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Clean Technology

Would you switch to tap water in Saigon?

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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 people, such as myself, will be a bit weary to drink from the … [Read more...] about Would you switch to tap water in Saigon?

Temperature Inversion Pollution in Saigon

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This morning Saigon suffered yet another bad air morning 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 then the air above it (air is … [Read more...] about Temperature Inversion Pollution in Saigon

Changing BlueAir HEPA filter

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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 below 50 AQI. Hence I changed the filter today.Below is my HEPA filter … [Read more...] about Changing BlueAir HEPA filter

Recycling in Saigon

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You always see workers gathering recyclables in Saigon. There are small privately owned centers in the city. Sometimes you will see workers meet in one area to aggregate what they collected. They will deliver these items just down Vinh Khánh street in District 4. … [Read more...] about Recycling in Saigon