Daschund “Pebble” got spooked before running off from a house in March and ending up on the land.
She was found dead in a disused well weeks later; her family claims inadequate searches were carried out by the utility firm.
Pebble’s owner, Victoria Kershaw, says the land is dangerous, for animals and children.
“We’re deeply saddened that Pebble passed away in a disused part of the sewage works and our condolences go out to her family.
“When we were
told she was missing, our team on site tried extremely hard to find
Pebble safe and well and reunite her with her owners. We spent many
hours searching parts of our site and assisted with
drone searches, as well as setting up cameras and leaving out food at
night.
“All our sites must be kept secure at all
times and we carried out a full review of the fencing at Esher sewage
treatment works to ensure incidents like this do not occur. Our site
comprehensive review concluded that the site perimeter
fencing was secure, in a good condition and complies to our security
guidelines.
“We’ll also be reviewing how we kept Pebble’s
owners informed of our efforts to locate her and the processes
available for them to communicate with us.
“In memory of Pebble we also made a donation to the Dogs Trust.”