ZINWA To Drill 35,000 Boreholes For Irrigation and Drinking Water in 4 Years

A new project in Zimbabwe aims to improve water supply from groundwater. The Zimbabwe National Water Authority (ZINWA), which is implementing the project, will drill a total of 35,000 boreholes.

Zimbabwe is facing a persistent drought. The main consequence is a decrease in river flows with a direct impact on the level of filling of dams, as well as water supply for consumption and irrigation. In response to water stress, the Zimbabwean government is focusing on groundwater resources and aims to have 35,000 boreholes drilled by 2025.
ZINWA To Drill 35,000 Boreholes For Irrigation and Drinking Water in 4 Years
ZINWA To Drill 35,000 Boreholes For Irrigation and Drinking Water in 4 Years

Each village with a population of 35,000 will have a borehole. The installations will be carried out by the Zimbabwe National Water Authority (ZINWA). The freshwater will be used to irrigate fruit, vegetable and other crops. “Our aim is to cover 350,000 hectares of land through irrigation, rehabilitation and maintenance of existing structures improving agricultural yields,” explains Marjorie Munyonga, ZINWA’s communications and marketing manager. The future boreholes will also provide water for livestock and domestic consumption.

The Zimbabwean government agency will roll out the water project in several phases. In its first phase, the boreholes will provide water for the irrigation of 500,000 plants in several villages in the East African country. This phase of the project will be completed by the end of December 2021 at a total cost of over US$119 million. At least seven “state of the art” nurseries will also be developed.
Rationalization of available resources

Details on the other phases of the project will be unfolded as the work progresses, Zimbabwean authorities say. Ultimately, the project will enhance the socio-economic potential of rural communities and create opportunities for upstream and downstream industries in the horticultural sector. To achieve these objectives, rational use of available groundwater resources is also necessary. For example, focus on drip irrigation. 

This system pours the water very precisely on the crop, which results in an optimal yield. 
This process saves water, unlike flood or submergence irrigation. 
These are avenues to be explored to avoid resource depletion.

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Five Facts About Borehole Drilling That You Need To Take Note Of:

1. Know Your Borehole Casings:The Preferred Borehole Casing In Zimbabwe Is Class 9 and 10 (Pressure Classes.)This is because Class 9 and Class 10 Casings are more collapse resistant. The strength of a Casing is often described as collapse resistance.

2. Borehole Drilling Depth: The exact depth, of where the water is located, cannot be established by the drilling contractor nor the Water Surveyor (Borehole Siter).

3. The Is No 100% Guarantee On Water: It is important to note that it is never a 100% guarantee that any hole will yield water, the amount and water quality can also not be guaranteed by the drilling contractor and water surveyor.

4. Borehole Siting or Water Surveying Is Important: Making use of a hydrologist or traditional water diviner will increase your chances of having a successful borehole that will yield a sufficient amount of water.

5. Know The Risks: The risk of the borehole drilling lies with the property owner. The client will still be liable for the drilling costs irrespective of a borehole yielding water or not.

The Cost or Prices For Borehole Drilling in Zimbabwe:

1. Siting: $100.00USD
2. Drilling and Casing: (40 Metres) $1300.00USD - (Using Class 6)
3. AC Electrical Installation: $1000.00USD
4. Solar Pump Installation: $1400.00USD
5. Extra Metres After 40 Metres: USD $45.00USD per metre.
6. 5000 Litre Tank and 4 metre Tank Stand: $1000.00USD
7. Stuck Pump Fishing Out: $180.00USD
8. Capacity Testing: $250.00USD

- Casing with Class 9 Casing incurs an additional $200.00USD.
- Double Casing: $20.00USD per metre.

Note this is the average price borehole companies charge for their services in Zimbabwe, but this figure is subject to changes if conditions are different depending on the construction site.

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