One concern service providers have when troubleshooting a system is whether the septic tank or holding tanks are structurally sound and in good condition. Investigation of the tank for structural soundness starts as soon as the lid is removed. If the lid and tank are concrete the bottom of the lid should be evaluated. If the concrete shows signs of corrosion and flaking, the service provider should be alert for other corrosion problems. For a plastic tank, if the lid or access hole is misshapen it is an indicator that the tank has been structurally deformed.The top of a concrete
