WSE3701
Assignment 2
Due 16 July 2025
, WSE3701
Assessment 2:
Comprehensive Analysis
Due date: 16 July 2025
Site Selection and Problem Identification
The Lepelle Nkumpi Local Municipality in Limpopo Province, South Africa,
represents a typical rural settlement facing severe sanitation infrastructure deficits. The
existing systems are in a dilapidated state, with raw sewage discharge, blockages,
and agrochemical infiltration posing severe risks to human and environmental health.
The area is additionally burdened by mining activities, industrial runoff, and poorly
maintained septic systems, all of which contribute to surface and groundwater
pollution. These factors exacerbate waterborne diseases such as diarrhea, cholera,
and typhoid, disproportionately affecting vulnerable groups like children and the elderly.
The selected site, accommodating approximately 200 households, provides an
opportunity for a complete redesign of the sanitation system, tailored to rural
infrastructure and public health requirements. The moderate population density and
available land make it feasible to implement an off-site, decentralized sewerage
system, ensuring effective containment, collection, treatment, and disposal of domestic
wastewater.
Sanitation Solution and Design Approach
A sewered sanitation system has been selected based on the need for centralized
wastewater collection and treatment, ensuring long-term sustainability, environmental
protection, and compliance with national design standards (SANS 10252-2).
1. Sewage Collection System Design
Layout: A grid-based pipe network will be employed to connect clusters of 20
houses each to a common collector pipe.
Assignment 2
Due 16 July 2025
, WSE3701
Assessment 2:
Comprehensive Analysis
Due date: 16 July 2025
Site Selection and Problem Identification
The Lepelle Nkumpi Local Municipality in Limpopo Province, South Africa,
represents a typical rural settlement facing severe sanitation infrastructure deficits. The
existing systems are in a dilapidated state, with raw sewage discharge, blockages,
and agrochemical infiltration posing severe risks to human and environmental health.
The area is additionally burdened by mining activities, industrial runoff, and poorly
maintained septic systems, all of which contribute to surface and groundwater
pollution. These factors exacerbate waterborne diseases such as diarrhea, cholera,
and typhoid, disproportionately affecting vulnerable groups like children and the elderly.
The selected site, accommodating approximately 200 households, provides an
opportunity for a complete redesign of the sanitation system, tailored to rural
infrastructure and public health requirements. The moderate population density and
available land make it feasible to implement an off-site, decentralized sewerage
system, ensuring effective containment, collection, treatment, and disposal of domestic
wastewater.
Sanitation Solution and Design Approach
A sewered sanitation system has been selected based on the need for centralized
wastewater collection and treatment, ensuring long-term sustainability, environmental
protection, and compliance with national design standards (SANS 10252-2).
1. Sewage Collection System Design
Layout: A grid-based pipe network will be employed to connect clusters of 20
houses each to a common collector pipe.
