Independent Industrial Water Consulting for South Africa's Coal Power, Petrochemical & Mining-Legacy Water Systems
Vendor-neutral advisory for Eskom-scale power generation, Sasol's Vaal-system operations, and mining-affected industrial water users — where DWS Water Use Licensing, acid mine drainage, and chronic structural water scarcity define the program. Program audits, cooling and boiler water, reverse osmosis, ZLD and degraded-source strategy, Legionella compliance, failure analysis, and contract/RFP support.
Request a South Africa program reviewScarcity, the Vaal System, and Legacy Mine Water
South Africa's heavy industry sits on chronically stressed water resources, and nowhere is that clearer than the Integrated Vaal River System, which supplies Sasol's major Mpumalanga/Free State operations and carries an estimated 111 million m³/year of Vaal-region industrial demand. Eskom's coal-fired fleet consumes water at a similarly industrial scale — roughly 307 million m³ in 2017, about 10 m³/second, overwhelmingly for cooling. When two of the country's largest industrial water users draw from the same constrained system, allocation efficiency and demand reduction are not optional extras; they are the difference between continued operation and curtailment risk.
The other defining source-water challenge is legacy mining. Acid mine drainage (AMD) from historical gold and coal mining is a major contributor of high-TDS, low-pH degraded water across the Witwatersrand and Mpumalanga coalfields. Any facility drawing water in these catchments needs to account for elevated sulphate, metals loading, and acidity as a baseline condition of its makeup or receiving water — a chemistry problem distinct from the scaling or biofouling concerns typical of cleaner source waters, and one that carries its own regulatory "duty of care" obligation.
These two pressures compound rather than sit side by side. A coal power or petrochemical operator drawing Vaal-system water during a low-flow period may find the available makeup already carries elevated mineral loading from upstream mining-affected tributaries, meaning water-quantity stress and water-quality degradation arrive together rather than as separate problems to solve in sequence. A program built only around volumetric allocation, without a parallel view of degraded-source chemistry, tends to under-perform the moment supply gets tight.
DWS Water Use Licensing and Green Drop
Industrial water abstraction, storage, and effluent discharge in South Africa all run through a single licensing authority, with performance of the municipal wastewater system separately tracked and publicly reported:
- Regulator: Department of Water and Sanitation (DWS), under the National Water Act, 1998
- Authorisation: Water Use Licence, General Authorization, or recognized Existing Lawful Use required for abstraction, storage, and effluent discharge
- Licensing timeline: a full Water Use Licence application can take up to 300 days to process
- Wastewater performance benchmark: DWS Green Drop Programme certifies treatment plant performance nationally — 90%+ scores earn "Green Drop" status, while plants below roughly 31% are classed dysfunctional/critical, and the 2026 report continues to flag widespread underperformance amid acute structural scarcity
- Acid mine drainage: regulated under the Water Act's Section 19 "duty of care" provisions for legacy gold/coal mining-affected water
A 300-day licensing runway means Water Use Licence applications need to start well ahead of any capacity expansion or new abstraction point — treated as a critical-path planning item, not a late-stage formality. Given widespread Green Drop underperformance, we also treat municipal wastewater-system reliability as a material input when assessing whether a site's own on-site treatment and reuse capacity is adequate.
Because a dysfunctional municipal plant downstream can mean a facility's own treated effluent is effectively the last line of defence for a shared receiving water, DWS licence conditions increasingly reflect that reality with tighter site-specific limits rather than generic sector benchmarks. We factor the Green Drop status of the relevant local wastewater works into licence-condition negotiation and on-site treatment sizing, rather than assuming municipal infrastructure will absorb any shortfall.
Where Water Complexity Is Highest
Coal Power Generation (Eskom-Scale)
High-volume cooling water systems facing Vaal-system allocation pressure and licensing scrutiny.
Petrochemicals (Sasol & Vaal System)
Integrated process and cooling water demand competing for the same constrained Vaal supply.
Mining & Mining-Affected Sites
Acid mine drainage management and Section 19 duty-of-care compliance across legacy coalfields.
Manufacturing Under Chronic Scarcity
Operators pursuing minimal/zero liquid effluent designs driven by DWS licensing conditions.
Services Available in South Africa
Program Audit & Optimisation
Cooling, boiler, and process program review against DWS licence conditions and water cost.
Cooling Water Systems
Cycle chemistry and scale/corrosion control for coal-power and petrochemical cooling loops.
Boiler & Steam Water
Feedwater purity and cycle chemistry for coal-fired and petrochemical steam systems.
Reverse Osmosis
RO train review and fouling diagnosis for high-TDS, AMD-affected source water.
Water Reuse & Recycling
Minimal/zero liquid effluent strategy driven by DWS licensing and chronic scarcity.
Degraded-Source Water Use
Acid mine drainage and other high-TDS, low-pH degraded makeup water strategy.
Legionella Compliance
Risk assessment and control for evaporative cooling systems.
Failure Analysis
Root-cause diagnosis of corrosion, scaling, fouling, and microbiological failures.
Expert Witness
Independent technical opinion for water-related disputes and litigation support.
Contract & RFP Support
Independent contract governance and vendor RFP drafting/evaluation.
Questions Operators Ask Us Here
How long does a DWS Water Use Licence take, and when should we start?
A full licence application can take up to 300 days to process. We recommend treating this as a critical-path planning item and starting the application well ahead of any capacity expansion or new abstraction point.
Our site draws water affected by acid mine drainage — what does that change?
AMD-affected water typically carries high TDS and low pH from legacy gold or coal mining, which is regulated under the Water Act's Section 19 duty-of-care provisions. It calls for a different treatment and materials strategy than a conventional scaling or biofouling risk profile, and we design around the actual measured chemistry.
Is your scope only cooling water?
No. It spans cooling water, boiler and steam systems, reverse osmosis, water reuse, degraded-source water, Legionella compliance, failure analysis, expert witness work, and contract/RFP support.