Drainage Services Department 渠務署 Agreement No. CE 39/2007 (DS) Outlying Islands Sewerage Stage 2 – Lamma Village Sewerage Phase 2 – Investigation, Design and Construction 合約編號 CE 39/2007 (DS) 離島污水收集系統第2階段–南丫鄉村污水收集系統第2期–勘測研究、設計及建造 Contract No. DC/2021/08 Outlying Islands Sewerage Stage 2