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Proper LP Inspection - Texas Onsite Wastewater Association

Proper LP Inspection - Texas Onsite Wastewater Association

Low Pressure Dose

Low Pressure Dose (LPD) • Description • Two compartment septic tank (or ATU) • Pump Tank/Chamber • Effluent pump and controls • High-water alarm • Supply line and manifold • Distribution laterals • Media for effluent infiltration • Suitable area • Sufficient soil and separation to groundwater and rock horizons Illustration by Bruce Lesikar; used with permission of AgriLife Extension

Low Pressure Dose (LPD) • Operation • Pump tank volume rises to activate float for dose (or timer event controlled) • Pressurizes piping network to achieve pressure • Effluent quickly flows out into media (generally gravel) through small diameter holes at equal spacing • Temporary ponding and dispersal/diffusion into soil Illustration by Bruce Lesikar; used with permission of AgriLife Extension

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