Thames Water’s new event duration monitoring (EDM) map shows near real-time storm discharge activity. You can use the map to see if the company’s EDM monitors indicate:

• that overflows are currently discharging into a watercourse
• the date, time and duration of the last recorded discharge

From the Guardian

Thames Water’s real-time map confirms raw sewage discharges

Effluent in Gloucestershire river pinpointed by digital map as water companies accused of routinely pumping out waste to rivers