Some people in the UK notice their tap water tasting musty this week, and scientists say the change is real. A chemist, Dr Bill Simpson, says there can be reasons water tastes different at certain times.

The reports cite Dr Simpson’s explanation for the “musty” flavour, but they do not provide detailed data in the excerpts provided. The coverage is framed around consumer experience—people who think their water tastes off—rather than on specific test results, locations, or the scale of any issue. Both sources attribute the explanation to the same chemist and present the issue as a temporary flavour change.

Because the available text focuses mainly on the reported taste and a general scientific rationale, there are no additional, clearly different angles or competing interpretations shown between the two outlets in the provided material. Further specifics such as affected regions, monitoring findings, and guidance for households are not included in the excerpts.