What it means
A conventional system sends wastewater to a septic tank where solids settle and scum floats. Clarified effluent flows by gravity to perforated pipes in a drain field, where soil completes treatment.
These systems work on sites with suitable soil depth, percolation rates, and setbacks from wells and waterways. They remain the baseline design where local codes and site tests allow.
Why it matters in Santa Cruz County
Many inland Santa Cruz County lots with deep, well-drained soils still qualify for conventional systems, while coastal and hillside parcels more often need engineered alternatives.
Homeowner tip
Pump the tank on the interval your pumper recommends, even when the system seems fine above ground.
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Related glossary terms
Also explore the Plumbing Glossary or call 831.225.4344 with questions about your property.