## 4 Results and Discussion
### Estimation of Water Demand between 2020 and 2029
#### 4.6.1 Residential Water Demand  
Table 20 reports the annual residential water demand in different community types between 2020 and 2029 under normal and new normal conditions. \begin{table}
\begin{tabular}{c c c c c c c c c c c c} \hline \hline \multirow{2}{*}{**Community Types**} & \multicolumn{8}{c}{**Annual Residential Water Demand between 2020 and 2029 (Million m3)**} \\ \cline{2-13}  & **2020** & **2021** & **2022** & **2023** & **2024** & **2025** & **2026** & **2027** & **2028** & **2029** & **Average** \\ \hline Maikdaow Sub-district & 0.37 & 0.36 & 0.37 & 0.37 & 0.38 & 0.39 & 0.39 & 0.40 & 0.40 & 0.41 & 0.38 \\ Thepkrasatti Sub-district Municipality & 0.61 & 0.60 & 0.64 & 0.65 & 0.68 & 0.70 & 0.72 & 0.74 & 0.77 & 0.79 & 0.69 \\ Thepkrasatti Sub-district Sub-district & 0.44 & 0.42 & 0.44 & 0.45 & 0.47 & 0.48 & 0.49 & 0.51 & 0.52 & 0.53 & 0.48 \\ Paklok Sub-district Municipality & 1.19 & 1.15 & 1.23 & 1.24 & 1.30 & 1.33 & 1.37 & 1.41 & 1.45 & 1.48 & 1.31 \\ Sakhu Sub-district & 0.19 & 0.19 & 0.20 & 0.20 & 0.21 & 0.21 & 0.22 & 0.22 & 0.23 & 0.21 \\ Cherngtalay Sub-district Municipality & 0.46 & 0.45 & 0.47 & 0.46 & 0.48 & 0.48 & 0.49 & 0.49 & 0.50 & 0.51 & 0.48 \\ Cherngtalay Sub-district & 0.32 & 0.31 & 0.32 & 0.32 & 0.33 & 0.33 & 0.34 & 0.34 & 0.35 & 0.35 & 0.33 \\ Srisunth Sub-district Municipality & 1.73 & 1.74 & 1.85 & 1.88 & 1.96 & 2.01 & 2.08 & 2.14 & 2.22 & 2.28 & 1.99 \\ Kamala Sub-district & 0.19 & 0.19 & 0.20 & 0.20 & 0.20 & 0.21 & 0.21 & 0.21 & 0.21 & 0.20 \\ Kathu Town Municipality & 3.35 & 3.37 & 3.57 & 3.61 & 3.76 & 3.82 & 3.94 & 4.03 & 4.17 & 4.26 & 3.79 \\ Patong Town Municipality & 2.23 & 2.21 & 2.30 & 2.27 & 2.33 & 2.32 & 2.35 & 2.35 & 2.39 & 2.41 & 2.32 \\ Vichit Sub-district Municipality & 3.47 & 3.38 & 3.57 & 3.60 & 3.75 & 3.79 & 3.90 & 3.98 & 4.08 & 4.16 & 3.77 \\ Phuket City Municipality & 10.76 & 10.43 & 10.81 & 10.68 & 10.92 & 10.88 & 11.02 & 11.06 & 11.21 & 11.23 & 10.90 \\ Kohkew Sub-district & 0.46 & 0.45 & 0.49 & 0.50 & 0.53 & 0.54 & 0.57 & 0.59 & 0.61 & 0.63 & 0.54 \\ Rasada Sub-district Municipality & 3.23 & 3.12 & 3.27 & 3.26 & 3.36 & 3.38 & 3.46 & 3.50 & 3.57 & 3.61 & 3.38 \\ Chalong Sub-district Municipality & 1.80 & 1.75 & 1.86 & 1.87 & 1.96 & 1.99 & 2.05 & 2.10 & 2.16 & 2.20 & 1.97 \\ Rawai Sub-district Municipality & 1.25 & 1.21 & 1.28 & 1.28 & 1.33 & 1.35 & 1.38 & 1.40 & 1.44 & 1.46 & 1.34 \\ Karon Sub-district Municipality & 0.51 & 0.50 & 0.51 & 0.50 & 0.51 & 0.51 & 0.51 & 0.51 & 0.51 & 0.51 \\ \hline Total & 32.58 & 31.83 & 33.38 & 33.35 & 34.46 & 34.7 & 35.49 & 35.98 & 36.79 & 37.25 & 34.58 \\ \hline \hline \end{tabular}
\end{table} 
Table 20: Annual residential water demand in different community types between 2020 and 2029. The top three areas with the highest average total residential water demand are Phuket City Municipality (10.90 million m\({}^{3}\)), Kathu Town Municipality (3.79 million m\({}^{3}\)), and Vichit Sub-district Municipality (3.77 million m\({}^{3}\)). The top three areas with the lowest average total residential water demand are Kamala Sub-district (0.20 million m\({}^{3}\)), Sakhu Sub-district (0.21 million m\({}^{3}\)), and Cherngtalay Sub-district (0.33 million m\({}^{3}\)). According to the results, Phuket Island's average annual residential water demand will continuously increase between 2020 and 2029. Notably, residential water demand in urban areas is higher than in rural areas of Phuket Island. This finding indicates that growth rates of the population and consumption patterns differ between urban and rural areas of Phuket Island, as suggested by [PERSON] and [PERSON] (2016). They found that increasing water demand follows population growth, economic development, and changing consumption patterns. Furthermore, these findings are comparable to those of other studies. For instance, [PERSON] and [PERSON] studied the effect of urban expansion of Nakhon Ratchasima City, the regional center of Northeastern Thailand, on water demand and water usage in the Lam Ta Kong Watershed.