Chamber fields are commonly given a 30% field size reduction over pipe in gravel. Infiltrator leach field chambers are high-density polyethylene arches that interlock to form a continuous drainage area with a much greater storage 'surge' volume than conventional pipe-in-gravel leach fields.
Infiltrator® chamber leach field systemsare far superior to pipe-in-gravel in every aspect: smaller leach field size due to optimal percolation, increased retention capability for heavy loading days, root infiltration protection for long term viability, resistance to traffic, and more. Many people don't understand that perforated pipe in a gravel bed is NOT the best choice for a long-lasting, durable septic system. If allowed by your local building department, it is always best practice to divert household greywater to a separate leaching area. You want to encourage helpful good bacteria (digesting anaerobic cultures) to grow in your septic tank and organically treat the waste, not kill helpful bacteria with detergent laden graywater. Greywater from washing machine, sinks and showers contains soaps designed to kill bacteria (clean and disinfect things) and thus discourage optimal septic tank function. Not as effective treatment as a larger leach field, where sewage percolates slowly over a larger area, leach pits are an alternative for smaller properties only where high seasonal ground water is not present. A leach pit is a deeper, larger hole filled with rock for disposing of wastewater in a smaller footprint. The typical leach field is a series of chambers or rock filled trenches where effluent is further treated as it slowly percolates through the soil. As incoming sewage from the house fills first compartment, clarified liquids are forced to leave the second chamber of the septic tank and flow out to the leach field or leach pit. Between these two scum layers is a zone of clarified liquid effluent which is internally piped to the second compartment of the septic tank for additional settling. Solid waste settles into a sludge layer on the bottom and fats float to the top of the first compartment.
Effluent flows directly from your household plumbing into a watertight, underground, two compartment septic tank. The wastewater your home produces is referred to as 'effluent' and consists of blackwater (toilet and garbage disposal waste) and greywater (shower, sink and laundry waste).
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