Many of the inquiries the Dare County Water Department receives about water quality issues can be traced back to the hot water tank. Inquiries we have received that were the result of hot water tank issues include small plastic pieces in water, foul-smelling water, discolored water and "slimy" water.
By performing regular maintenance, most in-home hot water system issues can be avoided. This includes flushing the tank, checking the tank's temperature and pressure relief valve (TPR valve), and checking the anode rod, a 3- to 5-foot metal rod inside the tank that diminishes corrosion. These actions should be performed at least yearly and in accordance with the manufacturer's recommendations.
Lack of proper maintenance can result in faster corrosion inside your hot water tank. If corroded materials that accumulate at the bottom of the tank are not regularly flushed, they can enter into hot water pipes and cause your hot water to appear rust-colored.
Hot water tanks flushed periodically will also operate more efficiently, heating water to a higher temperature more quickly. If the burners that heat water are covered by too much sediment, water may not be heated to a high enough temperature. This can cause bacterial growth in your tank and result in hot water that has a rotten egg-like smell.
If you find tiny pieces of plastic in your hot water or faucet aerators, the hot water tank may also be the source. Various parts inside a hot water tank are made of plastic, including some TPR valves, the temperature gauge and the dip tube. These plastic parts are prone to break down over time due to constant contact with hot water.
When performing any home plumbing maintenance be sure to follow all appropriate safety guidelines and the manufacturer's instructions or contact a licensed professional plumber.
