Tshwane admits negligence after 408 fall ill in Bronkhorstspruit

The outbreak affected 408 residents over 12 days, from 7 to 18 October. Most patients were children under four, making the scale especially serious for families and health services. No deaths had been reported by Monday.

The affected communities were Zithobeni, Bronkhorstspruit, Dark City, Rethabiseng and Sokhulumi. Reported illness peaked on 13 October, when 72 cases were recorded. Another 16 cases were reported on Sunday. Symptoms and laboratory findings pointed to gastrointestinal disease linked to a common water supply.

The outbreak was still active when authorities briefed the public. Officials were trying to stop further infections by closing the treatment works, restoring chlorine and supplying water by tanker. Residents were told not to use tap water for drinking, cooking, bathing, brushing teeth, washing food or clothes. There was no timeframe for declaring the plant's water safe again.

Chlorination is the treatment of water with chlorine before it enters a distribution system. Chlorine helps kill or control disease-causing microorganisms, including bacteria and viruses. This makes water safer to drink and use for food preparation. It is a key barrier between contaminated source water and communities.

At Bronkhorstspruit, the treatment works supplied unchlorinated water from 24 September to 14 October. The city said it had run out of chlorine after a dispute with its supplier, whose price had increased fourfold. Tests later found extremely high levels of E. coli and total coliforms in the treatment works’ water and two reservoirs.

Chlorination would not replace source protection or other treatment steps, but it was an essential safeguard here. The city closed the works on 14 October and restored chlorine the next day. The works reopened on 16 October, but residents were still told the water was unsafe to drink, with no timetable for safety.

Supplying unchlorinated water removed an important safety barrier from a polluted water system. If contaminated water reaches households, people can swallow pathogens while drinking or using it for cooking, food washing, brushing teeth or bathing. Those organisms can cause diarrhoea, stomach cramps and other gastrointestinal symptoms.

The investigation linked the outbreak to the common water supply because three of four stool specimens contained norovirus, Campylobacter and Shigella, alongside other pathogens. Water tests also found extremely high E. coli and total coliforms in the treatment works and reservoirs. No cholera bacteria were found in the sampled stools.

The exact contribution of each pathogen was not established in the article. However, the rapid spread of illness and the combination of pathogens pointed to water as the likely source. Authorities told residents to stop using tap water except for flushing toilets, while further tests and public-health measures continued.

The Bronkhorstspruit River was especially dangerous because it was heavily contaminated with sewage pollution. The pollution came from dysfunctional wastewater treatment works under Victor Khanye municipality and dysfunctional Tshwane sewage pump stations. This meant the raw water source was receiving contamination before it reached Tshwane’s treatment plant.

The danger became greater when the plant supplied water without chlorine from 24 September to 14 October. Department tests on 14 October found extremely high E. coli and total coliforms in water from the treatment works and the Ekandustria and Zithobeni reservoirs. Laboratory tests also found several pathogens in residents’ stool samples.

The investigation said the combination of pathogens and rapid illness spread pointed to the common water supply. Further tests were still under way to identify other harmful contaminants. The city closed the works, restored chlorine and increased tanker supplies, but there was no timeframe for safe tap water to return.

The clearest operational failure was the loss of chlorination. A supplier dispute left the city without chlorine, so the treatment works supplied water unchlorinated for three weeks. The department’s investigation found that the city failed to warn residents not to drink or use the water for cooking, washing or bathing, even after boiling.

Officials also failed to tell city leadership about the chlorine problem. Executive mayor Nasiphi Moya said the city took responsibility for the negligence and that action against officials managing the treatment works was under way. The plant continued supplying water until it was closed on 14 October, after illness reports had begun.

These failures reduced the protection normally expected at the works and delayed residents’ ability to avoid exposure. Chlorine was restored on 15 October, and the plant reopened the next day. However, reopening did not make the water immediately safe, so officials continued tanker deliveries and issued strict usage instructions.

Residents were told to stop using their taps for drinking, cooking, bathing, brushing teeth, washing food or washing clothes. Tap water could be used only for flushing toilets. This left tanker supplies as the main stated alternative for drinking and essential household needs, although the article does not identify a separate washing supply.

The city increased tanker deliveries to 36 and said tanker water was routinely tested for safety. Residents were told to store it in clean containers with lids. Water previously stored at home had to be discarded, and containers had to be disinfected with household bleach. Laboratory tests also showed that water from the Cullinan treatment works was safe to drink.

The treatment works reopened after chlorine supplies were restored, but its water was still not suitable for drinking. The city therefore continued tanker deliveries while testing and corrective work proceeded. No timeframe was given for the return of safe tap water, so residents remained dependent on alternative supplies.

Water-treatment plants are the first protection between polluted sources and households. They must treat incoming water and maintain safeguards such as chlorination. Public-health rules then tell authorities how to respond when water is unsafe. In this case, the 2025 Compulsory Standards required warnings against drinking or using unchlorinated water, even after boiling.

Municipal accountability connects those systems. Tshwane was responsible for managing the works, securing chlorine and informing residents. The city failed to warn communities, while officials did not alert leadership about the shortage. Executive mayor Nasiphi Moya accepted responsibility, and action against officials managing the works was under way.

The response included closing the plant, restoring chlorine, testing supplies and adding tankers. But reopening the works did not immediately make its water safe. Preventing another outbreak requires reliable treatment controls, rapid communication, continued testing and clear responsibility when suppliers or infrastructure fail.