, HES4810
ASSIGNMENT 3 2026
DUE SEPTEMBER 2026
QUESTION 1: Water for People and Progress [20]
1.1 Legislative Instruments for Water Resource Protection and Security
The Constitution of the Republic of South Africa, 1996 serves as the foundational legal instrument
enshrining the right to water. Section 27 of the Constitution guarantees everyone the right of
access to sufficient water, while Section 24 establishes the right to an environment that is not
harmful to health or well-being (Republic of South Africa, 1996). This constitutional framework
elevates water security from a policy preference to a justiciable right, compelling the state to take
reasonable legislative and other measures to progressively realise this right (Republic of South
Africa, 1996). The Constitution further mandates cooperative governance through Section 41,
requiring all spheres of government to work together in ensuring water security, which is
particularly significant given the complex institutional landscape of water management in South
Africa (Republic of South Africa, 1996).
The National Water Act, 1998 (Act 36 of 1998) provides the substantive legal framework for water
resource protection. Central to the National Water Act is the concept of the "Reserve", which
represents the water quantity and quality required to satisfy basic human needs and protect
aquatic ecosystems (Republic of South Africa, 1998a). This dual protection mechanism ensures that
both human consumption and ecological integrity are prioritised before water is allocated for other
uses (Republic of South Africa, 1998a). The Act introduces a classification system for water
resources, establishing resource quality objectives that are binding on all authorities when
exercising powers under the Act (Republic of South Africa, 1998a). The National Water Act also
provides for pollution prevention and remediation measures through Chapter 4, requiring licensing
of water uses that may impact water quality (Republic of South Africa, 1998a). Significantly, the Act
promotes integrated water resource management through catchment management agencies
(CMAs), which coordinate water management at the local level (Republic of South Africa, 1998a).
The National Environmental Management Act, 1998 (Act 107 of 1998) complements the National
Water Act by establishing principles for environmental governance that are applicable to water
resources (Republic of South Africa, 1998b). NEMA requires that environmental impacts, including
those affecting water quality, be considered through environmental authorisation processes, which
serve as a preventive mechanism against water resource degradation (Republic of South Africa,
1998b). Section 2 of NEMA sets out the principles of sustainable development, including that
pollution and degradation of the environment must be avoided or minimised, and that the
precautionary principle must be applied (Republic of South Africa, 1998b). Furthermore, NEMA
establishes duty of care provisions that require any person who causes significant pollution to take
reasonable measures to remedy the effects, thereby reinforcing accountability for water resource
protection (Republic of South Africa, 1998b).
,Together, these three legislative instruments create an integrated framework: the Constitution
provides the rights-based foundation, the National Water Act operationalises water resource
management and protection, and NEMA ensures that environmental considerations, including
water impacts, are integrated into all development decisions (Republic of South Africa, 1996;
Republic of South Africa, 1998a; Republic of South Africa, 1998b).
1.2 Five Major Development-Related Pressures Affecting Water Quality Resources in Africa
1. Agricultural intensification and agrochemical pollution remains one of the most significant
pressures on African water resources. The expansion of commercial agriculture and increased use
of fertilisers, pesticides, and herbicides have led to widespread contamination of surface and
groundwater systems across the continent (UNEP, 2016). In South Africa, intensive agricultural
activities in the Vaal River catchment have contributed to eutrophication and elevated nitrate
levels in water sources (Department of Water and Sanitation, 2018). Similarly, in Kenya's Lake
Victoria basin, agricultural runoff has been identified as a primary driver of water quality
degradation, with significant impacts on aquatic biodiversity and fisheries (Odada et al., 2009).
2. Rapid urbanisation and inadequate wastewater infrastructure exert immense pressure on water
quality in African cities. The majority of African urban centres lack adequate wastewater treatment
capacity, resulting in direct discharge of untreated or partially treated sewage into water bodies
(UN-Habitat, 2020). In South Africa, the Blue Drop and Green Drop reports consistently highlight
the poor performance of municipal wastewater treatment works, with many failing to meet
effluent quality standards (Department of Water and Sanitation, 2022). The situation is equally
concerning in other African countries; for instance, in Accra, Ghana, only a fraction of wastewater
generated is adequately treated, with the remainder contaminating groundwater and coastal
ecosystems (Karikari & Ansa-Asare, 2006).
3. Industrialisation and mining activities represent a critical pressure on water resources,
particularly in countries with significant mineral extraction sectors. Acid mine drainage from
abandoned and operational mines in South Africa's Witwatersrand basin has resulted in severe
contamination of water sources with heavy metals and sulphates, threatening both human health
and aquatic ecosystems (McCarthy, 2011). Industrial effluents containing toxic chemicals, heavy
metals, and organic pollutants similarly degrade water quality in many African industrial zones
(Nyenje et al., 2010). In Nigeria's Niger Delta, petroleum extraction has caused extensive
contamination of freshwater and coastal water resources (UNEP, 2011).
4. Deforestation and land-use change significantly affect water quality through increased soil
erosion and sedimentation. Conversion of natural vegetation to agricultural or urban land uses
increases sediment loads in rivers, smothers aquatic habitats, and transports attached pollutants
into water systems (Schulze, 2011). In the Ethiopian highlands, extensive deforestation has
accelerated erosion rates, leading to sedimentation of Lake Tana and degradation of water quality
(Wondie et al., 2012). Similarly, in South Africa's Eastern Cape, degradation of catchment
vegetation has contributed to elevated turbidity and reduced water quality in critical water supply
systems (Department of Water and Sanitation, 2018).
, 5. Solid waste management challenges and marine litter increasingly threaten water quality across
Africa. Inadequate collection and disposal of solid waste results in leachate contamination of
groundwater and surface water sources (Hoornweg & Bhada-Tata, 2012). Coastal and marine
pollution from land-based sources, including plastic waste and inadequate sanitation, has emerged
as a growing concern for water quality in African coastal cities and ecosystems (UNEP, 2016). The
proliferation of illegal dumping sites and uncontrolled landfills contributes to the contamination of
both groundwater aquifers and surface water bodies, with significant implications for water
security and public health (Hoornweg & Bhada-Tata, 2012).
1.3 Climate Change Effects on Water Quality, Availability, Vulnerable Communities, and
Ecosystem Health
The Climate Change Act, 2024 requires risks to be considered in environmental planning and
decision-making (Republic of South Africa, 2024). Climate change may affect water systems in the
following ways:
Water quality is projected to deteriorate due to climate change through several mechanisms.
Increased temperatures promote algal blooms and eutrophication in water bodies, while
intensified rainfall events and flooding cause increased runoff of pollutants and sedimentation
(Intergovernmental Panel on Climate Change [IPCC], 2022). Reduced streamflows during drought
periods concentrate pollutants in remaining water volumes, further compromising water quality
(Department of Water and Sanitation, 2018). Changes in water temperature also affect dissolved
oxygen levels and the survival of aquatic organisms (IPCC, 2022).
Water availability is severely threatened by climate change in Africa. Projections indicate that parts
of Southern Africa will experience significant reductions in mean annual precipitation, while
increased evaporation rates driven by higher temperatures will further reduce water availability
(IPCC, 2022). Glacial retreat in East Africa's mountainous regions, such as Mount Kilimanjaro and
the Rwenzori Mountains, diminishes dry-season water flows that support millions of people (IPCC,
2022). Increased frequency of extreme events, including droughts and floods, exacerbates water
security challenges and complicates water resource planning and management (Department of
Water and Sanitation, 2018).
Vulnerable communities bear the greatest burden of climate impacts on water resources. Poor
communities, particularly in rural areas and informal urban settlements, often lack access to safe
water and sanitation and have limited adaptive capacity to respond to water-related climate shocks
(United Nations Development Programme [UNDP], 2020). Women and children are
disproportionately affected, as they typically bear the responsibility for water collection and are
more vulnerable to waterborne diseases (UNDP, 2020). The Climate Change Act, 2024 explicitly
requires that climate risk assessments consider vulnerable sectors and communities, ensuring that
adaptation planning addresses these inequities (Republic of South Africa, 2024).
Ecosystem health is compromised by climate-induced changes to water systems. Altered flow
regimes, increased water temperatures, and reduced water quality disrupt aquatic and riparian
ecosystems (IPCC, 2022). Wetlands, which provide critical ecosystem services including water
purification and flood attenuation, are particularly vulnerable to climate change (Department of
Water and Sanitation, 2018). Loss of aquatic biodiversity, extinction of endemic species, and
ASSIGNMENT 3 2026
DUE SEPTEMBER 2026
QUESTION 1: Water for People and Progress [20]
1.1 Legislative Instruments for Water Resource Protection and Security
The Constitution of the Republic of South Africa, 1996 serves as the foundational legal instrument
enshrining the right to water. Section 27 of the Constitution guarantees everyone the right of
access to sufficient water, while Section 24 establishes the right to an environment that is not
harmful to health or well-being (Republic of South Africa, 1996). This constitutional framework
elevates water security from a policy preference to a justiciable right, compelling the state to take
reasonable legislative and other measures to progressively realise this right (Republic of South
Africa, 1996). The Constitution further mandates cooperative governance through Section 41,
requiring all spheres of government to work together in ensuring water security, which is
particularly significant given the complex institutional landscape of water management in South
Africa (Republic of South Africa, 1996).
The National Water Act, 1998 (Act 36 of 1998) provides the substantive legal framework for water
resource protection. Central to the National Water Act is the concept of the "Reserve", which
represents the water quantity and quality required to satisfy basic human needs and protect
aquatic ecosystems (Republic of South Africa, 1998a). This dual protection mechanism ensures that
both human consumption and ecological integrity are prioritised before water is allocated for other
uses (Republic of South Africa, 1998a). The Act introduces a classification system for water
resources, establishing resource quality objectives that are binding on all authorities when
exercising powers under the Act (Republic of South Africa, 1998a). The National Water Act also
provides for pollution prevention and remediation measures through Chapter 4, requiring licensing
of water uses that may impact water quality (Republic of South Africa, 1998a). Significantly, the Act
promotes integrated water resource management through catchment management agencies
(CMAs), which coordinate water management at the local level (Republic of South Africa, 1998a).
The National Environmental Management Act, 1998 (Act 107 of 1998) complements the National
Water Act by establishing principles for environmental governance that are applicable to water
resources (Republic of South Africa, 1998b). NEMA requires that environmental impacts, including
those affecting water quality, be considered through environmental authorisation processes, which
serve as a preventive mechanism against water resource degradation (Republic of South Africa,
1998b). Section 2 of NEMA sets out the principles of sustainable development, including that
pollution and degradation of the environment must be avoided or minimised, and that the
precautionary principle must be applied (Republic of South Africa, 1998b). Furthermore, NEMA
establishes duty of care provisions that require any person who causes significant pollution to take
reasonable measures to remedy the effects, thereby reinforcing accountability for water resource
protection (Republic of South Africa, 1998b).
,Together, these three legislative instruments create an integrated framework: the Constitution
provides the rights-based foundation, the National Water Act operationalises water resource
management and protection, and NEMA ensures that environmental considerations, including
water impacts, are integrated into all development decisions (Republic of South Africa, 1996;
Republic of South Africa, 1998a; Republic of South Africa, 1998b).
1.2 Five Major Development-Related Pressures Affecting Water Quality Resources in Africa
1. Agricultural intensification and agrochemical pollution remains one of the most significant
pressures on African water resources. The expansion of commercial agriculture and increased use
of fertilisers, pesticides, and herbicides have led to widespread contamination of surface and
groundwater systems across the continent (UNEP, 2016). In South Africa, intensive agricultural
activities in the Vaal River catchment have contributed to eutrophication and elevated nitrate
levels in water sources (Department of Water and Sanitation, 2018). Similarly, in Kenya's Lake
Victoria basin, agricultural runoff has been identified as a primary driver of water quality
degradation, with significant impacts on aquatic biodiversity and fisheries (Odada et al., 2009).
2. Rapid urbanisation and inadequate wastewater infrastructure exert immense pressure on water
quality in African cities. The majority of African urban centres lack adequate wastewater treatment
capacity, resulting in direct discharge of untreated or partially treated sewage into water bodies
(UN-Habitat, 2020). In South Africa, the Blue Drop and Green Drop reports consistently highlight
the poor performance of municipal wastewater treatment works, with many failing to meet
effluent quality standards (Department of Water and Sanitation, 2022). The situation is equally
concerning in other African countries; for instance, in Accra, Ghana, only a fraction of wastewater
generated is adequately treated, with the remainder contaminating groundwater and coastal
ecosystems (Karikari & Ansa-Asare, 2006).
3. Industrialisation and mining activities represent a critical pressure on water resources,
particularly in countries with significant mineral extraction sectors. Acid mine drainage from
abandoned and operational mines in South Africa's Witwatersrand basin has resulted in severe
contamination of water sources with heavy metals and sulphates, threatening both human health
and aquatic ecosystems (McCarthy, 2011). Industrial effluents containing toxic chemicals, heavy
metals, and organic pollutants similarly degrade water quality in many African industrial zones
(Nyenje et al., 2010). In Nigeria's Niger Delta, petroleum extraction has caused extensive
contamination of freshwater and coastal water resources (UNEP, 2011).
4. Deforestation and land-use change significantly affect water quality through increased soil
erosion and sedimentation. Conversion of natural vegetation to agricultural or urban land uses
increases sediment loads in rivers, smothers aquatic habitats, and transports attached pollutants
into water systems (Schulze, 2011). In the Ethiopian highlands, extensive deforestation has
accelerated erosion rates, leading to sedimentation of Lake Tana and degradation of water quality
(Wondie et al., 2012). Similarly, in South Africa's Eastern Cape, degradation of catchment
vegetation has contributed to elevated turbidity and reduced water quality in critical water supply
systems (Department of Water and Sanitation, 2018).
, 5. Solid waste management challenges and marine litter increasingly threaten water quality across
Africa. Inadequate collection and disposal of solid waste results in leachate contamination of
groundwater and surface water sources (Hoornweg & Bhada-Tata, 2012). Coastal and marine
pollution from land-based sources, including plastic waste and inadequate sanitation, has emerged
as a growing concern for water quality in African coastal cities and ecosystems (UNEP, 2016). The
proliferation of illegal dumping sites and uncontrolled landfills contributes to the contamination of
both groundwater aquifers and surface water bodies, with significant implications for water
security and public health (Hoornweg & Bhada-Tata, 2012).
1.3 Climate Change Effects on Water Quality, Availability, Vulnerable Communities, and
Ecosystem Health
The Climate Change Act, 2024 requires risks to be considered in environmental planning and
decision-making (Republic of South Africa, 2024). Climate change may affect water systems in the
following ways:
Water quality is projected to deteriorate due to climate change through several mechanisms.
Increased temperatures promote algal blooms and eutrophication in water bodies, while
intensified rainfall events and flooding cause increased runoff of pollutants and sedimentation
(Intergovernmental Panel on Climate Change [IPCC], 2022). Reduced streamflows during drought
periods concentrate pollutants in remaining water volumes, further compromising water quality
(Department of Water and Sanitation, 2018). Changes in water temperature also affect dissolved
oxygen levels and the survival of aquatic organisms (IPCC, 2022).
Water availability is severely threatened by climate change in Africa. Projections indicate that parts
of Southern Africa will experience significant reductions in mean annual precipitation, while
increased evaporation rates driven by higher temperatures will further reduce water availability
(IPCC, 2022). Glacial retreat in East Africa's mountainous regions, such as Mount Kilimanjaro and
the Rwenzori Mountains, diminishes dry-season water flows that support millions of people (IPCC,
2022). Increased frequency of extreme events, including droughts and floods, exacerbates water
security challenges and complicates water resource planning and management (Department of
Water and Sanitation, 2018).
Vulnerable communities bear the greatest burden of climate impacts on water resources. Poor
communities, particularly in rural areas and informal urban settlements, often lack access to safe
water and sanitation and have limited adaptive capacity to respond to water-related climate shocks
(United Nations Development Programme [UNDP], 2020). Women and children are
disproportionately affected, as they typically bear the responsibility for water collection and are
more vulnerable to waterborne diseases (UNDP, 2020). The Climate Change Act, 2024 explicitly
requires that climate risk assessments consider vulnerable sectors and communities, ensuring that
adaptation planning addresses these inequities (Republic of South Africa, 2024).
Ecosystem health is compromised by climate-induced changes to water systems. Altered flow
regimes, increased water temperatures, and reduced water quality disrupt aquatic and riparian
ecosystems (IPCC, 2022). Wetlands, which provide critical ecosystem services including water
purification and flood attenuation, are particularly vulnerable to climate change (Department of
Water and Sanitation, 2018). Loss of aquatic biodiversity, extinction of endemic species, and
