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Relocation of Sha Tin Sewage Treatment Works to Caverns

When conducting the review of the proposed relocation site, the feasibility study consultant has identified a nearby site
suitable for cavern development assessment for the existing STSTW, including Nui Po Shan of A Kung Kok, Shek Mun,
Ma On Shan, Kau To Shan South and Kau To Shan North.

The feasibility study has confirmed that Nui Po Shan of A
Kung Kok is the best site for the relocation of the STSTW. The
methodology and result of the reconfirmation review have been
examined by an independent expert panel composed of three
professors from the Hong Kong University of Science and
Technology. To sum up, Nui Po Shan of A Kung Kok site has
the following favourable conditions:

The geology of this area, belonging to hard
granite with no obvious weak zones and faults,
suits for construction of large caverns most
In the proximity of the existing Sha Tin Sewage
Treatment Works and effluent export tunnel (which
transports the treated effluent from the Sha Tin
Sewage Treatment Works to Kai Tak River in Wong
Tai Sin for discharge), relocating the Sha Tin Sewage
Treatment Works to this area will minimize the impact
on the upstream sewerage system and the downstream
disposal system, thereby minimizing the disturbance to
the whole Sha Tin District, reducing the construction and
operation costs and shortening the construction period
The majority of the area belongs to government land
The community and environment will be enhanced wholly after
relocating the Sha Tin Sewage Treatment Works
With appropriate measures, the traffic impact near the
proposed relocation site arising from the relocation works
would be well mitigated.
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