Every pool builder or contractor has heard it—or said it—at some point:
“But it passed inspection.”

Those words often come up in courtrooms, after a project has gone sideways and litigation is underway. It’s a phrase meant to shift blame, to suggest that because an inspector signed off, everything must have been done correctly. Unfortunately, that’s not how the law works.

Passing inspection does not equal being code-compliant. And when problems arise, it’s the builder or designer, not the inspector, who carries the legal and financial responsibility for non-compliance. Understanding how building standards are adopted, enforced, and referenced is critical for every professional in the pool and spa industry.

Understanding How Standards Become Law

Most contractors know that building codes exist, but fewer understand how those codes are structured. Many of the technical details that govern your work are not printed in the state building code itself. Instead, they’re part of what’s known as “adopted by reference”—external standards that are legally binding even though they aren’t printed word for word in the codebook.

For example, the International Code Council’s International Swimming Pool and Spa Code (ICC-ISPSC) is one of the most widely adopted pool construction standards in the country. Many states have formally adopted the ISPSC by reference through their residential or building code appendices. That means that even though you won’t find every detail of the ISPSC spelled out in the printed state code, it carries the full weight of law.

How “Adopted by Reference” Works

When you look at your state’s residential building code, you’ll often find an appendix titled “Referenced Standards.” This section lists all of the national and international standards the state has chosen to adopt for that code cycle.

Most of the larger, more populous states are on a three-year code revision cycle, staying current with the ICC and IAPMO (International Association of Plumbing and Mechanical Officials) updates. Smaller states tend to move on longer cycles, sometimes adopting every six or nine years.

Instead of reprinting the full ISPSC document, the state code typically includes a short statement that ties the local law directly to that standard.

For example:

•. In the 2015 Texas Residential Code, section 326.1 states: “The design and construction of pools and spas shall comply with the International Swimming Pool and Spa Code.”

•. The 2018 Tennessee Residential Building Code uses nearly identical language in its own section 326.1.

This simple line means that the entire ISPSC—every clause, every diagram, every standard—becomes part of that state’s enforceable building law.

What’s Inside the ISPSC?

When a standard is adopted by reference, you’re bound to comply with all of it. That includes requirements for:

•. Water circulation rates and line velocities
•. Floor contours, slope transitions, and steps
•. Handholds and ladder spacing
•. Anti-entrapment and anti-drowning features
•. Safety barriers, fencing, and alarms
•. Structural load and shell integrity
•. Equipment placement, bonding, and electrical standards

In short, “adopted by reference” brings the entire ISPSC—and all of its subsections—into play for every new pool or spa construction project in that jurisdiction.

When Local Jurisdictions Modify the Code

Local municipalities do have some authority to modify state codes, but they can’t do it informally. To avoid enforcing specific portions of the state building code, a local government must pass a formal resolution listing every section of the state code that they are choosing not to adopt.

This is rare, but it happens. For example, California and Florida both have their own pool-specific codes that go beyond the ISPSC. These state-level codes are considered more stringent than the ICC’s model code, so they don’t need to reference it directly.

However, for the vast majority of states, the ISPSC—or another comparable standard—is part of the law by reference.

Inspectors Are Not the Final Authority

Here’s where many builders get tripped up: local inspectors do not routinely read or study the building codes in full detail.

Most inspectors rely on experience and precedent. It’s not until they review a set of plans that cites a specific code section or standard that they realize a particular provision applies. That’s why a project can “pass inspection” even though it’s not fully compliant with the adopted standards.

In these situations, ignorance of the code is not a defense—for the inspector or the builder. But while inspectors are largely protected by sovereign immunity, meaning they can’t be sued for missing violations, builders and designers are not.

If a defect later leads to injury or property damage, the responsibility lands squarely on the contractor or design professional. Courts have consistently ruled that “passing inspection” does not exempt a builder from liability if the work fails to meet applicable codes and standards.

The Legal and Financial Reality

In personal injury or construction defect litigation, one of the first questions attorneys ask is: “Was the work code-compliant?”

If the answer is no, it doesn’t matter that the project was approved by a local inspector. The standard of care in these cases is what the law requires, not what the inspector accepted.

Builders and designers are legally responsible for:

•. Knowing which codes apply in their jurisdiction
•. Keeping current with code updates and revisions
•. Ensuring that all referenced standards are followed
•. Documenting compliance throughout the project

Failing to do so can expose contractors to claims of negligence, breach of contract, or professional misconduct, even years after the project is complete.

“It Passed Inspection” Is Not a Defense

The concept of sovereign immunity exists to protect public officials, including building inspectors, from lawsuits when they make honest mistakes. That protection does not extend to private builders.

In the eyes of the law, you’re the expert. You’re expected to know the applicable codes and standards. When a violation exists, you can’t rely on an inspector’s oversight as a shield.

Saying, “But it passed inspection,” is equivalent to admitting you didn’t understand your own obligations under the law.

Staying Ahead of the Curve

So, where should builders go to stay informed? The most accessible resource is UpCodes, an online library that provides searchable access to state-specific building codes and referenced standards.

UpCodes makes it easy to:

•. Search your state’s adopted code cycles
•. Review appendices for referenced standards
•. Track amendments or local modifications
•. Stay up to date on pending revisions

It’s also a good practice to maintain a copy of the current ICC-ISPSC or your state’s equivalent pool code in your office or jobsite trailer. Regularly reviewing it with your design and field teams helps prevent costly oversights.

A Builder’s Responsibility

Complying with building codes and referenced standards isn’t about passing inspections—it’s about protecting lives, property, and your professional reputation.

Builders who study their codes, document compliance, and communicate clearly with inspectors and clients show the kind of professionalism that defines true craftsmanship.

Codes aren’t arbitrary red tape; they’re the accumulation of decades of engineering, safety research, and field experience. When you follow them—not just the parts you know, but the full scope of what’s adopted by reference—you’re doing more than meeting legal requirements. You’re building with integrity.

Final Thoughts on the Subject

The next time you hear someone say, “But it passed inspection,” remember this: inspections are a checkpoint, not a certification of compliance. The responsibility—and the liability—always comes back to the builder.

Do your homework, know your state’s adopted standards, and make compliance a cornerstone of every project. It’s not just good business—it’s the law.

When it comes to building a swimming pool, what happens below the surface is just as important as what’s visible above it. In areas with unstable, expansive, or soft soils—or on sloped lots—standard foundations simply won’t cut it. That’s where deepened foundation systems come into play. These structural supports, often hidden underground, are crucial for ensuring the long-term stability and safety of a pool. Depending on site conditions and engineering requirements, contractors may rely on a variety of pier types—each with its own strengths and limitations. In this article, we explore the most common deep foundation options used in pool construction: friction caissons, driven piles, helical piers, and end-bearing caissons.

Deepened Foundations in Pool Construction: Caissons, Piles, and Piers Explained

Friction Piers/Caissons

Friction caissons are drilled holes, filled with reinforcing steel and concrete. The engineer calculates the friction between the earth and the outer surface of the concrete. These rely upon the surface area of the outside of the caissons and the coefficient of friction of the soil for support. Therefore, their diameter and depth are designed to develop sufficient surface area and soil friction. If the earth is removed they lose their ability to support the structure.

Driven Piles

Driven piles work in much the same way as friction caissons, except that they are pounded into the ground. Precast concrete, wood or steel I-beam piles are driven into the ground by a pile driver to the point of refusal. They are not often used in residential construction, due to the noise and ground vibration they cause.

The vibrations can actually damage nearby structures. They also require large machinery that often cannot access residential lots. Driven piles can be “end bearing,” friction or a combination of both. They are most often used in swimming pools adjacent to water (lake front, beach front, swamp land), that have soft or incompetent soils.

Helical Piers

Helical Piers are giant soil “screws” that are drilled into the soil. They have significant limitations, due to their size and method of installation. Helical piers are limited in their load bearing capacity to the torque that the installation machinery can deliver. Helical piers also do not perform well in loose or soft soils. Their development depth is limited by the length of the shaft.

For pools, helical piers are most often used in areas of expansive soils or high water tables to hold down the structure. They are the most economical and weakest of the available options. To resist point loading on the tip of the shaft, grade beams or mat foundations are often utilized to spread the load across the underside of the pool floor.

End-bearing caissons

As the name implies, end-bearing caissons (seen above – Featured Image) are drilled or driven until the end of the pile contacts supporting bedrock or soils. They often develop support through a combination of skin friction and end load bearing. Bell caissons, flare out on the bottom to increase the contact footprint of the shaft. They require specialized augers to create the flared end.

The portion of a pier above grade is a “free standing” pier (aka: column). The tops of the columns are tied together by beams or a mat foundation to resist movement. They are often seen on bridges, overpasses and above grade swimming pools.

You can see why a soils report is required for pier supported structures. Without a soils report, the structural engineer will not know the soil’s coefficient of friction, it’s load bearing capacity or the expansion index for their design.

Conclusion

When it comes to pool construction, building a structurally sound pool on challenging terrain requires more than just a good understanding of design—it demands a deep understanding of soil behavior and the right foundation system to match. Whether it’s friction caissons, driven piles, helical piers, or end-bearing caissons, each solution serves a specific purpose based on site conditions and load requirements. Because these systems involve critical calculations and specialized installation methods, they’re never a DIY task. A thorough soils report and the expertise of a qualified structural engineer are essential. For pool contractors working in uncertain ground conditions, relying on professional guidance isn’t just smart—it’s a matter of long-term safety and liability.

Photo Credits: Swimming Pool Expert Witness

When it comes to swimming pools, a “Lifetime Warranty” is only as good as the company behind it. Let’s face it, most warranties are part of a pool company’s marketing program, used to entice consumers with a guarantee as to the quality of their prospective purchase. Before a purchase, the warranty says “our product is SO GOOD, we guarantee it for life”, but how good is that pool warranty, really?

Warranties usually are not financially backed by an insurance policy or surety bond. Warranties are supported by the good will and financial solvency of the business that provides them.

Many consumers are confused by this. Some expect general liability insurance companies to provide a blanket lifetime warranty, if the company goes out of business. This often leads to consumer disappointment.

The Difference Between a Warranty & Insurance

There is a significant difference between warranties and insurance coverage. One is a self-funded program by the company, while the other is backed by the investments of an insurance company.

Warranty coverages end when the company ceases operations. Insurance coverages typically extend beyond the company’s operations.

Only companies that purchase insurance coverage or partner with a third-party warranty company to cover their warranty liabilities, will have warranty coverage after they cease operations. Such policies and services are expensive and rarely used throughout the pool industry.

Ways Pool Professionals Can Improve Warranty Coverage

To offer better warranties to their customers, pool professionals should enhance transparency and communication. Providing clear, detailed documentation outlining what the warranty covers, including any exclusions or limitations, is crucial. Educating customers about the terms of the warranty and the distinction between warranties and insurance through informational sessions or brochures can further clarify these aspects.

Supporting Customers After The Sale

Implementing a robust after-sales support system is another essential step. Establishing a responsive customer service team dedicated to handling warranty claims and inquiries ensures timely and effective resolution of any issues. Offering maintenance services helps customers keep their pools in optimal condition, preventing issues and reducing warranty claims. Providing comprehensive warranty coverage that includes a broad range of potential issues, such as structural defects, equipment malfunctions, and surface problems, can further enhance customer confidence. Allowing warranties to be transferable if the property is sold adds value to the customer’s investment and facilitates the sale of their home.

Plan For The Long Term

Partnering with reputable third-party warranty companies can provide financial backing, reassuring customers that their warranty will remain valid even if the pool company ceases operations. This partnership can also offer extended warranty options, allowing customers to choose additional protection based on their needs and budget.

Finally, monitoring and improving financial stability through regular audits and considering insurance policies that cover warranty liabilities provide additional layers of security for customers. Fostering customer relationships through regular check-ins and implementing feedback mechanisms helps build long-term relationships and ensures customer satisfaction. By implementing these strategies, pool professionals can offer better, more reliable warranties to their customers, enhancing trust and satisfaction while strengthening their reputation and credibility.

Important Questions To Ask About Your Warranty

This article is equal parts education for pool professionals and consumers. Below are just a few of the most important questions that consumers need to ask their pool professional when it comes to their swimming pool warranty.

Research the Company’s Stability:

Example Question: “How long has your company been in business, and can you provide references or testimonials from past clients?”

Understand the Warranty Terms:

Example Question: “What exactly does the lifetime warranty cover? Are there any exclusions or limitations?”

Clarify the Financial Backing:

Example Question: “Is the warranty backed by an insurance policy or a surety bond?”

Example Question: “What happens to the warranty if your company goes out of business?”

Differentiate Between Warranty and Insurance:

Question: “Can you explain the difference between your warranty and what is covered under any insurance coverage you might offer?”

Question: “Are there any third-party warranty companies you partner with to ensure coverage if your company ceases operations?”

Inquire About After-Sales Support:

Question: “What kind of support and service do you provide after the sale and installation of the pool?”

Question: “How quickly can I expect service if there is an issue covered by the warranty?”

Review Documentation:

Question: “Can I have a copy of the warranty terms and conditions to review before making a purchase?”

Question: “Are there any steps I need to take to ensure the warranty remains valid?”

Ask About Maintenance Requirements:

Question: “Are there specific maintenance requirements I need to follow to keep the warranty valid?”

Question: “Can you provide a recommended maintenance schedule and any services you offer to help maintain the pool?”

Navigating the intricacies of pool warranties can be daunting for consumers, but with thorough research and the right questions, it’s possible to make a confident and informed decision. By fostering clear communication and providing reliable information, both consumers and pool professionals can create a positive experience that extends far beyond the initial purchase. Remember, a warranty is only as good as the company behind it.