Tshwane water contamination leaves hundreds ill after failure to chlorinate supply
A failure to chlorinate water at the Bronkhorstspruit Water Treatment Works has resulted in 408 recorded cases of acute gastrointestinal illness in Tshwane's Region 7 between 7 and 18 October 2026. The contamination, which includes pathogens such as E. coli, Norovirus, Campylobacter, and Shigella, is linked to raw sewage entering the water source from upstream infrastructure. The City of Tshwane failed to chlorinate the water supply for nearly three weeks, from 24 September to 14 October, and did not notify residents of the risk. While the plant was temporarily shut down and chlorine supplies restored, tap water in the affected area remains restricted to toilet flushing until safety compliance is confirmed.
Key points
- 408 cases of acute gastrointestinal illness recorded in Region 7 between 7 and 18 October 2026.
- The City of Tshwane failed to chlorinate water at the Bronkhorstspruit plant for nearly three weeks.
- Laboratory tests confirmed high levels of E. coli and pathogens including Norovirus, Campylobacter, and Shigella.
- The contamination stems from raw sewage entering the water source due to dysfunctional upstream wastewater treatment works.
- Tap water in the affected area remains restricted to toilet flushing.
What happened
Hundreds of residents, primarily children under four, have fallen ill following a water contamination crisis in Tshwane's Region 7. Between 7 and 18 October 2026, 408 cases of acute gastrointestinal illness were reported, with the crisis peaking on 13 October when 72 new cases were recorded in a single day.
Investigations by the National Institute for Communicable Diseases and the Department of Water and Sanitation linked the illnesses to contaminated tap water from the Bronkhorstspruit Water Treatment Works. The facility failed to chlorinate water for nearly three weeks, from 24 September to 14 October, due to supplier disruptions and internal communication failures.
Context and causes
The contamination is attributed to raw sewage entering the Bronkhorstspruit River from dysfunctional wastewater treatment works upstream. Experts note that municipal water plants are not designed to process raw sewage, and the city's 2025 Green Drop audit score of 33.8% reflects systemic infrastructure failures.
Tshwane mayor Nasiphi Moya stated that officials failed to inform city leadership of the chlorine shortage. The municipality has since deployed 36 water tankers and appointed Rand Water to oversee repairs and safety testing.
What's next
Authorities are currently collecting further specimens to determine if an official outbreak should be declared. Tap water in the affected areas remains restricted to toilet flushing until full safety compliance is re-established.
Why it matters
The failure to chlorinate water for three weeks caused 408 illnesses, highlighting critical vulnerabilities in South Africa's water infrastructure.
What we know
- The City of Tshwane reported a failure to chlorinate water at the Bronkhorstspruit Water Treatment Works for nearly three weeks between 24 September and 14 October 2026.
- Between 7 and 18 October 2026, 408 cases of acute gastrointestinal illnesses were recorded in Tshwane's Region 7.
- Laboratory analyses of stool specimens identified pathogens including Norovirus, Campylobacter, and Shigella.
- The water contamination was attributed to raw sewage from upstream dysfunctional wastewater treatment works entering the water source.
- The Bronkhorstspruit Water Treatment Works was shut down on 14 October and reopened on 16 October after chlorine supplies were restored.
What remains unclear
- Whether health authorities will officially declare an outbreak remains under investigation.
- The full extent of the long-term impact on water security in the region remains a subject of expert concern.
How the story developed
Report on water contamination published
GroundUp reports on the water contamination crisis in Tshwane and the failure to chlorinate water.
Original source
