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2. Septic tank - Wikipedia

   en.wikipedia.org/wiki/Septic_tank

   A septic tank is an underground chamber made of concrete, fiberglass, or plastic through which domestic wastewater flows for basic sewage treatment. [2] Settling and anaerobic digestion processes reduce solids and organics, but the treatment efficiency is only moderate (referred to as "primary treatment"). [2]

3. Dump station - Wikipedia

   en.wikipedia.org/wiki/Dump_station

   The holding tank can be safely emptied at a dump station. Greywater holding tanks can also be emptied at a dump station. Dump stations are often located at campgrounds , RV parks , truck stops , RV storage facilities, highway rest areas, recreation vehicle dealerships, marinas and other places that are frequented by recreational vehicles and boats.

4. Onsite sewage facility - Wikipedia

   en.wikipedia.org/wiki/Onsite_sewage_facility

   Onsite sewage facilities (OSSF), also called septic systems, are wastewater systems designed to treat and dispose of effluent on the same property that produces the wastewater, in areas not served by public sewage infrastructure. A septic tank and drainfield combination

5. Drain-waste-vent system - Wikipedia

   en.wikipedia.org/wiki/Drain-waste-vent_system

   A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere.When a column of waste water flows through a pipe, it compresses air ahead of it in the system, creating a positive pressure that must be released so it does not push back on the waste stream and downstream traps, slow drainage, and induce potential clogs.

6. Aerobic treatment system - Wikipedia

   en.wikipedia.org/wiki/Aerobic_treatment_system

   The aeration stage and the disinfecting stage are the primary differences from a traditional septic system; in fact, an aerobic treatment system can be used as a secondary treatment for septic tank effluent. [1] These stages increase the initial cost of the aerobic system, and also the maintenance requirements over the passive septic system.

7. Recreational vehicle terms - Wikipedia

   en.wikipedia.org/wiki/Recreational_vehicle_terms

   Tanks built in or mounted under the floor, used for storage of blackwater and graywater. Separate tanks are used for blackwater and graywater, often adding an extra tank for the shower or washing machine, if equipped. Tank level is monitored by an LED display inside the RV and all tanks drain to a single external hook up point for dumping.