What it means
Engineered systems include detailed plans for tank sizing, treatment units, pump stations, and dispersal areas based on soil tests and topography. A licensed engineer stamps drawings that Environmental Health reviews before permit issuance.
These systems are built when lot size, slope, soil, or environmental sensitivity exceeds what a conventional layout can handle.
Why it matters in Santa Cruz County
Steep Santa Cruz County parcels in Felton, Boulder Creek, and the North Coast frequently require engineered designs with mounds, ATUs, or restricted drain fields to satisfy county and regional board requirements.
Homeowner tip
Keep stamped plans, as-built records, and maintenance logs in one folder for future inspections and property transfers.
Related Wade's services
Related glossary terms
Also explore the Plumbing Glossary or call 831.225.4344 with questions about your property.