AllAfrica reported that 408 residents in Tshwane’s Region 7 developed acute gastrointestinal illnesses between 7 and 18 October 2026. The majority of cases involved children under four years old in areas including Bronkhorstspruit and Zithobeni. The outbreak peaked on 13 October, with 72 new patients arriving at local clinics and Bronkhorstspruit Hospital in a single day. According to the publication, no fatalities had been recorded by the time of the report.
Joint investigations by the National Institute for Communicable Diseases and the Department of Water and Sanitation traced the illness to the Bronkhorstspruit Water Treatment Works. Laboratory tests on stool samples identified Norovirus, Campylobacter, and Shigella as pathogens. Water quality checks conducted on 14 October revealed severe bacterial contamination, specifically high concentrations of E. coli and total coliforms. The primary cause was a nearly three-week period, from 24 September to 14 October, during which the municipality did not add chlorine to water abstracted from the Bronkhorstspruit River.
The river source is heavily impacted by raw sewage from upstream wastewater facilities under the Victor Khanye Municipality and Tshwane’s own pump stations. AllAfrica noted that the city failed to alert residents that the unchlorinated water was unsafe for drinking or cooking, even after boiling. Mayor Nasiphi Moya explained at a Monday briefing that a supplier had quadrupled its prices, leading to failed negotiations and internal communication gaps about the chlorine shortage.
The treatment plant closed on 14 October and reopened on 16 October after chlorine supplies were restored. Thirty-six tankers were deployed to the area, and Rand Water was assigned to oversee urgent repairs and ongoing safety testing. The Water Research Commission is conducting independent analysis. Until safety standards are met, tap water in the affected zones is limited to flushing toilets. Residents like Nicky Sibanda and Selina Maphosa expressed frustration over the lack of clear updates and continued discoloured water.
Background context provided by AllAfrica indicates that South Africa’s water system uses an indirect reuse model, where treated sewage effluent returns to rivers before municipal abstraction. Expert Dr. Anthony Turton explained that when upstream sewage infrastructure fails, treatment plants are forced to handle raw sewage beyond their design capacity. Tshwane’s 2025 Green Drop audit score dropped to 33.8%, reflecting critical underperformance in its wastewater systems.