ACTIVITSTS staged a protest against sewage outletting at the Thames Water Headquarters in Reading on Monday, March 13.
Campaigners poured fake sewage onto the front steps of the building while wearing hazmat suits and respirators.
They also delivered a letter to the water company demanding that they stop the disputed practise of letting untreated sewage into waterways.
It is also demanding that the company ceases the payment of bonuses and “excessive” wages until problems with waterways are fixed.
It is the second protest against Thames Water in as many months, after blue placques were placed around sites in Reading in February.
A joint statement from Ofwat and the Environment Agency has said that: “The principal public health responsibility for ensuring human faeces and viable human faecal bacteria do not get into waterways people might use recreationally, rest squarely with the water companies and their directors.”