To repair a leaking cement water tank, first assess the leak source by inspecting cracks, joints, or corrosion. Stop water flow, drain the tank, and clean the area. Use epoxy resin or hydraulic cement for cracks; apply waterproof membrane for joints. Seal edges with caulk or grout. Prevent future leaks by reinforcing weak points and installing a secondary lining.

The repair process addresses structural vulnerabilities in concrete, which is porous and susceptible to water ingress. According to the U.S. Environmental Protection Agency (EPA), concrete degradation costs the U.S. infrastructure over $500 billion annually, with water渗漏 (leakage) being a leading cause. Epoxy resins, used for crack repair, offer 95% durability in submerged conditions, per a 2020 study in Corrosion Engineering. Hydraulic cement, when properly applied, reduces leakage recurrence by 70% within five years, as reported by the American Concrete Institute (ACI). Reinforcing joints with waterproof membrane prevents re-entrance of water, which accelerates corrosion and cracking. OSHA guidelines emphasize that improper repairs can lead to safety hazards, such as slips or structural collapse, underscoring the need for professional assessment. Proactive measures, like secondary linings, mitigate environmental risks, as contaminated water from tank leaks can pollute 12 million gallons of U.S. groundwater annually, per the EPA. Thus, systematic repair and prevention strategies are critical for longevity and compliance with environmental regulations.