Modderfontein River – Projects and Authorizations (EIA)

Find projects that impact the Modderfontein River. Match the project to the Environmental Impact Assessment (EIA) and the Environmental Assessment Practitioner (EAP). Read an Edenvale RiverWatch Status and Appraisal of the project. These projects are in Illiondale and Isandovale residential suburbs, Sebenza and Spartan Industrial Estates and the Modderfontein suburbs and industrial complex.

Satellite photo of sewage pump house in Illiondale, Edenvale, being demolished in May 2019
Modderfontein Outfall Sewer Project: Demolition of the R25 pump house in lower Illiondale, May 2019

List of Modderfontein River Projects *

Reference & EAPProjectDate Description and Status:
GAUT 002/18-19/E0118
EAP: Nali Sustainability Solutions (Pty) Ltd
Longlake Extension 34 TownshipStarted January 2020Adjacent to Modderfontein Reserve, with stormwater attenuation in the reserve
GAUT 002/18-19/E2345

EAP: Citofield
Phasing out Spartan Sewage Pump StationStarted March 2019A new sewer line will cross the veld from Spartan to Illiondale, feeding into the CoJ wastewater system.
Reference not available
EAP: Advisian
Remediation of Upper Jukskei Catchment in EkurhuleniStarted May 2019A broad plan including the Modderfontein River in Illiondale. Still in a work in progress, but there are problems. Read more …
GAUT 002/18-19/E0245

EAP: Green Tree Environmental Consulting
Soccer fields, Bird and Sculpture Park near Modderfontein Dam Approved Aug 2019 and Dec 2019Partial Authorization was given first, requiring all structures to be outside the 30 m wetland buffer zone. Final authorization given December 2019.
Gaut 002/15-16/E0043

EAP: Environmental Impact Services Management (EIMS)
Illiondale Wetland Rehabilitation ProjectApproved April 2016Implementation started in 2017, but little was done and much was ineffective. Read a full assessment …
GAUT 002/08-09/N0584

EAP: Seaton Thompson & Associates.
Modderfontein Outfall SewerApproved Nov 2008Project completed in 2019 after a start in 2011. But site clearing and rehabilitation have failed badly as shown in this report …
GAUT 002/08-09/N0946

EAP: Strategic Environmental Focus (SEF).
Isandovale Soil Erosion Management Approved Jan 2008 Run off control from Baker Rd to Modderfontein Rd (R25). Completed in 2011, it left a legacy of failures. Read more on this and subsequent work up to 2019


The Modderfontein River catchment consists of Illiondale residential suburb, Sebenza and Spartan Industrial Estates and Kelvin Power in City of Ekurhuleni. In City of Johannesburg the river flows through Modderfontein Village with the AECI factory and the Modderfontein Reserve. Founder’s Hill South, although in Johannesburg, feeds stormwater and sometimes pollution into Illiondale.

The applications include specialist studies such as reports on the condition of the streams and riparian zones, wildlife and vegetation, heritage significance, hydrology and flood lines, and more.

These projects also require Water Use Licence Authorizations (WULA). Contact the EAP for information on a project.

Additional work on a stream may be within the scope of an earlier authorization, and sometimes an earlier authorization may be amended with a new reference number.

If you know of projects not included in this summary please contact me.