Name: Water Polution Potential

Display Field: MUNICNAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This dataset represents the spatial distribution of potential groundwater pollution areas, derived through a weighted multi‑criteria analysis of land cover types and pollution‑related activities. The assessment incorporates mining, settlements, agricultural land uses, and perennial water features to evaluate cumulative pollution potential. The resulting raster and municipal‑level summaries provide insight into areas where groundwater resources may be at higher risk of contamination. Potential groundwater pollution areas were identified using a weighted land‑cover–based spatial analysis. Land Cover data from the Department of Forestry, Fisheries and the Environment was used to represent pollution‑related features such as mining, settlements, agriculture, and industrial areas. Each land cover type was assigned a pollution‑potential weight based on its expected contribution to groundwater contamination.The weighted classes were converted to raster layers and integrated in ArcGIS Pro using the Raster Calculator to produce a composite pollution‑potential surface. The resulting raster was summarised at municipal level using the Zonal Statistics as Table tool, allowing identification of municipalities with higher pollution hazard scores.

Service Item Id: 703a970ce24a472b936178254af2446d

Copyright Text: Prepared by: Herman Booysen, Principal GIS Scientist / Associate Partner Organisation: SRK Consulting Additional data sources: Department of Forestry, Fisheries, and the Environment (DFFE) Land Cover Dataset

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: 28.873479941000028
YMin: -31.082629940999936
XMax: 32.944984945000044
YMax: -26.804419936999977
Spatial Reference: 4148  (4148)

Drawing Info:

Renderer:
Class Breaks Renderer:
Field: WaterPolRisk_Class
Min. Value: 1.0
ClassBreakInfos:
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Transparency: 20
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false
Supports Percentile Statistics: true
Supports Having Clause: true
Supports Count Distinct: true
Supports Time Relation: true
Supports Sql Format: false
Supports Query Analytic: true
Supports Query With Current User: true

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID_1 )
• PROVINCE ( type: esriFieldTypeString, alias: PROVINCE, length: 50 )
• CATEGORY ( type: esriFieldTypeString, alias: CATEGORY, length: 5 )
• CAT2 ( type: esriFieldTypeString, alias: CAT2, length: 254 )
• CAT_B ( type: esriFieldTypeString, alias: CAT_B, length: 150 )
• MUNICNAME ( type: esriFieldTypeString, alias: MUNICNAME, length: 100 )
• NAMECODE ( type: esriFieldTypeString, alias: NAMECODE, length: 254 )
• DISTRICT ( type: esriFieldTypeString, alias: DISTRICT, length: 25 )
• DISTRICT_N ( type: esriFieldTypeString, alias: DISTRICT_N, length: 100 )
• F2 ( type: esriFieldTypeString, alias: F2, length: 100 )
• WaterPolSum ( type: esriFieldTypeDouble, alias: WaterPolSum )
• WaterPolRisk ( type: esriFieldTypeDouble, alias: WaterPolRisk )
• Ha ( type: esriFieldTypeDouble, alias: Ha )
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• Shape.STArea() ( type: esriFieldTypeDouble, alias: Shape.STArea() )
• Shape.STLength() ( type: esriFieldTypeDouble, alias: Shape.STLength() )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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