FREQUENTLY ASKED QUESTIONS

Understanding Greywater

Greywater is a lightly polluted wastewater that is generated from activities such as dishwashing,  showering/bathing, laundry, handwashing.

On the other hand, blackwater or sewage is the wastewater generated from toilet and urinals. Sewage consists of solids (faeces) as well as heavy amount of bacteria and pathogen.

Greyblackwater

Greywater generated from activities such as shower and laundry primarily consists of suspended solids (dirt, hair, fibre, lint, etc.)  The greywater also has dissolved soap as well as other chemicals.

Greywater Contents

Greywater generated due to bathing and cloth washing may have minor faecal contamination with the associated pathogens and parasites such as bacteria. However, the concentration of these pathogens is significantly lower compared to raw sewage. It can be eliminated with minimal treatment

No, our treatment system is not designed for handling faecal matter and high pathogen contents. Hence, this system shall not be able to operate if toilet waste is mixed with greywater.

JalSevak Greywater Recycling

Greywater largely contains suspended particles with very low concentration of pathogens and dissolved substance. It can be treated with simplified techniques such as physical filtration followed by small chemical treatment. Reusing greywater conserves freshwater and reduces burden on municipal sewage system. 

Greywater is treated with multiple stages of filtration followed by disinfection and aeration. Read detailed description here.

  • Individual houses
  • Apartment buildings
  • Hostels and Guest Houses
  • Hotels and resorts
  • Public washrooms and toilets
  • Any other facility where significant amount of greywater is generated
  • Flushing of toilets and urinals
  • Gardening and landscaping
  • Floor washing
  • Construction activities
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