Reasons Behind Sediment Buildup in Water Heaters

plumber in Charlottesville, VA

Water contains natural minerals like calcium and magnesium that flow in the water heater. When water is heated, these minerals form into sediments and settle at the bottom of the tank. Sediment buildup can lead to issues like rising energy bills, strange noises, and fluctuating water temperatures. Speedy Rooter Plumbing is your trusted plumber in Charlottesville, VA, and we share the following reasons behind sediment buildup in water heaters.

Minerals in Water

When minerals in water are too heavy to remain in suspension when heated, they settle at the bottom of the tank. These minerals include calcium, magnesium, copper, iron, and more. Calcium carbonate is one of the most common sediments that is found at the tank’s bottom.

The Problem with Sediments

Sediments can prevent heat transfer in a gas water heater as they act as a barrier between the tank and the burner plate. This can eventually lead to water leaking. If you notice your gas heater is producing a lesser amount of hot water than before, there may be sediment buildup. You may require professional plumbing services to fix the problem.

Sediments can also cause bacterial growth in the water heater. The bacteria may not cause any disease, but they increase the corrosion of the water heater lining and produce a foul smell. These issues are a serious problem and require professional plumbing repairs.


Sediment can be dissolved chemically using a chemical descaler. It is used with no water in the heater and while the gas is turned off. Ensure that you look for a licensed plumbing company flush out the water from the heater. We recommend that you have your water heater flushed yearly to remove sediments.

Speedy Rooter Plumbing offers a range of plumbing, sewer, and septic services, including emergency plumbing repairs. Contact us today to schedule an appointment.

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