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AfriStatsXchange Report · 2026-11-15 11:43
South Africa Whey Production vs. Gauteng Food Waste (2022-2025)

Milk SA monthly data, Gauateng Waste · saved 2026-09-17

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2026-09-17 21:47 · Diederik de Roos

Analysis of Dairy By-Products and the Gauteng Organic Waste Economy (2022–2025)

This chart compares national dairy-specific organic by-products (Whey) against the broader organic and Food Waste (GW2002) economy in Gauteng.

1. Milk Production & The Primary Dairy By-Product: Whey

In the dairy sector, the manufacturing of cheese and other curdled milk products produces Whey as the main liquid co-product. Historically regarded as a waste stream, whey contains significant organic content.

  • Growing Trend: National Whey production has increased by over 30.8% between 2022 and 2025.
    • 2022: 18,875,940 kg (approx. 18.8k Tonnes)
    • 2023: 21,606,293 kg (approx. 21.6k Tonnes)
    • 2024: 24,732,970 kg (approx. 24.7k Tonnes)
    • 2025: 24,705,471 kg (approx. 24.7k Tonnes)
  • Seasonality: Whey production shows clear annual cycles. It typically troughs in the dry winter months (Feb–March) and peaks significantly during spring/early summer (September–November), aligned with peak pasture-based milk production cycles across South Africa.

2. Gauteng's Organic Waste Economy

Within Gauteng, organic and food wastes (GW2002) represent a major component of the general waste stream:

  • 2022: 77,883 Tonnes
  • 2023: 83,162 Tonnes
  • 2024: 59,259 Tonnes
  • 2025: 133,849 Tonnes (a dramatic 125.9% year-on-year increase from 2024)

3. Destination of Dairy and Food Waste in Gauteng

Major dairy processing facilities in Gauteng (such as Clover Clayville in Ekurhuleni and Danone in Johannesburg) report small hazardous waste footprints (mostly clinical testing wastes like infectious waste HW1902). However, their high-volume organic liquid waste is diverted directly to organic recovery facilities:

  • Bronkhorstspruit Biogas Plant (GPF-03-182): The top recipient of Gauteng food waste, receiving 309,526 Tonnes in total. Highly energetic liquid wastes like whey and spoiled dairy are premium feedstocks for biogas digesters.
  • The Friendly Cow CC (GPF-09-957): An approved waste treatment facility in Alberton that handled 8,331 Tonnes of food waste in 2025.
  • Other major circular economy players include Eco Energy Trading (GPR-04-589) and Viewpoint Farming (GPF-01-459), which process organic waste into compost and feed.

These trends highlight a shifting waste economy where dairy and food processing by-products are increasingly funneled away from landfills and into high-value bio-energy and composting loops.

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Source: AfriStatsXchange · https://asx.octoplus.co.za/analysis/chart/f8d64428-5aa1-4d45-8524-24c94a2fc700