What should you do when a septic tank backs up?

A backup means wastewater has nowhere to go, so the first step is to stop adding to it — no flushing, laundry, or dishwashing. Keep kids and pets away from any sewage indoors or in the yard, since it is a health hazard. Call a licensed operator for an emergency pump-out; many in Litchfield County offer same-day and after-hours service. Avoid chemical drain cleaners, which can make things worse and harm the system. Once the tank is pumped, the operator can tell you whether it was a full tank, a clog, or a failing drain field — which decides what comes next.