1.0 PERFORMANCE OF MAWASCO

Various parameters were used to assess the Performance of the Company.

The details are as below:-

1.1. Total Registered Connections

As at March, 2007, there were 780 connections which were growing at an average of

about 0.39% per month. Of this connection, only 580 are metered and the rest are

billed on flat rate.

1.2. Metering Ratio

The metering ratio is estimated at 74.36%.

1.3. Water Production

An average of 663m3/day (19,886m3 per month) is produced against an estimated

water demand of 4,595m3/day.

1.4. Unaccounted for Water (UFW)

The UFW is estimated at 29% since of 663m3/day of water produced, 368m3/day

reaches the consumer and is billed for revenue.

1.5. Revenue Collection Efficiency

An average of Kshs 214,054 is collected per month as revenue. The Revenue

collection efficiency is estimated at 77% since of an average Kshs 286,881 billed only

Kshs 214,054 is actually collected.

1.6. Cost of Production

The unit cost of producing water is estimated at Kshs 37.75.

1.7. Sustainability

The water production and supply is unsustainable since the cost of producing 1m3 of

water is Kshs 37.75 against an average revenue of Kshs 20. In view of the foregoing,

the tariff requires to be adjusted by about 89% upwards to make the supply

sustainable.

1.8. Constraints and Challenges

·        The Water Supply is not sustainable

·        There is no alternative source of water

·        Most facilities have surpassed there lifespan

·        The company is thinly staffed since 75% of the required staff are unavailable

·        The water catchments have been degraded. This has increased the silt load

into the dam

·        The dam is silted by almost 50%

·        The change in climate has affected the rainfall pattern which has in turn

affected water levels since the dam depends on rainfall for replenishment

·        The screens in the intake tower are not working

·        There is a big threat to the main source of Maralal water supply since the dam

faces encroachment and pollution from Nomotio village

·        The water supply is not enough and the coverage is estimated at only about

14.4%.

2.0 DEMAND ANALYSIS

The current total water demand is estimated at 4,546m3/day. This is set to increase to

4841, 9227 and 17,059m3/day by the years 2008, 2018 and 2028 respectively.

Table 7.1 below details the demand according to user category:-

Current State Analysis

Maralal water supply is within Maralal township of Samburu District. At present the

supply has its source in Nontoto earth dam whose design capacity is 230,000m3 and a

catchments area of 62 km2. The Dam was constructed in 1984 by DCU and was

completed in 1986 and the design population was 5000 people.

Maralal town and its environs have been experiencing erratic water supply due to

inadequate investment, resources and an old production, transmission and reticulation

system. The existing water supply does not serve the whole of MAWASCO service area

as per the SPA with the licensee as it caters for only three sub-locations namely: -

Maralal town, Shabaa and Milimani which constitute the supply limit. Implementation of

Maralal water supply phase II as proposed in the Samburu District Development Plan

1997-2001 is long over due.

The average monthly water production is 26,537m³ against average monthly demand of

63,840m3 meeting only 42% of the demand. Maralal water supply is clustered among

Loikas, Shabaa, Ledero, Lepartuk and Nkeju Emuny boreholes.

Type of Use 2007 2008 2018 2028

Domestic 3,949 4,205 7,894 14,818

ECD 101 107 202 378

Primary 205 219 411 771

Secondary 0 0 0 0

Health 85 91 309 319

Commercial 206 219 411 772

Total 4,546 4,841 9,227 17,059

Table 7.1:- Summary of Total Water Demand Projection in m3/day

The source of this water supply is an earth dam whose design capacity is 230,000m3 and

which was lastly desilted in the year 2000. The reservoir is prone to siltation from its

catchment which has been encroached upon severely thus not serving to its full potential.

There are two (2) surface pumps through a 1.1km, 8” raising main pump water to Maralal

water supply treatment works. Currently the treatment works system is able to process

850m3/day. The filtrations units filter media is old and ineffective chemical stirrers, dozer

and pumps are also functioning ineffectively.

A total of 10km long distribution network comprising of PVC and GI pipes conveys

water from the treatment works to the consumer points. 1.3Km 200mm PVC draws the

clear water from the reservoir tank at the treatment works and reduces to a 0.8Km and a

8Km 150mm and 100mm PVC class E respectively. The network has been installed in

the supply area in 1986. The main distribution lines and appurtenances working

conditions have deteriorated considerably causing frequent pipe bursts.

There are 5 storage tanks located in Maralal water supply treatment works compound.

• 1 No. balancing tank of 850m3
• 2 No. underground masonry tank of 90m3 each
• 1 No. underground masonry tank of 45m3
• 1 No. P.S.E tank of 85m3

Pressure building tanks along the distribution lines are either in poor condition or nonexistent.

The raising main of PVC 150mm class E runs from main pumping station at

Nontoto Dam (source) to Maralal water supply treatment works and the Dam intake were

constructed in 1986 and has since out lived its lifespan and thus prone to recurrent pipe

bursts.

Average monthly un-accounted for water is 40-50% against the allowable range of 20-

30%. This is due to lack of bulk, zonal and consumers meters and rampant leakages and

pipe bursts.

Due to the past disturbances brought about by tribal clashes within the area, it is difficult

to determine the population within the company jurisdiction area with certainty. Based

on the 1999 census however, projected population estimate for initial, future and ultimate

stages were determined by applying the compound growth rate formula and using an

average growth rate of 5.2%.

The figures presented below are projected on a 10 years and 20 years basis for future and

ultimate water demand requirements.

Water demand computation in m3/day is based on projected population data. Basic

consumption rates stipulated in the ministry of water and irrigation design Maralal 2005

have been applied.