Countries where “% Piped” was estimated from regression equations (see Fig. 1) and the resulting estimates.

The maximum country-level “% Piped” value was set to the “% Improved” value reported by JMP.Countries where “% Piped” was estimated from regression equations (see Fig. 1) and the resulting estimates.国家层面的"管道供水占比（% Piped）"最大值被设定为联合监测项目（JMP）所报告的"改善供水占比（% Improved）"。针对通过回归方程（见图1）及所得估算值推算"管道供水占比"的国家，此规则均适用。