Home / Standards / GB 20922-2007 GB 20922-2007 Active The reuse of urban recycling water - Quality of farmland irrigation water 城市污水再生利用 农田灌溉用水水质 Standard Type GB ICS 13.060 CCS P40 Status 现行 Issue Date 2007-04-06 Implementation 2007-10-01 Responsible Dept 住房城乡建设部 Drafting Unit N/A