Background
Urban water and sanitation projects combine networks of trunk and secondary sewers, pumping stations, and household connections to convey wastewater from populated areas to treatment and discharge points; new access roads are often built or repaired to support construction and long‑term operation. The Siem Reap WaSSIP works inspected on 1 June 2026 include physical infrastructure elements commonly required for integrated urban sanitation systems: trunk and secondary sewer lines, pumping stations on the east and west sides of the Siem Reap channel, household sewer connections, and associated concrete road reinstatement.
The WaSSIP project in Siem Reap is implemented under contract packages MPWT-CW-6A and MPWT-CW-9 and is supervised by the Ministry of Public Works and Transport. On 1 June 2026 MPWT reported physical completion rates of 90.70% for MPWT-CW-6A and 37.22% for MPWT-CW-9.
Key Developments
On 1 June 2026 MPWT officials led an on-site inspection of construction progress in Siem Reap city. The inspection team included project consultants CTI Engineering International Co., Ltd JV PPIC Co., Ltd, contractors China Railway No.2 Engineering Group Co., Ltd and Phkay Prek & Jace Korea-Joint Venture, and provincial drainage management units. Observations recorded during the visit covered installation of trunk and secondary sewer mains, household sewer connections, construction status of two new pumping stations (west and east of the Siem Reap channel), and completion of new concrete road works associated with the sewer installations.
Institutional Role
MPWT provides project-level oversight for WaSSIP implementation in urban areas through contract management, technical inspections, and coordination with consultant and contractor teams. The presence of identified contract package codes (MPWT-CW-6A and MPWT-CW-9) and named implementing contractors enables traceability of construction scope and contractual responsibility for specific infrastructure components.
Operational Implications
Installation of trunk sewers and pumping stations is a prerequisite for connecting individual households to a centralized wastewater network and for operationalising system-level sanitation services. The marked difference in completion rates between the two contract packages reflects staggered construction timelines for distinct work scopes, which can affect the scheduling of commissioning activities for sections of the network.
Official Source
Source: Ministry of Public Works and Transport (MPWT) Facebook post, 1 June 2026: MPWT post.
