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Plumbing

Key Plumbing Points for Home Inspections

Written by
Jeff Efird
April 9, 2025
Plumbing technician makes notes on a clipboard while inspecting pipes under a sink.

Introduction to Plumbing in Inspections

Plumbing systems are a fundamental part of any home, directly affecting both comfort and daily living. Efficient plumbing ensures that clean water is available for drinking, cooking, and cleaning, and that waste is properly removed from the home. During home inspections, plumbing is a focal point because undetected issues can lead to severe damage and costly repairs.

One aspect that makes plumbing so important in home inspections is the interconnected nature of its components. A problem in one area, such as a minor leak, can quickly spread and cause issues in other parts of the system. Additionally, plumbing issues are not always immediately visible. Problems can develop behind walls, under floors, or in the yard, making it essential for a thorough inspection to identify hidden concerns.

Inspectors look at various elements during the process, including fixtures, pipes, and drainage systems. They assess the functionality and condition of sinks, showers, bathtubs, and toilets, making sure they operate correctly without leaks. Inspectors also check for signs of water damage or mold, which can indicate underlying plumbing issues.

The longevity of the plumbing system can also be influenced by the quality of installation and materials used. Older homes, in particular, may have outdated plumbing systems that do not meet current standards and could require upgrades. Inspectors will also evaluate water pressure, as it can be a telltale sign of underlying issues such as blockages or leaks.

Understanding the intricacies of a home’s plumbing system during an inspection can provide valuable insights for both buyers and sellers. Identifying and addressing issues early on can prevent small problems from escalating into significant, more expensive repairs.

Common Plumbing Issues

Plumbing issues are a concern for homeowners and can range from minor annoyances to major problems. Two of the most frequently encountered issues during home inspections are leaky faucets and pipes, as well as clogged drains and toilets. Leaky faucets might seem trivial, but they can waste a significant amount of water over time and lead to higher utility bills. Leaking pipes, on the other hand, can cause water damage to walls and floors, resulting in expensive repairs. Clogged drains and toilets not only disrupt daily routines but can also be indicative of more serious blockages in the plumbing system that need immediate attention.

Leaky faucets are often caused by worn-out washers or seals, which can be easily replaced. However, if left unaddressed, they can lead to more significant water damage and mold growth. Leaking pipes can be more problematic, as they are often hidden behind walls or under floors, making them harder to detect. Common signs of leaking pipes include water stains, a musty odor, and an unexplained increase in water bills.

Clogged drains and toilets are usually caused by the buildup of hair, grease, soap scum, or foreign objects. These blockages can lead to slow drainage, unpleasant odors, and even sewage backups. While minor clogs can often be cleared with a plunger or drain cleaner, more severe blockages may require professional intervention. Ignoring these issues can result in significant damage to the plumbing system and potentially costly repairs.

Inspecting Water Heaters

When examining water heaters during a home inspection, there are several key areas to focus on. Inspect for any visible signs of rust, as this can be a precursor to leaks and indicates possible corrosion. Sediment buildup, which commonly occurs in areas with hard water, can impair the efficiency of the heater and increase energy consumption. To check for sediment, look for popping or rumbling sounds when the heater is operating, as these noises often indicate sediment at the bottom of the tank.

Assessing the temperature settings on the water heater is also essential. The thermostat should be set within a safe range, typically between 120°F and 140°F, to ensure the household has enough hot water without posing burn risks. High temperatures not only increase the risk of scalding but can also accelerate the wear on the heater, potentially leading to a shorter lifespan.

Another crucial aspect is the condition of the pressure relief valve, which is a safety feature designed to release pressure if the tank becomes over-pressurized. Ensure the valve is not corroded and functions properly. Finally, inspect the anode rod, which helps prevent corrosion inside the tank. If the rod is significantly corroded, it should be replaced to extend the life of the water heater.

Regular inspections of these components can help identify potential issues before they escalate into more serious problems.

Sewer and Septic Systems

Inspecting sewer and septic systems during a home assessment is crucial for identifying potential problems. Key indicators of sewer line issues include slow drains, bad odors, or visible sewage backups. Such signs often point to blockages or breaks in the sewer line, necessitating prompt professional intervention. For homes with septic systems, regular maintenance is vital to prevent failures. This includes routine pumping of the septic tank and avoiding the disposal of non-biodegradable waste, which can clog the system. Inspectors often use cameras to check the condition of sewer lines, enabling them to detect cracks, tree root intrusions, and other damage that might not be visible otherwise. Identifying these issues early can save homeowners from costly repairs and health hazards.

Pipes and Water Pressure

Pipes and water pressure are crucial aspects of any plumbing system, affecting both functionality and longevity. Various materials are commonly used for pipes, including copper, PVC, and PEX. Copper pipes are durable and resistant to corrosion but can be expensive. PVC pipes are cost-effective and easy to install, while PEX pipes are flexible and resistant to scale and chlorine. During an inspection, it’s important to check these pipes for signs of wear, leaks, or damage. Corrosion can be a particular concern with older copper pipes, potentially leading to leaks and water damage.

Water pressure is another critical factor in a home’s plumbing system. Low water pressure can be a sign of leaks, clogs, or issues with the municipal water supply. It can also indicate problems like mineral buildup in pipes, which restricts water flow. Conversely, high water pressure can be just as problematic, potentially damaging pipes, fixtures, and appliances. It can also lead to more frequent leaks and bursts, which can be costly to repair.

Inspectors often measure water pressure to ensure it falls within the recommended range, typically between 40 and 60 psi. If the pressure is outside this range, it may indicate underlying issues that need to be addressed. Installing a pressure regulator can help manage high water pressure and protect the plumbing system from damage. Regular checks and maintenance can help ensure that both pipes and water pressure remain in good condition, preventing future issues.

Preventive Measures

Preventive maintenance is essential for avoiding costly plumbing issues down the line. Homeowners should regularly inspect their plumbing systems for visible signs of wear or damage, such as water stains, rust, or unusual odors. This includes checking under sinks and around appliances for leaks. Ensure all drains are clear and free of debris to prevent blockages that can lead to more severe problems.

Routine maintenance of water heaters is also important. Flushing the tank annually can remove sediment buildup, which helps maintain efficiency and prolongs the unit’s lifespan. Homeowners should also periodically test the pressure relief valve to make sure it’s functioning correctly.

Installing water softeners can be beneficial in areas with hard water, as they help reduce mineral buildup in pipes and fixtures. Additionally, using strainers in sinks and tubs can catch hair and other debris, preventing clogs.

Outdoor maintenance should not be overlooked. Inspect garden hoses, outdoor faucets, and irrigation systems for leaks or damage, particularly before winter, to prevent freezing and bursting. It’s also wise to know the location of the main water shut-off valve and ensure it’s accessible in case of emergencies.

Homeowners should keep an eye on water pressure levels, using pressure gauges to monitor for any fluctuations that might indicate underlying issues. Regularly updating older plumbing systems can also help prevent failures and maintain overall home safety.

Conclusion and Recommendations

Effective plumbing inspections are essential for identifying issues that could lead to costly repairs and potential hazards. A well-maintained plumbing system ensures a safe and comfortable living environment. Homeowners should prioritize regular inspections and upkeep, focusing on areas prone to leaks, clogs, and other common problems. Proper maintenance of water heaters, sewer and septic systems, and the monitoring of water pressure can significantly extend the life of a plumbing system. For buyers, a detailed plumbing inspection can offer valuable insights into a property’s condition, while sellers can use the inspection to address any problems before putting their home on the market. By staying proactive, homeowners can prevent minor issues from turning into major concerns. Regular check-ups and timely repairs are key to maintaining an efficient and reliable plumbing system. Prime Plumbing & Drains advises ongoing vigilance and professional inspections to keep plumbing systems in optimal condition.

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Reviews from Our Valued Clients


  • icon of 5-stars

    Fantastic customer service! They serviced my mom’s residence in Mooresville and did a phenomenal job. They thoroughly inspected all the pipes, including the sinks and toilets and cleared numerous clogs which improved the water pressure. They also checked her well to reassure her that everything worked properly . It’s very reassuring to know there are still kind and honest companies who you can trust to take care of your family.
    Amy Griffin
  • icon of 5-stars

    Prime Plumbing has been a blessing to us they are very knowledgeable in all areas of plumbing we called them when our water was coming out dirty and they were able to solve the problem swiftly and I was comfortable with the cost. I have called them since them and they came and was on time and always very courteous and helpful and give good advice.
    Priscilla Ingram
  • icon of 5-stars

    Jeff was honest and open about what it would take to get our sewer pump up and running again. We had a few hiccups along the way but the actual work was quick and efficient. Highly recommend for plumbing issues.
    Paige Wright
  • icon of 5-stars

    Wow I’ve worked with a few plumbers in the area and must say that Bill with Prime Plumbing knows his stuff. Had a pipe burst under the house. They were able to come out same day, and restore hot water. Very impressed! Will be choosing them for any plumbing need i ever have. 5/5 couldn’t recommend more.
    Nathan Rose
  • icon of 5-stars

    The two plumbers arrived on time and quickly solved our p trap problem. Very pleased with their professionalism, service, and that they explained how to better maintain our drain line. I highly recommend this company.
    Rod Wade
  • icon of 5-stars

    Bill & Trip did an excellent job. Very prompt, friendly and efficient, and arrived fully equipped with a very impressive pipe exploration camera/auger which they used skillfully, and without which they would have been unable to evaluate our problem. Will keep the phone number handy.
    Ronald Bowers
  • icon of 5-stars

    Fantastic customer service! They serviced my mom’s residence in Mooresville and did a phenomenal job. They thoroughly inspected all the pipes, including the sinks and toilets and cleared numerous clogs which improved the water pressure. They also checked her well to reassure her that everything worked properly . It’s very reassuring to know there are still kind and honest companies who you can trust to take care of your family.
    Amy Griffin
  • icon of 5-stars

    Prime Plumbing has been a blessing to us they are very knowledgeable in all areas of plumbing we called them when our water was coming out dirty and they were able to solve the problem swiftly and I was comfortable with the cost. I have called them since them and they came and was on time and always very courteous and helpful and give good advice.
    Priscilla Ingram
  • icon of 5-stars

    Jeff was honest and open about what it would take to get our sewer pump up and running again. We had a few hiccups along the way but the actual work was quick and efficient. Highly recommend for plumbing issues.
    Paige Wright
  • icon of 5-stars

    Wow I’ve worked with a few plumbers in the area and must say that Bill with Prime Plumbing knows his stuff. Had a pipe burst under the house. They were able to come out same day, and restore hot water. Very impressed! Will be choosing them for any plumbing need i ever have. 5/5 couldn’t recommend more.
    Nathan Rose
  • icon of 5-stars

    The two plumbers arrived on time and quickly solved our p trap problem. Very pleased with their professionalism, service, and that they explained how to better maintain our drain line. I highly recommend this company.
    Rod Wade
  • icon of 5-stars

    Bill & Trip did an excellent job. Very prompt, friendly and efficient, and arrived fully equipped with a very impressive pipe exploration camera/auger which they used skillfully, and without which they would have been unable to evaluate our problem. Will keep the phone number handy.
    Ronald Bowers
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