An investigation has been launched after a sewer burst near Windermere.
The Environment Agency is investigating the size and scale of a sewer burst that caused sewage to leak into Windermere on Sunday 25 February in Jenkins Park.
People photographed and reported the incident which United Utilities said it also self-reported to the Environment Agency.
An Environment Agency spokesman said: “On Sunday 25 February we received a report of potential sewage pollution at Jenkins Park, Windermere from a concerned member of the public.
“Thanks to this report we were able to respond quickly. Environment Agency officers attended the site to assess any initial environmental impacts.
“The discharge of sewage was stopped at around 8.30pm. In responding, United Utilities worked to prevent any further pollution and to carry out repairs to their infrastructure.
“A full clean-up took place the following day and Environment Agency officers continued to monitor the situation, staying on site to minimise any further impacts to the environment, and to gather evidence.”
At the time a drinking water pipe also burst in then area. United Utilities said the two incidents were unrelated.
A spokeswoman for the water firm added: “Occasionally pipes burst and our teams always respond quickly to assess what has happened and carry out repairs.
“We will always notify customers if it will have any impact on the service they receive, particularly any loss of water supply. On this occasion there were two separate issues.
“We notified customers about a burst water pipe which temporarily affected water supplies.
“We also attended and repaired a burst on a sewer which we notified the Environment Agency about as a matter of course.
“We did not notify customers as there was no effect on wastewater service provision.”
The Save Windermere campaign said it was also questioning the incident.
Set up by Matt Staniek, the group has been campaigning for the body of water to be cleaned up, as they claim it is being polluted by United Utilities and others.