What is the best way to fix a leaking septic tank?

Injecting the seam with an epoxy resin is the most effective approach to address a leak in a septic tank because it provides a durable, waterproof seal that can effectively stop the flow of effluent where the tank has developed a crack or seam separation. Epoxy resins are specifically designed to bond well with concrete and can withstand the pressures and conditions found in septic tanks. This method is less invasive and more cost-effective than replacing an entire tank or filling it with concrete.

Options like replacing the entire tank are often unnecessary for minor leaks, as they involve significant labor and costs that might not address the immediate problem effectively. Filling the tank with concrete is not a viable solution as it can damage the tank and render it unusable. Installing a new lid may address surface leaks but would not fix leaks occurring at the seams or body of the tank, which are more common issues requiring remediation. Hence, the option of injecting an epoxy resin presents a practical and efficient solution for sealing leaks in septic systems.