There is a lot of room for savings. With regard to recycling water, Ouyang has been sparing no effort advocating wastewater treatment and reuse for irrigation and then again for other purposes. "That would resolve most of Taiwan's water shortage!"
工業節水有待努力在污水循環利用上，多年來推動污水下水道不遺餘力的歐陽嶠暉呼籲，將污水回收後轉移為農業灌溉，再將農業灌溉用水轉移至其他用途，「如此台灣的缺水問題就解決大半了！」