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2. 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 is a fairly common type of on-site sewage facility in the Western world.

3. Sewage treatment - Wikipedia

   en.wikipedia.org/wiki/Sewage_treatment

   These systems include septic tanks connected to drain fields, on-site sewage systems (OSS), vermifilter systems and many more. On the other hand, advanced and relatively expensive sewage treatment plants may include tertiary treatment with disinfection and possibly even a fourth treatment stage to remove micropollutants. [3]

4. 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.

5. Sewage regulation and administration - Wikipedia

   en.wikipedia.org/wiki/Sewage_regulation_and...

   Sewage treatment systems in the United States are subject to the Clean Water Act (CWA) and are regulated by federal and state environmental agencies. In most states, local sewage plants receive discharge permits from state agencies; in the remaining states and territories , permits are issued by the United States Environmental Protection Agency ...

6. Conservation Chat: Give septic systems a proper checkup to ...

   www.aol.com/conservation-chat-septic-systems...

   To learn more about what you can do to extend the life of your septic system, find resources to help in replacing a failing system, be sure to call Ashland SWCD at 419-281-7645 to register for the ...

7. Wastewater treatment - Wikipedia

   en.wikipedia.org/wiki/Wastewater_treatment

   Gravity separation of solids is the primary treatment of sewage, where the unit process is called "primary settling tanks" or "primary sedimentation tanks". [17] It is also widely used for the treatment of other types of wastewater. Solids that are denser than water will accumulate at the bottom of quiescent settling basins.