臺北自來水園區環境教育中心

量水室為方型磚造及鋼筋混凝土之建築，功能為水量計量，故採向下挖鑿以應功能之需。表面凹槽刻痕裝飾線條，牆角部分為紅磚外露表現，而量水室的窗戶及窗框為上方半圓拱形，下方方形的造型。此建築推估為臺北水道主工程竣工後新增建設，但仍可發現與相關建築設施有著整體規劃設計。量水室原始興建年代與設計，因檔案佚失無法得知。作為小觀音山蓄水池出水計量之用，於民國66年公館淨水場完工後功成身退。
The Metering Room is a square building made of brick and ferroconcrete. Its function was to measure water volume.The walls of the building were decorated with fillisters and scores, its four corners had original red brick deliberately left revealed, and its windows and window frames were semicircular on the upper half and square on the lower half. It is speculated that this building was added after the completion of Taipei City's main waterworks; however, the facility still matches the overall plan and design. The original year and design of this structure is unknown due to the loss of files; it was retired from service metering the water output of Guanyinshan Distribution Reservoir in 1977 when the Gongguan Purification Plant was built.
Having undergone repair and renovation, the room is now a heritage site restaurant offering a variety of teas and simple meals.