RP-01638

Table 2. Well construction and rehabilitation
targets for the Ministry of Public Works (MPW)
and the Rural Waterworks Development
Corporation (RWDC).
Year
Shallow
wells
Deep
wells
Rehabilitation
1980 10000 1691 1274
1981 13000 5000 2000
1982 45000 13000 2500
1983 40000 14000 2500
1984 41000 15000 2500
1985 16000 15000 2500
1986-1990 4000 23800 12500
Source: Government of Philippines. 1980. Integrated
water supply program, 1980-2000; and RWDC - The
Philippines rural water supply program.
the country will have approximately 200 000
shallow wells and 110 000 deep wells. If all the
shallow wells and 70% of the deep wells are
located in the rural areas, each shallow well
will be used by about 17 households and each
deep well will cater to about 50 households.
Thus, for a target of one shallow well for
every five households, there will be a need for
an additional 480 000 shallow wells by 1990.
Malaysia
After extensive laboratory investigations,
nine suction, two pressure-suction, one
pressure-lift, and five lift pumps were
fabricated and installed in two rural areas -
Kuala Pilah and Ipoh. These pumps have been
field tested for over 1 year, and no major
problems have been encountered so far. All
of them are still functioning, and from preliminary
observations, it appears that the
villagers are satisfied with their performance.
The major distinctive features of these pumps
include: a PVC cylinder fitted with a sliding
PVC piston and a stationary, but removable,
PVC foot valve; and a leverage system consisting
of timber linkages and galvanized iront
oil-impregnated timber bearings.
These PVC handpumps were installed in
existing wells that had handpumps that were
condemned from further use. The wells
averaged 30 feet (9 m) deep and the water
depth was usually 10-23 feet (3-7 m) below
the ground. Each handpump served a cluster
of four to five households. The pressuresuction
and pressure-lift pumps, however,
had individual household connections to each
of the four or five households. Thus, every
user could pump the water directly into a
water tank installed at their own house.
Economic analysis
A financial analysis was conducted to
compare the cost of the PVC pump (both
experimental cost and projected production
cost) with the cost of the two existing pumps
(Gibson and Fuji).
The results of this analysis showed that the
present worth and equivalent cost of the PVC
pump were lower than the existing pumps
(Table 3). This difference was especially significant
when the cost of the PVC production
model was compared with the cost of the
existing handpumps. Using the presentworth
and annual-equivalent-cost concepts,
the cost of the PVC production model was
Table 3. Summary of various measures of pump
cost (US$).
Type of Capital Present Annual
pump cost worth equivalent cost
Gibson 31 148.11 79.74
Fuji 61 155.48 28.40
IDRC
Experimental 134 145.72 27.33
Production 74 85.72 15.99
Note: The analysis for present worth and annual
equivalent cost is based on the format prepared by
J. Majumdar and discussed at the mid-project meeting in
August 1980 (Goh 1980).
Table 4. Basic information on handpumps (1980
constant dollars).
IDRC models'
Experi- Produc-
Item Gibson Fuji mental tion
Installation cost°
Material 85 85 85 85
Labour 49 49 49 49
Transport cost` 1 1 1 1
Pump and coupling 30 60 133 73
Installed capital cost 31 61 134 74
Annual repair cost' 9 9 2 2
Period of operation
(years) 0.5-2.5 3-5 7-9 7-9
Economic life (years) 2 4 8 8
Rate of discount (%) 10 10 10 10
Salvage value at end
of year 0 0 0 o
'A breakdown of the major cost components of both
models is given in Table 5.
'For a 30-foot (9-m) well, the costs are: auger, $18; labour
(14 days at $3.50 per day), $49; cernent, $10; and casing
and pipe, $57. These costs are the saure for all pumps.
`Assuming a distance of 62 miles (100 km) from port and
that the pumps are transported in bulk. The total fixed
costs, including installation, are: Gibson, $165; Fuji, $195;
IDRC experimental, $268; and IDRC production, $208.
'Repair cost is for parts only. Assumed that labour is provided
by either the user or the government.
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