WATER SUPPLY SERVICES CONSIDERATIONS IN URBAN PLANNING

Service reservoirs (fresh water/salt

water/artificial) should be located as

near as possible to the area they served

and, wherever possible, sited at a level

where water can be fed by gravity to

the community.

Water Service Reservoir for Urban Areas

Water Service Reservoir for Rural Areas

The design of the reservoirs (if there is

one in the site area) should reduce

adverse visual, landscape and ecological

impacts. Landscape treatments should

be incorporated in the design as well.

Black & Veatch design wins award for protecting environment at the University of Hong

Kong; Innovative cavern reservoir design helps preserve listed buildings, hillside, trees,

saves space and money, and reduces waste

They should normally be located within reasonable

proximity to the source of supply to ensure a positive suction

head is available.

Sites for pumping stations should have adequate vehicular

access to facilitate maintenance and transportation of

materials and dangerous goods (disinfectant substances,

etc.).

Pumping stations and Water Treatment Facilities should be

located away from residential or other sensitive uses,

wherever possible, to minimize noise problems.

Salt water pumping stations (if site area is a coastal/ near

coast area) should be located as near as possible to seafront

with access to a source of clean sea water. A minimum clear

distance of 100m is normally required.

Water pipelines are normally placed underground and routed

along roads and road sides.

If possible, we should provide adequate distance of water

pipelines from power cables, gas pipelines, sewer lines and

other services.

Do not lay water pipelines near the crest of a slope because of

the instability of slope which can cause leakage to pipelines.

In cases where the proposed development cannot be modified to

permit the siting of water mains outside this crest area, the ff.

actions should be taken:

The slope should be designed to the appropriate factors of

safety, taking into account the effects of possible water

leakage.

As an alternative, water mains can be housed within a sealed

trench, ducting system or sleeve drained to a suitable

discharge point at a surface drain or natural stream.

DRAINANGE

SERVICES CONSIDERATIONS IN URBAN PLANNING

Sewage should be

collected and conveyed in

enclosed conduits which

should normally be placed

underground.

Sewers could be located

under the carriageways,

footpaths, cycle tracks

or amenity strips. If this

is not feasible, separate

drainage reserves should

be provided.

Storm water may be collected and conveyed either in enclosed

drains or open channels.

When choosing the alignment of drainage channels, account

should be taken to minimize disruption to adjacent communities

and minimize land resumption/reopening.

Landscaping should be considered and incorporated in the design of

Storm water drainage system to blend in with the environment.

Supporting drainage

facilities such as

channel

embankments may

be permitted to be

used as amenities or

recreational areas

and access roads as

waterfront

promenades

Polder Drainage and Floodwater Pumping

Schemes are necessary to render flood protection

to villages in low-lying areas.

The Storm Water Drainage System Plan and Design must

include the construction of floodwater pumping station,

floodwater storage pond, and flood protective bund or

wall around the villages and floodwater storage pond.

Flood Protection

Flood Water Pumping Facility

Floodwater storage ponds should be located at the lowest

areas of the site. They should either be covered or

properly fenced off for safety reasons. Under no

circumstances should public access routes be allowed

through the areas of the floodwater storage ponds.