Abstract:
The outbreak of COVID-19. The government has imposed lockdown measures that impact to reduce the number of tourists and people have to live and work at home. But in 2021, there was a more severe epidemic than 2020. As a result of these factors, water demand has changed significantly. This study is analyzed the impact of changes in factors through the outbreak of COVID-19 in the overview of all provinces in Thailand. Using dataof water usage with the Demographic, Meteorological and People's living habits during 2019 - 2021 were selected to find relation models by using multiple linear regression equation. And analyze the impact of changes in various factors during the COVID-19 outbreak. towards changes in total, resident and non-resident water demand by statistical values. The results found that, The resident water demand has increased, but the nonresidential water demand has declined during the COVID-19 outbreak. And the water demand in tourism and industrial provinces has changed more than other provinces. The impact of factors through the outbreak of COVID-19 are the electricity consumption, number of tourists, number of vehicles registeration and fuel sales volume.