure.
Q3: Will homeowners insurance cover plumbing replacement?
A: Usually no, unless damage results from a covered peril (e.g., sudden ground collapse). Normal wear and tear is excluded. Check your policy or ask your agent.
Q4: What are signs I need a full replumb?
A: Watch for:
- Persistent air in the system
- Unexplained water loss (>2 inches/week)
- Low water pressure at returns
- Frequent pump priming issues
- Visible cracks or wet spots in the yard
Q5: Is copper or PVC better for pool plumbing?
A: PVC is standard—it’s corrosion-resistant, cost-effective, and code-approved. Copper is rarely used today due to chlorine-induced pitting and higher cost.
Q6: Do I need to drain the pool for plumbing replacement?
A: Yes, typically. The pool must be empty to disconnect and reconnect plumbing at the skimmer and main drain. Refilling adds ~$100–$300 to your water bill.
Conclusion
Understanding the estimated cost for replacing all my plumbing on inground pool empowers you to avoid costly surprises and protect your investment. While prices vary, most homeowners spend between $5,000 and $15,000 for a complete, professional replumb—with decades of reliable performance as the payoff.
If you found this guide helpful, share it with a fellow pool owner on Facebook, Pinterest, or Nextdoor! And don’t forget to consult a licensed pool contractor for a personalized quote—your oasis deserves expert care.
Stay leak-free, swim happy! 💧🏊♂️
Leave a Reply