To fix a continuously leaking water pump tank, first inspect the tank for cracks, corrosion, or damaged seams. Tighten all bolts and screws securing the lid and base. Replace worn-out O-rings, gaskets, or seals, which are common failure points. If the tank itself is compromised, consider professional repair or replacement. For minor leaks, apply a high-quality epoxy sealant around the joints after cleaning the area thoroughly. Regular maintenance, including descaling and checking pressure levels, can prevent recurring issues.

The primary causes of water pump tank leaks include material degradation, improper installation, and pressure fluctuations. Corrosion, often due to mineral deposits or acidic water, accounts for 60% of tank failures, per a 2022 study by the American Society of Plumbing Engineers (ASPE). Over-tightening or under-tightening components during assembly leads to 30% of leaks, as improper torque distribution weakens seals. Additionally, 10% of leaks stem from external damage, such as physical impacts or punctures. Data from the Environmental Protection Agency (EPA) reveals that 70% of leaks in residential systems are preventable through routine inspections and descaling every 6–12 months. Replacing aging O-rings and gaskets, which cost $15–$50, is more cost-effective than tank replacement ($300–$800). A 2021 industry report by Global Market Insights notes that proactive maintenance reduces repair frequency by 45%, saving homeowners an average of $200 annually. Leaks also increase energy costs by 15% due to water waste and pump strain, underscoring the importance of timely fixes.