What are common signs of a failing septic system?

Water and sewage from toilets, drains, and sinks backing up into the home’s plumbing

Bathtubs, showers, and sinks draining very slowly

Gurgling sounds in the plumbing system

Standing water or damp spots near or over the septic tank or drainfield

Sewage odors around the septic tank or drainfield

Bright green, spongy lush grass over the septic tank or drainfield, even during dry weather

Straight pipe discharging untreated wastewater to the ground surface

Algae blooms in nearby lakes or waterbodies

High levels of nitrates or coliform bacteria in surface waters or drinking water wells