Seven children in Devon become ill after swimming in the River Dart, multiple outlets report. The children take a dip in the river in conditions described as hot, with temperatures reported above 35C. The illness follows an earlier incident in which untreated sewage is dumped upstream for about 16 hours. The outlets describe the sewage release as ongoing for a prolonged period before the children swim in the affected stretch. After swimming, the children begin to feel unwell, with symptoms reported by local accounts as appearing shortly afterward. The incident is presented as an example of potential health risks linked to sewage discharges into waterways. The reporting also notes that the swim takes place days after the sewage spill, raising questions about water quality and contamination persistence. The coverage is consistent in linking the children’s illness to the combination of the river swim and the prior 16-hour untreated sewage discharge upstream, though details about symptoms and official investigation steps are not specified in the provided excerpts.