The relative or absolute increase in the frequency of adenocarcinoma of the cervix in the 1980s, coupled with the introduction of the endocervical brush, broom, and other endocervical sampling devices, has stimulated us to examine more carefully and classify more precisely the lesions of the endocervix.
If you do have one of these systems you need to know whether it's a conventional or alternative septic system, and exactly how it works. Gravity System-A conventional system which uses gravity to force the wastewater out into the drain field. 2  These types of septic systems use gravel as a filter. 3  Pressure Distribution System-A conventional system which involves the use of a pump.
The septic distribution box is part of the conventional drain field system. It distributes the effluent (wastewater) evenly to the drain field (leach field). The most common way to make this work is through the use of gravity.he equal distribution of the wastewater will maximize the life of the drain field and the entire septic system. An alternate distribution method uses pipes instead of a box to send wastewater into the drain field. In using this method, watertight pipes lead to the trenches in the drainfield.