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Septic Glossary

Septic Tank

The buried primary tank that separates solids from household wastewater before clarified effluent flows to the drain field or an advanced treatment unit.

Septic Tank

Also called: Primary tank, Settlement tank

What it means

A septic tank provides primary treatment through settling and flotation. Heavy sludge collects on the bottom, scum floats on top, and effluent exits through an outlet baffle or filter.

Tanks are sized by bedroom count and code requirements. Concrete, fiberglass, and plastic tanks all need watertight integrity and regular pumping to prevent solids from leaving the tank.

Why it matters in Santa Cruz County

Santa Cruz County tank installations must respect depth to groundwater and bedrock, which varies from deep sand near the beach to shallow rock on high ridges.

Homeowner tip

Know your tank location and last pump date; most households need pumping every 3 to 5 years.

Related Wade's services

Also explore the Plumbing Glossary or call 831.225.4344 with questions about your property.