Coliform bacteria

References

1. Márcio Claudio Cardoso da Silva and Maurício Luiz Sens,
   Water purification by direct solar distillation process in isolated households, Acta Scientiarum. Technology (2014)
2. Felipe Tiago do Nasciemento,
   Efficacy of a solar still in destroying virus and indicator bacteria in water for human consumption, Rev. Ambient. Água (2018)