Cold weather and hard water raise burst risk for DFW water heaters

North Texas homeowners are being warned to check aging water heater tanks before the first winter freeze as colder incoming water and mineral buildup can increase the chance of leaks or burst tanks. A Dallas plumber says routine flushing and early inspections can help reduce flood damage in homes.

Why it matters: - Hard water and freezing temperatures can combine to overload conventional water heater tanks in the Dallas-Fort Worth Metroplex. - Burst tanks can flood utility closets and garages, creating costly home damage and emergency repairs. - Homeowners with older tanks face higher risk as winter weather drives water heaters to work harder.

What happened: - Meteorologists are predicting a stronger El Niño and freezing January temperatures across the DFW Metroplex this winter. - Water reports show cities across North Texas have hard water. - Incoming supply from Dallas Water Utilities and the North Texas Municipal Water District is rich in minerals like calcium. - Mother Modern Plumbing’s Responsible Master Plumber Steven Smith warned that the mix of hard water and falling water temperatures creates a flood risk for residential water heater tanks.

The details: - Smith said calcium in hard water settles at the bottom of the tank over time. - Smith said those minerals crust over the heating elements inside home water heater systems. - When winter arrives, colder incoming city water forces the water heater to run hotter and longer. - Smith said the calcium layer blocks heat and traps intense heat at the bottom of the tank. - Smith said that stress can crack the glass inside the tank and eventually cause the bottom to break open. - Smith said homeowners often hear popping or rumbling sounds from water heaters in November and December. - Smith said an older tank should be checked by reading the manufacturer sticker on the unit. - Smith said tanks 8 to 10 years old or older face a higher risk of bursting during freezing temperatures. - Smith recommended an annual water heater flush to drain loose sediment before winter cold begins. - Smith said homeowners who are not exceptionally handy should schedule a flush with a plumber. - Smith warned that a plastic valve can snap off during a flush and cause a flood.

Between the lines: - The warning is less about one cold snap and more about the combined stress of mineral buildup, aging equipment and colder supply water. - The advice focuses on prevention because burst tank failures can escalate quickly once the tank body gives way. - The message also reflects a common winter-home maintenance issue in hard-water regions, where sediment buildup shortens the useful life of plumbing equipment.

What's next: - DFW residents with older tanks should inspect their water heater before the first winter freeze. - Homeowners hearing popping or rumbling sounds should contact a licensed plumber. - Mother Modern Plumbing says its 24/7 emergency hotline is available year-round for water heater appointments. - The company also directs customers to its LinkedIn page, Instagram account, Facebook page and YouTube shorts channel.

The bottom line: - Hard water plus winter cold can turn an aging water heater into a flood risk, and early maintenance is the safest fix.