污水下水道系統號稱為都市之靜脈，是國家進步的象徵，能將人們生活產生的浴室、廁所、廚房等家庭污水輸送到污水處理廠進行處理，將乾淨的水回放河川，或是回收進行二次使用。
在台灣，污水處理的費用一半由政府補助，另一半其實名列在水費單上，交由人民自己負擔。如果你的水費單上列出了：「污水下水道使用費」，即代表住戶有完成污水管接管，生活產生的污水會經由下水道輸送至鄰近污水處理廠。
在許多國家，污水處理費沒有列在水費單上，但這並不代表住戶無接管，而只是收費單位或是收費方式不同。以瑞典來說，這些費用都包含在社會福利中，反映在國家極高的稅額。而在美國一些城市，下水道相關費用則是列在「公共衛生費」。有些國家細分至「污水排除費」與「污水處理費」，有些則囊括於「水相關費用」。名稱不同，但其實都是同一個，解決民生污水的關鍵之一。
下一次收到水費單時，不妨好好的看一下內容。如果發現沒有「污水下水道使用費」，可以詢問一下縣市政府或是里長區公所，自己的住家是否接了污水管？若是沒有，可以要求加速接管，讓自己產生的污水能被好好處理與利用。
The sewer system is called the vein of the city. It is a symbol of civilization. It can transport household sewage from bathrooms, toilets, and kitchens to sewage treatment plants for treatment, returning clean water to the river, and recycling water for second use.
In Taiwan, half of the cost of sewage treatment is subsidized by the government, and the other half is actually listed on the water bill and is borne by the people. If your water bill lists: "sewage sewer usage fee", it means that your living building has the sewerage which can send waste water to sewage treatment plant.
In many countries, sewage fees are not listed on the water bills, but this does not mean that the wastewater is not treated. In Sweden, these expenses are included in social welfare, which is reflected in the country’s extremely high taxes. In some cities in the United States, sewer-related costs are listed in "public health expenses." Some countries are subdivided into "sewage disposal fee" and "sewage treatment fee", and some are included in "water-related costs". The names are different, but in fact they are all the same, which is one of the keys to solving people’s living sewage.
The next time you receive a water bill, you may wish to take a good look at the content. If you find that there is no "sewage fee", you can check with the county and city government whether your home has a sewage pipe? If not, you can request to have one, so that the sewage generated by yourself can be treated and used properly.
