Backlog

Definition

Units

Bulk Services: Geo-hydrological Investigation

A backlog is represented by the following:

1. Lack of a study of the movement, distribution, and quality of water.

Number of Boreholes

Bulk Services: Boreholes

A backlog is defined as households located in small remote communities where even basic schemes are costly, where support services are difficult and where affordability is very limited and have no access to a point source of water supply such as boreholes (drilled hole used to abstract, recharge or monitor groundwater.)

Number

Bulk Services: Reservoirs

A backlog is defined as:

1. Households provided with water (either from natural or man-made reservoirs) but it is not enough to meet their demands. Hence these leads to a need to build or secure another reservoir to accommodate all households.

2. Households provided with water either from an existing natural or man-made reservoirs but needs to be rehabilitated.

Number

Bulk Services: Water treatment plants

A backlog is defined as:

1. Households receiving water pumped from wells, rivers, streams and reservoirs to the water treatment plants but it is not treated according to the accepted standards (chemical processes such as disinfection or coagulation or biological processes such as lagooning or slow sand filtration or activated sludge) and it is distributed to the customers. Therefore, The treatment of water is not acceptable for a desired end-use which can include discharge into the environment.

2. Households receiving water from wells, rivers, streams and reservoirs but have no water treatment plants.

Number

Bulk Services: Pump stations

A backlog is defined as:

1. Households located in areas not far from the wells, rivers, streams and reservoirs but do not have pump stations to draw water from the source to the water treatment plants to be treated and distributed to the customers.

2. Households located in areas not far from the wells, rivers, streams and reservoirs but have pump stations which are not functional to draw water from the source to the water treatment plants to be treated and distributed to the customers.

Number

Bulk Services: Raw water storage dam

A backlog is defined as:

1. Households without any form of raw water (untreated water) storage dams (a barrier across flowing water that obstructs, directs or retards the flow, often creating a reservoir, lake or impoundment of untreated water) where water can be stored for further treatment and consumption by all.

2. Households with raw water storage dams but needs to be rehabilitated.

Number

Connector Services: Supply lines

A backlog is defined as:

1. Lack of connections or distributors of fresh or drinking water through piping water mains from storage to consumption.

2. Existing connections or distributors of fresh or drinking water through piping water mains from storage to consumption needs rehabilitation.

Km

Connector Services: Pump stations

A backlog is defined as:

1. Households located in areas not far from the wells, rivers, streams and reservoirs but do not have pump stations to draw water from the source to the water treatment plants to be treated and distributed to the customers.

2. Households located in areas not far from the wells, rivers, streams and reservoirs but have pump stations which are not functional to draw water from the source to the water treatment plants to be treated and distributed to the customers.

Number

Connector Services: Reservoirs

A backlog is defined as:

1. Households provided with water (either from natural or man-made reservoirs) but it is not enough to meet their demands. Hence these leads to a need to build or secure another reservoir to accommodate all households.

2. Households provided with water either from an existing natural or man-made reservoirs but needs to be rehabilitated.

Number

Reticulation: Stand pipes

Service levels 1 and 2 represent the backlog:

1. No reticulation;

2. Public standpipes below RDP standard, i.e. more than 200 meters from the dwelling;

3. Public standpipes within 200 meters of the dwelling which is taken to the RDP standard;

4. Yard tanks: a storage tank with approximately 200 litres of water in the yard adjacent to the dwelling, which is filled via water reticulation every day;

5. Yard taps: a metered water supply delivered to a single tap in the yard adjacent to the dwelling; and

6. House connections: a metered water supply, which is piped into the house, typically with several taps. A water supply backlog is defined as below basic service level, which is inclusive of ‘no reticulation’ and ‘standpipes more than 200 meters from the dwelling’.

Households

Reticulation: Water meters

A backlog is represented by the following:

1. Lack of a device that measures the quantity of water used.

Number

Reticulation: Pipe lines

A backlog is represented by the following:

1. Lack of water pipelines (a conduit made from pipes connected end-to-end for long-distance fluid transport) to transport surface or ground water from one area to another area (Water pipelines are large in diameter and can supply water to communities and industries over both short and long distances) without causing erosion and reducing the chance of evaporation.

Km