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Important Information for Owners of Septic and Onsite Treatment Systems The following guidance is a collaborative effort of wastewter professionals within the National Onsite Wastewater Recycling Association (NOWRA). The purpose is to identify common issues that can cause problems with the operations of newer onsite treatment and traditional septic systems. Many operational problems exist today because owners are unaware of the results of daily practices to these systems.
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Our Rivers Are In Danger - The Gulf of Mexico Dead Zone The Gulf of Mexico dead zone is an area of hypoxic (less than 2 ppm dissolved oxygen) waters at the mouth of the Mississippi River. Its area varies in size, but can cover up to 6,000 - 7,000 square miles. The zone occurs between the inner and mid-continental shelf in the northern Gulf of Mexico, beginning at the Mississippi River delta and extending westward to the upper Texas coast.
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How Septic Systems Work and the Different Types System Description. A septic tank system uses natural processes to treat and dispose of the wastewater generated in your home. It typically consists of a septic tank and a drainfield, or soil absorption field. The septic tank provides the first step in treatment. As wastewater flows into the tank, the heavier solids settle to the bottom to form a sludge layer, and the lighter solids, greases, and oils float to the top to form a scum layer. The liquid wastewater (effluent) from the tank flows into gravel-filled trenches in the drainfield where it is distributed via perforated pipes and then treated by the natural soil system. The diagram below shows the components of a typical septic system.
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