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WATA team



Sodium hypochlorite is mentioned in the WHO guidelines for preventing CoV-2-CoRSA infections. The lipidic external structure of corona viruses does not make them very resistant to this type of commonly used disinfectant:

In the hospital setting, medical areas must be disinfected at least twice a day with a 0.1% concentrated solution. Floors and surfaces affected by human secretions or blood require a concentration of 0.5%

In households where a case of COVID-19 is suspected or proven, contact areas such as bathrooms, door handles, etc. should be sprayed with a 0.1% concentrated solution after cleaning.

Here are the full WHO recommendations


A study published in the “Journal of Hospitaline Infection” cross-checks the results of 22 different studies and shows that sodium hypochlorite can disinfect surfaces in 1 minute, even though the virus can have up to 9 days of persistence on plastic, for example.
The full scientific article here



  • 1.5 million beneficiaries
  • 36 health centres
    equipped with 36 WATA
  • Client: Ministry of Health of Chad
  • Funding: SDC
  • Local partner: Comeca Sarl

Burkina Faso

  • 300’000 beneficiaries
  • 59 health centres
  • equipped with 75 WATA
  • Client: Ministry of Health of Burkina Faso
  • Funding: SDC
  • Local partner: Burex-3eA

“Equipping health centres with WATA technology makes it possible to compensate for the lack of chlorine through decentralised production. Deployed in an emergency context linked to COVID-19, the devices are intended to have a lasting impact, particularly against cholera epidemics”.

Fatimé Abdallah Mahamat,
Program Manager,
Swiss Cooperation Office in Chad

  • Wata™
  • 2021/03/10