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Category Archives: Clean Technology

Would you switch to tap water in Saigon?

For those living in Saigon long-term, it is natural to have concerns over the quality of the drinking water in the city. When I first arrived to Saigon in 2004, you dared not drink from the tap water. Everyone always ordered bottled water. Some 15 years later, the tap water has significantly improved. Yet, most, […]

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Temperature Inversion Pollution in Saigon

This morning Saigon suffered yet another bad airmorning with the AQI (air quality indicator) at 162 (50 AQI and below is healthy). With cooler weather, the air pollution in Saigon tends to get worse in the morning due to temperature inversions. What is Temperature Inversion? Temperature inversion is when the surface air temperature is cooler […]

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Changing BlueAir HEPA filter

You are supposed to change your BlueAir HEPA filter every 6 months. There is a display that tells you when to change it. I decided to see how long I could use my HEPA filter before changing it. I judged the effectiveness using my AirVisual Node. Today my air purifier finally struggled jeep my bedroom […]

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