This is part of an escalating public-health and political dispute in eastern Tshwane (Region 7) involving communities including Bronkhorstspruit, Zithobeni, Dark City, Rethabiseng and Sokhulumi. The situation involves confirmed water contamination, laboratory findings that do not support epidemic cholera as the cause of illness, admissions of operational failure, and competing narratives from the current ActionSA-led coalition administration and opposition parties (particularly the Democratic Alliance) ahead of local elections.
The outbreak and laboratory findings
Between 7 and 18 October 2026, authorities recorded 408 cases of gastrointestinal illness (primarily diarrhoea and stomach cramps). The majority of patients were children under four years old. Cases peaked at 72 on 13 October and declined to 16 by 18 October. No deaths have been reported. Most patients were rehydrated and discharged relatively quickly; Bronkhorstspruit Hospital set up isolation and overflow capacity.
Joint statements from the national Departments of Health and Water and Sanitation, the Gauteng provincial government, and the City of Tshwane linked the illnesses to contaminated water from the Bronkhorstspruit Water Treatment Works (BWTW). National Institute for Communicable Diseases (NICD) testing of stool samples detected norovirus, Campylobacter, Shigella and other pathogens capable of causing the observed symptoms. No cholera bacteria were found in the patient stool samples tested.
Water quality tests on 14 October found extremely high levels of E. coli and total coliforms (indicators of faecal/sewage contamination) at the treatment works and in reservoirs serving Ekandustria/Dark City and Zithobeni. Some further assessments detected a variant of Vibrio cholerae (the broader bacterial group that includes the cholera-causing organism) in certain water or reservoir samples. Officials, including Moya, have stated that this is not the toxigenic/epidemic strain associated with cholera outbreaks, and that no patients tested positive for cholera.
Residents have been advised to use tap water only for flushing toilets and to avoid it for drinking, cooking, bathing, brushing teeth, washing food or laundry (even after boiling). Previously stored water should be discarded and containers disinfected. Alternative supply is being provided via water tankers (around 35–36 operating as of mid-to-late October reporting), with the city stating that tanker water is routinely tested.
Cause of the contamination
The BWTW abstracts water from the Bronkhorstspruit River, which is heavily polluted by sewage from upstream dysfunctional wastewater treatment works (notably under Victor Khanye Municipality) and dysfunctional City of Tshwane sewage pump stations.
A Department of Water and Sanitation investigation found that the plant supplied unchlorinated water from 24 September to 14 October 2026 because of difficulties with the city’s chlorine supplier (reported price increases of up to fourfold and failed negotiations). Senior leadership was not promptly informed by plant officials. The plant was isolated, chlorine supply restored around 15 October, and limited operations resumed thereafter pending further checks.
Moya publicly accepted political responsibility and described the failure to chlorinate and to warn residents as negligence. Disciplinary processes against responsible officials were said to be under way via the city’s chief operating officer. She also noted inadequate communication with affected communities.
Political claims and counter-claims
The Democratic Alliance (whose Tshwane mayoral candidate is former Executive Mayor Cilliers Brink) has alleged, citing whistleblower information, that cholera bacteria were detected in samples at the Bronkhorstspruit Wastewater Treatment Works. Brink has also claimed the city spent approximately R777 million on water tankers in 2024/25 while under-investing in infrastructure maintenance and repairs, contributing to a crisis that hospitalised more than 160 people (figures that were later overtaken by the higher total case count). The DA has laid criminal charges related to failures under water services legislation and demanded full release of test results.
Moya’s response (issued via ActionSA and media statements) rejects the cholera characterisation as an amplification of fear without proper scientific context. She maintains that cholera has not been identified as the cause of the illness outbreak, emphasises the non-epidemic nature of any Vibrio cholerae variant found in water, and notes the absence of cholera in patient samples. On spending, she has pointed to budget allocations and actual expenditure on the plant that increased under successive administrations, including higher figures after the change in mayoralty (Brink left office in 2024; Moya has led since October 2024 in a coalition that includes the ANC and others). She has characterised Brink’s interventions as politically motivated exploitation of a genuine crisis.
The Economic Freedom Fighters have also become involved, laying or preparing criminal charges against Moya and city management, calling for her resignation, and escalating complaints to the Public Protector and South African Human Rights Commission. They emphasise the three-week period of unchlorinated supply without public warning and the impact on residents, especially children.
Broader context and implications
Water infrastructure challenges in Tshwane (and much of Gauteng) are longstanding. The Bronkhorstspruit plant has faced capacity constraints for months, and the area has previously experienced related health issues (including typhoid cases reported in 2025). Similar failures elsewhere in the metro (notably the well-known Hammanskraal problems) have involved sewage pollution of source water, treatment plant underperformance, and heavy reliance on tankers. Root causes typically include ageing or poorly maintained infrastructure, upstream pollution from other municipalities or internal pump-station failures, procurement and supply-chain problems for chemicals such as chlorine, and coordination/accountability gaps between operational staff and political leadership.
The current episode highlights several recurring risks:
- Failure to chlorinate dramatically increases vulnerability when source water is already faecally contaminated.
- Delayed public communication can prolong exposure.
- Political competition around local government elections can intensify scrutiny and accusations, sometimes at the expense of clear public-health messaging.
- Tanker reliance is expensive and logistically intensive; sustained investment in treatment capacity, source protection, and network integrity is required for durable solutions.
As of the most recent detailed reporting (around 19–21 October 2026), new illness cases appear to be declining, alternative water is being distributed, chlorine has been restored, and intergovernmental response teams are active. Full accountability processes, further laboratory confirmation, and longer-term infrastructure fixes remain ongoing. Residents in the affected areas should continue following official guidance on water use and report symptoms promptly.
The situation underscores both the immediate public-health consequences of treatment failures and the deeper structural difficulties of water service delivery in parts of South Africa’s metros. Accurate communication of laboratory results (distinguishing environmental detection of non-toxigenic Vibrio variants from confirmed cholera disease) is essential to avoid either underplaying risks or generating unnecessary panic.
