The social, environmental and economic impact of Nazava water filters

The impact of Nazava Water filters is large. Here we explain our impact to date and how we calculate and validate our social, environmental and economical impact numbers.

  • The health Impact  of Nazava water filters: Access to safe and cheaper drinking water: 681,000 people (2018), 1,575,000 people (2022) [assuming 5 people/households (see data underlying assumption]
  • Economic Impact: Average saving of US$68/year/household; [based on costs of boiling on LPG and buying water at refill-stations] Accumulative household savings 2018: US$ 16 million, 2022: US$ 35 million;  based on research by Santa Clara University
  • Environmental Impact Accumulative CO2 reductions; 33,000 tC02 (2018) and 70,000 tCO2 (2022) (based on a CO2 reduction of 0.27tCO2e/filter/year, externally audited for Carbon Credits by Bureau Veritas, and listed by the Voluntary Gold Standard)
  • Impact on disposable income (anti-poverty): Accumulative increased disposable time for women who do not need to seek fuel wood or boil water: 16,000 FTE (2018), 42,000 FTE (2022). Calculation: fraction of consumers using wood for boiling water (25%) times the time women indicate to spend on fuel wood collection and boiling water (0.32 FTE, or 1.8 hour per day, based on study on on fuel use habits by Kopernik) this was confirmed by study from HEC Paris students in 2017
  • Impact of our filters on jobs and income (economic impact): 100 resellers (66 women) earned an average additional monthly income of US$50 (source: salesdatabase).

Everything together adds op to a  Social Return on Investment (SROI) of US$ 2,90 (as found by National University of Singapore  Students study). This means that every dollar invested in Nazava yields a social return of almost three dollars, that is a very clear measure of the impact of Nazava Water filters isn’t it?