To fix a leaking cement water tank, first assess the damage location and severity. Clean the affected area thoroughly, remove debris, and dry it. Apply a high-quality epoxy or polyurethane sealant specifically designed for concrete. For structural cracks, reinforce with carbon fiber strips or steel mesh. Ensure proper curing time and conduct a pressure test to confirm the repair. If the tank is extensively damaged, consider professional replacement.

Cement water tanks commonly develop leaks due to cracks, corrosion, or settling. The American Water Works Association (AWWA) reports that 25% of water storage failures involve concrete tanks, with environmental exposure and freeze-thaw cycles accelerating degradation. Epoxy sealants, which bond chemically with concrete, are effective for small cracks (≤0.25 inches) and resist hydrostatic pressure up to 150 psi. Reinforcement with carbon fiber increases tensile strength by 300%, as demonstrated in a 2021 study by the National Institute of Standards and Technology (NIST). Cost savings are significant: repairing leaks saves 70% compared to full tank replacement, which averages $15,000–$50,000. The Environmental Protection Agency (EPA) estimates that timely maintenance reduces failure risks by 40%, preventing $2 billion annually in water system disruptions. Proactive inspection every 2–3 years, as per AWWA standards, mitigates long-term damage.