Just stumbled upon this:

Academic calls for upgrade to sewage systems to protect health

The risk to public health from human faeces in our [UK] rivers and seas will increase without action to create a wastewater system fit for the future, according to Professor Barbara Evans, Leeds’ Professor of Public Health Engineering at the University of Leeds.

The report [led by Professor Evans]says collective action by industry, government, public bodies and the general public is required. It makes 15 recommendations, including: review current bathing water regulations; prioritise maintenance of the existing sewage network; return to collecting widespread data on faecal bacteria; develop a long-term strategy for better designing cities to reduce flooding, and the appointment of a dedicated wastewater champion.

Here is the report (pdf).