Signs of system distress include:

Gurgling sounds in your plumbing Toilets and sinks draining slowly

System backups

Black or gray water coming from your home’s outlet tile discharging into a creek or ditchCertain areas of the yard are wet, possibly with standing black or gray water

Foul sewage odors noticed in the house or outside *BE SAFE: If odor is present you should immediately take appropriate safety measures to eliminate propane or gas leaks as the cause