Nigeria is a signatory to the United Nations Sustainable Development Goals (SDGs). Target 6.2 of Goal 6 has requested countries who are parties to the SDGs to end open defecation by 2030. Notwithstanding this, the Government of Nigeria launched a far more ambitious National Road Map in 2016 to end open defecation in the country by 2025. Since water and sanitation are inextricably linked, this paper estimates Nigeria's freshwater requirement to attain open-defecation-free status by 2025. The analysis revealed that the quantity of freshwater required amounted to between 2.74 and 2.94 × 10⁶ cubic metres (m³) per day or between 1.0 and 1.1 × 10⁹ m³ per year under the assumptions made. This amount is relatively less than Nigeria's total water resources potential estimated at 375.1 × 10⁹ m³/year. The data presented will help increase the reliability of estimates of water for sanitation in Nigeria.

尼日利亚是联合国可持续发展目标的签署国。目标6的具体目标6.2已要求实现可持续发展目标的国家在2030年前结束露天排便。尽管如此，尼日利亚政府于2016年启动了一项更具雄心的国家路线图，以在2025年前结束该国的露天排便。卫生与卫生之间有着千丝万缕的联系，本文估计尼日利亚到2025年要达到无粪便状态的淡水需求量。分析显示，每天所需的淡水量为2.74至2.94×10 ⁶立方米（m ³）或在1.0和1.1×10 ⁹ m ^3之间每年根据所做的假设。这一数量相对于尼日利亚的总水资源潜力（375.1×10 ⁹ m ³ /年）要小。所提供的数据将有助于提高尼日利亚卫生用水估计的可靠性。