这一措施必须基于覆盖各种污染物的全面的水质评估方法 — — 非洲市政供水目前只检测10—40种污染物，这是远远不够的 — — 并且一旦出现新污染物，也要纳入覆盖范围。
Such an effort must be based on a comprehensive approach to assessing water quality that covers a wide range of pollutants – far more than the 10-40 that most African utilities now monitor – with the expectation that new pollutants will be added as they emerge.