NOVEMBER 2018 PLANNING REPORT FOR THE EYE OF AFRICA DEVELOPMENT TO MIDVAAL LOCAL MUNICIPALITY FOR A PROPOSED RESIDENTIAL DEVELOPMENT ON PORTION 37 AND 38 EIKENHOF, FOR EYE OF AFRICA DEVELOPMENTS

Nathoo Mbenyane Engineers (Pty) Ltd. Dhiren Jogi Tel (w): 011 433 0701

Mobile:NME-November 083 2018 779 1504 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 1 TABLE OF CONTENTS 1 EXECUTIVE SUMMARY ...... 3 2 PURPOSE OF REPORT ...... 4 2.1 Legal framework and mandate...... 4

2.2 City’s By-Law for water demand and sanitation planning ...... 5

2.3 Increase in development ...... 7

2.4 Water Provision ...... 10

2.5 Wastewater Provision ...... 12

3 PROJECT BACKGROUND...... 14 3.1 Project Location ...... 14

3.2 Existing Water Supply ...... 15

3.3 Existing Sanitation Capacity ...... 15

4 WATER SUPPLY DEMAND & SANITATION CAPACITY REQUIREMENT 16 4.1 Design Guidelines ...... 16

4.2 Water Supply Demand for Development ...... 16

4.3 Sanitation Capacity Requirement ...... 17

5 RECOMMENDATION ...... 19 APPENDIX A. SITE LOCATION AND LAYOUT MAP ...... 20 APPENDIX B. SITE LAYOUT PLAN ...... 21

NME-November 2018 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 2 1 EXECUTIVE SUMMARY

The Midvaal Local Municipality is part of Sedibeng District Municipality. The Midvaal Local Municipality is a Category B municipality situated within the Sedibeng District in the south of the Province. The City of Ekurhuleni and City of Johannesburg Metropolitan Municipalities are situated to the north. It is bordered by the Free State Province to the south and the Mpumalanga Province to the east. It is the biggest municipality of three in the district, making up almost half of its geographical area.

The Eye of Africa, one of the formable developments in the Western Region of Midvaal municipality is seeing strong economic activity as a result of its scenic quality due to the hillock range and a middle-high income rural lifestyle type of residential development.

Accordingly, new further phases to the estate is being proposed to be developed. In order for these new phases to be approved, the municipality has to ensure that there is adequate water and sanitation capacity provided for the next phase of the Eye of Africa development.

This report is by no means a design report and can be considered as a work document with the intention to obtain comments and possible other proposals to service delivery. The Midvaal Municipality needs to make a water supply provision of an additional 1.35Ml/day to the area and for a 1.0Ml/day on-site package plant to treat the wastewater that will be generated for this new phase.

NME-November 2018 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 3 2 PURPOSE OF REPORT

The purpose of this report is to present to Midvaal Local Municipality the water demand and sanitation capacity requirements for the proposed new development phase to the Eye of Africa Golf Estate development. The new phase is proposed on 35ha site, comprises of 280 new stands of average size varying from 700m2 to 900m2. In order for this planned development to proceed to the implementation stage, the necessary bulk water and sanitation requirements need to be assessed and approved by the municipality.

This report will address both the bulk water and sanitation requirements for the development and recommend the water demand and sanitation capacity required for a package plant to be sited at the lower end of the property development.

2.1 Legal framework and mandate

The Constitution of the Republic of (1996) stipulates that the local sphere of government consists of municipalities which were established for the whole South Africa, the so-called wall-to- wall municipalities. The objectives of local government are set out in

Section 152 of the Constitution as follows:

 To provide democratic and accountable government for local communities;

 To ensure the provision of services to communities in a sustainable manner;

 To promote social and economic development;

 To promote a safe and healthy environment; and

 To encourage the involvement of communities and community organisations in the matters of local government.

In order to realise the above, the Municipal Systems Act, 2000 (MSA) was enacted. Chapter 5 of the MSA states that a municipality must undertake developmentally oriented planning, in the form of

NME-November 2018 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 4 integrated development planning, to ensure that it achieves the objects of local government as set out in the Constitution. It must further give effect to its developmental duties as required by Section 153 of the Constitution.

According to Section 25 of the MSA each municipal council must, after the start of its elected term, adopt a single, inclusive and strategic planning (IDP) for the development of the municipality which links, integrates and co-ordinates plans and takes into account proposals for the development of the municipality and which aligns the resources and capacity of the municipality with the implementation of the said plan

2.2 City’s By-Law for water demand and sanitation planning

As with all municipalities in South Africa, approval of developments a subject to the local by-laws. These by-laws set out the proceeds to be followed and documents required for both water and sanitation applications.

Below is the detail requirements for a water service application as set out in Midvaal Municipality’s by-law.

1. No person shall gain access to water services from the water supply system, sewage disposal system or through any other sanitation services unless he or she has applied to the municipality or its authorised agent on the prescribed form for such services for a specific purpose and to which such application has been agreed.

2. Where a premises or consumer are provided with water services, it shall be deemed that an agreement in terms of Sub-Section (1) exists.

3. An application agreed to by the municipality or its authorised agent shall constitute an agreement between the municipality or its authorised agent and the applicant, and such agreement shall take effect on the date referred to or stipulated in such agreement.

NME-November 2018 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 5 4. A consumer shall be liable for all the prescribed tariffs and / or charges in respect of water services rendered to him or her until the agreement has been terminated in accordance with these bylaws or until such time as any arrears have been paid.

5. In preparing an application form for water services the municipality or its authorised agent will ensure that the document and the process of interaction with the owner, consumer or any other person making application are understood by that owner, consumer or other person. In the case of illiterate or similarly disadvantaged persons, the municipality or its authorised agent will take reasonable steps to ensure that the person is aware of and understands the contents of the application form.

6. Water services rendered to a consumer are subject to the provisions of these bylaws and the conditions contained in the relevant agreement.

If a municipality or its authorised agent refuses an application for the provision of water services, is unable to render such water services on the date requested for such provision of water services to commence or is unable to render the water services the municipality or its authorised agent will inform the consumer of such refusal and / or inability, the reasons therefore and, if applicable, when the municipality or its authorised agent will be able to provide such water services.

With regards to the sanitation by-laws, the municipality sets out the following requirements for compulsory drainage of buildings.

1. (a) Where in respect of any building a suitable means of disposal of waterborne sewage is available the owner of such building shall provide a drainage installation.

(b) Where there is no such means of waterborne disposal sewage shall be disposed of in accordance with Part Q (National Building Regulations (Act 103 of 1977)).

2. Where a sewer is available for the drainage of such building, the owner of such building shall, at his own cost, lay alter of extend any drain serving such building to terminate at a location and level as prescribed by the local authority for the connection to such sewer.

NME-November 2018 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 6

3. Where a connecting sewer has been provided to any site the owner of such site shall cause all sewage discharged from any building on such site to be conveyed by a drain to such connecting sewer.

4. Where the owner of such building has failed to lay, alter or extend any drain in terms of sub- section 2(2) the local authority may, at the cost of such owner, lay, alter or extend such drain; provided that the local authority shall, before carrying out such work, give not less than 14 days’ notice to such owner of its intention to carry out such work.

5. Any owner who fails to comply with the requirement contained in sub-section 2(1) or 2(2) shall be guilty of an offence.

In addition to these by-laws the Water and Sanitation Master Service Plan guides the municipality’s decision making for any new developments within its area of jurisdiction. The new proposed Eye of Africa phase development would therefore need to adhere to the above requirements before it can be assessed and approved for implementation.

2.3 Increase in development

The population growth in Midvaal has been consistent, with the current population as at 2016 given as 111 612 people, growing from a base of 95 301 since 2011. Figure 1 below shows that the number of households have also grown significantly from a base of 29 964 to 38 046 as at 2016.

NME-November 2018 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 7

Figure 1 : Population Growth & Households in Midvaal

The population growth in Midvaal has been localised to the areas in close proximity to the R59, as illustrated in the population density map indicated in Figure 2 below. The remaining portions of the municipal area have relatively low density, with concentrations increasingly reaching the border with the Emfuleni municipality.

NME-November 2018 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 8

Figure 2 : Population density in Midvaal

NME-November 2018 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 9 The Central Region of the development zone is the most advanced economic region in the Midvaal, partially because is located in close proximity to the R59 Development Corridor. It offers the best mobility and distribution opportunities for goods and services and as a result plays an important role in the Midvaal local economy. It is further the region with the highest population number, population density and most diverse economic structure. This region, however, has very little aesthetic value and high concentrations of air pollution.

The Western Region is well situated with regard to the smaller R82 Development Corridor and as a result, shows strong economic potential. The Western region is however in close proximity to the economic powerhouses of Emfuleni and the southern part of the City of Johannesburg, creating strong competition for market investments. The Western Region has a scenic quality due to the hillock range and a middle-high income rural lifestyle type of residential development. Moreover, the presence of the Eye of Africa golf estate and equestrian estates in the region further add to the aesthetic beauty of the region.

The Eastern region has an aesthetic rural charm that favors tourism and agricultural activities, which are currently underdeveloped. The current challenge in developing these regions is high levels of air and water pollution, which affects the aesthetic appeal of the region.

2.4 Water Provision

Approximately 38 046 households are provided with potable water from the two bulk potable water purification works namely, Vaal Marina Water Purification Works owned by Midvaal Local Municipality and Zuikerbosch Water Purification Plant owned by Rand Water Board. Raw water is extracted from the Vaal Dam and Vaal River respectively and pumped into the two water purification works. Midvaal has appointed Rand Water to operate the Vaal Marina Purification Works on its behalf. The Vaal Marina Water Purification Works has a design capacity of 10 mL/day and is currently operating within its design capacity, with the peak demand within the average of 2 mL/day.

The Rand Water Zuikerbosch Plant delivers an average of 30 mL/day to Midvaal, Meyerton Water Supply Scheme as per the service level agreement which is used to evaluate the performance of the service provider. Purified water is pumped into different reservoirs owned by Midvaal Local Municipality and reticulated to households through pipelines. All households within developed urban

NME-November 2018 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 10 and peri-urban areas are supplied through a water meter, which is used to determine the quantity of water consumed by the particular household. Informal settlements that are not reticulated, receive water through the mobile water tankers and public stand pipes. Plastic tanks, positioned around the settlements, are used as a storage point for the informal settlements communities to fetch water. Bigger informal settlements storage tanks and standpipes are supplied through direct metered water pipelines, connected to the water network.

Midvaal’s current figures for water provision per sector is reflected in Figure 3 below.

Figure 3: Provision of water per sector and current water use

Although there are many farm portions in the municipal area, most of them are not connected to municipal water network and use own boreholes or connected to Rand Water pipelines. The water allocated to agriculture is thus low. The biggest portion of the water demand is evenly spread between domestic and industrial. Water demand for both of these sectors will rise in the near future seeing that there are plans for both industrial and housing developments, especially on the R59 Corridor, Savanna City and Eye of Africa Developments. The increase in water demand is however currently being challenged by the erratic weather conditions due to climate change.

NME-November 2018 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 11 2.5 Wastewater Provision

There are 22 060 households with flush toilets connected to a water-borne system infrastructure sewerage system. Waste water is collected from households that are connected to the system through the reticulation pipelines into different smaller sewer pump stations around Midvaal.

These pump-stations are pumping into the main sewer pump- station which is Rothdene Sewer Pump-station that pumps to the Meyerton Waste Water Treatment Works (WWTW). There are approximately 35 sewer pump stations within Midvaal and their conditions differ from fair to good. The Rothdene Pump-station was refurbished during the 2017/2018 financial year.

There are four waste water treatment works within Midvaal:

 Meyerton Waste Water Treatment Works;

 Vaal Marina Waste Water Treatment Works;

 Ohenimuri Waste Water Treatment Works; &

 Eye of Africa Waste Water Treatment Works

Meyerton WWTW is the largest in the municipality and has a design capacity of 10 mL/day. The works is currently being upgraded to 25 mL/d capacity. It services the areas of Meyerton, Daleside, Sicelo, Meyerton Farms, Rothdene, , Riversdale, Rust ter Vaal/Roshnee (Emfuleni). The plant currently treats an average dry weather flow of 8.71 mL/day and 12 mL/d average wet weather flow. A total of 3 155 523 kL (3 155 mL/annum) is currently being treated and there is currently unacceptably high levels of COD, Phosphates, Ammonia, etc. that is discharged into the Fourie Spruit.

Ohenimuri WWTW has a design capacity of 0.5 mL/day. It services the areas of Walkerville. The plant is operating within its design capacity. The plant is in a fairly health state and it is complying with the prescripts of Department of Water & Sanitation (DWA) for waste water effluent.

NME-November 2018 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 12 Vaal Marina WWTW has a design capacity of 2 mL/day. It services the areas of Vaal Marina. The plant is operating within its design capacity. The plant is in fairly health state, but it is not complying with the prescripts of DWA for waste water effluent due design capacity challenges. A total of 44 156 mL (44 mL/annum) is currently being treated with an average dry weather flow of 0.2 mL/d. The plant is also in process of upgrading.

Eye of Africa WWTW has a design capacity of 1.5 mL/day. It services the Eye of Africa Development which is situated west of the R59, South of the R550 and east of the R82. The plant is operating within its design capacity.

NME-November 2018 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 13 3 PROJECT BACKGROUND

The Eye of Africa Development is an existing development within Midvaal. The development has gain tremendous interest amongst the middle and high income population within the region and shows significant growth from its inception. As a result of the growth and demand for residential property in this area, additional phases have been proposed to the Eye of Africa Development. The new phase comprises of 280 sites with stand sizes varying from 700m2 to 900m2.

However, in order for the proposed new phases to be approved, adequate provision for water and sanitation needs to be provided for by Midvaal Municipality.

3.1 Project Location

The Eye of Africa development is located South of Johannesburg, with the site being boarded by Klipriver Road on the west and the R82 Road to the North and East. The co-ordinates of the site is 26o22’17.38” S and 28o01’13.14” E.

NME-November 2018 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 14 3.2 Existing Water Supply

The water supply to Eye of Africa development is currently being supplied off a Rand Water Bulk line. This water is pumped to a 4ML reservoir which then gravity feeds into the water reticulation system. However the new additional phases to the development will increase the demand for water to this area and a new reservoir will be required in order to allow for a 48 hour demand. Midvaal in its planning will need to assess the increase for water demand for the additional phases to this development.

3.3 Existing Sanitation Capacity

The current wastewater from the development is being processed by a 1.5Ml Package Plant. The grey water is pumped into mini dams within the development and this grey water is used to irrigate all landscaped areas.

Due to the topography of the site, the developer has opted not to pump the wastewater from the new phase to the existing package plant. The new Package plant will be constructed approximately south east of the development existing development at AMSL 1612m.

The capacity of the plant will be designed to accommodate the proposed new development requirements and any other future phases.

NME-November 2018 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 15 4 WATER SUPPLY DEMAND & SANITATION CAPACITY REQUIREMENT

4.1 Design Guidelines

The Design of the proposed services will be based on the following:

• The guidelines for the Provision of engineering Services for residential townships by the former Department of Community Development.

• Township Sewer Design Standards/Procedures by the City of Johannesburg Wastewater Department.

• Design Manual: Guidelines and Policy for the design of storm-water drainage and storm-water management systems.

4.2 Water Supply Demand for Development

The water demand calculations for the 280 sites was determined to be in the very high development level category and therefore the water demand of 1 350l/erf/day was determined using the average stand area of 800m2.

The following design criteria have been used:

 Average Annual Daily Demand(AADD) Res 1 : 1200-1500 l/day/unit

 Demand for this Development : 1350 l/day/unit

 Water Losses : 10%

 Daily Peak Factor : 3.0

 Fire Risk Category : Moderate

NME-November 2018 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 16 The water demand for the proposed development is:

 No Of Units : 280 @ 1350l/day

 Daily Demand (l/d/unit) : 391 500 l/day

 Peak Daily Demand : 1 134 000 l/day

 Water Losses : 113 400 l/day

 Total Peak Demand : 1 247 400l/day

 Peak Demand (l/s) : 14.43 l/s or 867 l/minute

 Design Peak Demand (l/s) : 16.59 l/s or 996 l/minute

The peak demand flows requires a minimum 171.16mmØ pipe for the internal reticulation. We propose the use of a 200mmØ pipe for the development. The 200mmØ pipe at 100% or 67% will provide a capacity of 25.12l/s or 24.36l/s which is higher than the required capacity of 16.59 l/s.

Using the average water demand of 1 350l/erf/day and the peak factor of 3, the calculations above indicates that a peak water demand value of 1 247 400l/day or 1.25Ml/day is required for the new development phase.

4.3 Sanitation Capacity Requirement

Table 4.3.1 Minimum slopes:

Minimum sewer gradients Sewer diameter (mm) Minimum gradients (mm) 100 1 : 120 150 1 : 200 200 1 : 300 225 1 : 350 250 1 : 400 300 1 : 500

Table 4.3.2 Design Criteria

NME-November 2018 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 17 The following design criteria have been used:

 No. of Units : 280

 Average Erven Size : 800m²

 Design Flow (Residential 1) : 1200 l/d/unit (336 000 l/d)

 Peak factor (Jhb Water Guidelines) : 2.5

 Infiltration : 15% - (2.25 l/s)

 Peak Design Flow : 996 000l/s (11.18l/s)

 Minimum velocity : 0.91m/s

 Maximum Velocity : 2.5m/s

 Design flow : 67%

 Peak Design flow Rate : 11.18 l/s

 Manning ‘n’ : 0.012

 Calculated Pipe Size : 155mmØ

 Design Pipe Size : 200mmØ

As per Table 4.3.1 in the guidelines, the average daily flow was determined using the higher income group value. The value of 1000l/du/day was used and increased to 1200l/du/day as it was considered to be very conservative for sanitation flow for this type of development. A peak factor of 2.5 and an extraneous flow of 15% was applied to determine the required sanitation capacity requirement.

The calculations above indicate a peak design flow of 966 000l/day or 0.96Ml/day. Therefore a 1Ml/day plant would adequately accommodate the expected peak flows for the new development. At the lowest section connecting into the package plant, a 200mmØ pipe will adequately handle peak flows. The 200mmØ pipe, at a capacity of 67% volume will be able to handle 24.37l/s versus the peak design flow rate of 11.18l/s.

NME-November 2018 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 18 5 RECOMMENDATION

The above water demand and sanitation capacity calculations indicate that for the approval of the proposed 280 sites for the new phase of the Eye of Africa development, the Midvaal Municipality needs to make a water supply provision of an additional 1.35Ml/day to the area and for a 1Ml/day on-site package plant to treat the wastewater that will be generated.

However, it is further recommended that the municipality should consider increasing the on-site package plant capacity to 1.5Ml/day to accommodate the future phases to the Eye of Africa development.

NME-November 2018 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 19

APPENDIX A. SITE LOCATION AND LAYOUT MAP

NME-November 2018 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 20

APPENDIX B. SITE LAYOUT PLAN

NME-November 2018 Eye of Africa - Water Demand and Capacity for On-Site Package Plant for Portion 37 and 38, Eikenhof 21