8 common causes of household leaks (and how to prevent them)

Running water and sanitary sewer systems are key household advancements that have improved quality of life. However, if a problem occurs with pipes, drain lines, plumbing fixtures, or any water-using appliance, leaks can develop. Use this guide to learn more about common causes and how to prevent them.

Faulty faucets and toilets

If they don't create rot or water damage, leaks can go completely unnoticed if you aren't paying attention to your water bills.

Fixing a running toilet can be as simple as replacing the flapper. Replacing the washer in the faucet may prevent dripping, but if the water keeps leaking, it's a good idea to invest in a new faucet.

Loose or broken hose connections

If you notice any wet spots or areas in the yard that appear to be sunken down, it can indicate an underground leak. Loose or broken hose and irrigation system connections can cause puddles, soil erosion around the foundation of the home and sink holes if left unresolved.

Locate the leak, then tighten the connection to stop it. If the issue is from a damaged connection, the connector and any other damaged parts of the system will need to be replaced.

Cracked sink or tub

If the body is cracked, water can leak out, causing mold, mildew, and rot. Cracks can occur from frequent use, general wear, impact damage or corrosion.

If you see a crack forming in the bathtub or sink, stop using the damaged item.

Worn out seals

Dishwashers, refrigerators and washing machines frequently use water during regular operation. If the seals or washers become old, worn or misshapen, it can cause leaks. Fixing this problem is easy if you can find a replacement seal.

Clogged drain lines

When a drain line clogs, the water that would usually drain into the sewer or septic system has nowhere to go. Instead, it fills up until it completely backs up, sometimes causing a burst pipe.

Clear a clogged drain with a mixture of baking soda and vinegar, or use a plumber's snake or a drain auger.

Corroded pipes

While most homes now have copper or plastic pipes, galvanized iron and even lead pipes were once the primary options. These substances can contaminate water or degrade pipes over time, leaving the exterior of the pipe as thin as paper.

Repair leaking or damaged copper pipes and replace old galvanized or lead pipes and fittings.

Ruptured water heater

A standard water heater typically lasts about eight to 12 years. However, if there is a significant amount of sediment in the water, it could quicken the tank's corrosion. Even a small leak will cause water to constantly flow out of the tank and into the home.

Make sure to have the water heater regularly inspected and maintained to avoid any surprises. If you spot a leak in the tank, turn off the flow of water to the water heater and contact a professional plumber.

Invasive tree roots

Trees tend to seek out high-moisture areas. A leaking water line can create a high-moisture area in the yard that attracts nearby tree roots.

Over an extended period, tree roots can wrap around or even pierce through the water line, causing a leak in the yard. If you see new wet patches or sinkholes or experience a sudden drop in water pressure, have a plumber check for tree root intrusion.