集合住宅給水設備老化對水質影響之研究

Integration of Equipment Aging Influences on Water Quality Variation in Apartment Houses

近年來國內市面上飲用水販賣情況大幅成長，顯示部分民眾對自來水作為飲用水的不信任與疑慮。即使自來水水質處理達到飲用之法定標準，其中最令人擔心的還是來自建築物內供水系統過程中的污染。本論文主要目的在於探討建築物內給水設備的老化現象，並釐清建築設備供水過程中造成水質變動之問題。研究內容以抽樣調查方式，對大台北地區各種使用年限之集合住宅共113戶進行調查與檢測，並選定六項水質指標作為水質檢測評估之基準。研究成果顯示集合住宅內的供水設備系統，從蓄水池、水塔、配管到末端用水器具，水質明顯產生變化。雖然大部分調查案例之供水末端水質情況仍在法定基準範圍內，但是建築物內供水系統造成的水質變動與公眾飲水安全問題的確值得注意，國內建築設計上考量加強供水水質，積極導入上質水供應系統設備乃當務之急。

The number of water vendors has increased rapidly in Taiwan recently. Even though the municipal water is good enough, the people always worry that the water quality might change from the building inlet point to the faucet outlet in a building. The primary purpose of this research is to verify this general impression and determined the actual water quality problems. This research project randomly chose 113 families using tap water in Taipei City. We selected six physical water quality indexes including pH value, residual chlorine, turbidity readings, watercolor, total density of solid and conductance for inspection and analysis. As a result, we have seen that water quality changes from the storage tank inlet point to the kitchen faucet outlet point in a building. Although the large majority of cases examined are within or near to quality measures, a few cases are still over the criteria for drinking water. People have a reason to worry about drinking tap water in buildings. Therefore, to offer a drinking water supply system additionally is a practical alternative to the present policy, and that would be better than to improve the water quality in existed water supply system.