septic system

Underground sewage treatment

A septic system is an underground wastewater treatment setup for properties not connected to municipal sewers.

Household sewage flows into a buried tank where solids settle and bacteria break down waste; liquid effluent then drains into a leach field where soil filters it further.

Common in rural areas: The septic system needs to be pumped every few years.

components

tank

Large storage vessel

outlet · scum · sludge · effluent · pipe · riser · lid · pump · alarm · filter

sanitation

wastewater

Contaminated drainage from buildings

public health · disposal · contamination · greywater · blackwater · waste treatment · environmental health · cesspool · disinfection · water quality

maintenance

pumping

Forcing flow mechanically

schedule · upkeep · repairs · troubleshooting · contractor · checklist · preventive · regularity · additives · risers

filtration

drainfield

Wastewater absorption area

infiltration · biofilter · sand filter · gravel bed · sedimentation · purification

soil

percolation

Liquid passing through pores

infiltration · saturation · clay · silt · sand · loam · permeability · groundwater · water table · absorption rate

bacteria

anaerobic

Not requiring oxygen

microorganisms · enzymes · biofilm · nitrification · denitrification · decomposition · microbiome · pathogens · coliforms · fermentation

Categories
Opposites
waste management infrastructure type

septic systemsanitary sewer

Wastewater transport piping

sewage treatment plant · public utilities

water system function

septic systemmunicipal water

Government-provided tap supply

water main

waste management approach

septic systemcesspool

Underground waste receptacle

outfall

Family

system, antiseptic, systemic, septic, aseptic, sepsis, septicemia, antiseptics, septicaemia

Familiarity
Top 200,000
Profile
Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G