Baffles & Lids
What fails
Baffles are the pipes or walls at the inlet and outlet that keep scum and solids inside the tank. Old concrete baffles crumble and fall off, letting solids wash straight into the drain field.
The usual fix
A broken baffle is usually replaced with a plastic sanitary tee, and the outlet side can take an effluent filter at the same time. Cracked lids are replaced, and adding a riser to grade means nobody has to dig for them again.
Before you say yesA paver laid over a cracked lid isn't a fix. The old lid can still crumble into the tank underneath it.
