A dripping electric water heater typically stems from sediment buildup, faulty heating elements, loose connections, or a malfunctioning pressure relief valve. To resolve the issue, flush the tank to remove sediment, inspect and replace damaged elements, tighten loose components, and test or replace the relief valve. Annual maintenance can prevent 80% of dripping incidents.

Sediment accumulation is the leading cause of dripping, as mineral deposits from hard water reduce heating efficiency and block water flow. The U.S. Department of Energy (DOE) reports that 15-20% of heater failures involve sediment-related blockages, leading to leaks. A faulty temperature-sensing element can cause uneven heating, resulting in pipe corrosion and dripping. The DOE estimates that 25% of element failures are due to sediment buildup. Loose electrical connections or pipe fittings may also create gaps, allowing water to escape. The International Association of Plumber/Heating Educators (IAPHE) notes that 30% of dripping cases involve loose connections. A malfunctioning pressure relief valve, which releases excess pressure, can fail if not tested annually. The Environmental Protection Agency (EPA) states that 10-15% of heater leaks originate from outdated or improperly functioning relief valves. Flushing the tank every 6-12 months, inspecting elements, and replacing valves as needed, aligns with DOE guidelines to extend heater lifespan by 2-3 years. Proper maintenance reduces repair costs by 40% and energy waste by 15%, as per IAPHE data.