Aerobic septic systems in Lake Charles
Calcasieu Parish often requires mechanical aerobic treatment units when soil is poor, groundwater is high or the lot is small. The Parish and the Louisiana Department of Health both publish guidance on these systems.
How an ATU differs from a conventional tank
An aerobic treatment unit adds oxygen with a blower or air pump so bacteria break sewage down more thoroughly. Most units have a trash chamber, aeration chamber, clarifier, disinfection (often a chlorinator) and an alarm.
Why they are common here
High water tables and clay soils around Lake Charles frequently fail a percolation test for a conventional drain field. When that happens, LDH permits an aerobic plant with an approved effluent-reduction method instead.
Maintenance that matters
- Keep the air pump running. A silent blower is an emergency for the biology in the tank.
- Do not ignore the alarm light or buzzer.
- New plants come with a two-year service contract (ANSI/NSF 40 requirement) with visits about every six months.
- Tank pump-outs must be done by a state-licensed sludge hauler.
Parish contacts
Calcasieu Parish runs a mechanical sewer inspection program. For homeowner certification questions, LDH Regional Sanitarian: (337) 475-3237 (number published by the Parish). Major repairs should go through a licensed contractor.
Request a quote or call (337) 555-0100