Small WWTP

Are you worried that contaminated effluent and bacteria from the septic system would leak into your home or into your drinking water causing illness to you and your family?

It is time for change: Banque de L’habitat is here to assist you in Installing a small wastewater treatment plant

What is a small wastewater treatment plant?

A small wastewater treatment plant is a system attached to a property to dispose and treat grey water (baths, sinks, showers, dishwashers etc.) and blackwater (toilets), before being safely discharged into the environment. 

In domestic situations, a sewage treatment plant is primarily used by houses in rural areas that are too isolated to be connected to a main sewer network.

Why opt for a small wastewater treatment plants for your household?


  • Affordable 
  • Requires minimal power
  • Reduces the cost of recurrent desludging


  • Requires minimal maintenance
  • Desludging once a year, depending on usage
  • Minor repair of blowers
  • Occasional addition of consumables (e.g. Chlorine) 


  • Lifespan ranges from 20 to 40 years


  • Reduces health risks from untreated sewage seeping into the ground and contaminating underground water
  • Reduces groundwater and soil pollution

What makes your small wastewater treatment plant eligible?

  • Treated effluent must meet emission limit values set by the Ministry of Environment in decision 8/1 of 2001: National Standards for Quality of Discharged Wastewater
  • The wastewater treatment plant needs to meet the standards EN 12566:2005: set by LIBNOR (identical to the European standard)

This loan product was developed by Banque de L’habitat with the technical support of the USAID-funded Water Sanitation and Conservation (WSC) project.