Ben Shayler, area environment manager for the Environment Agency said that he sympathised with local residents.
"I completely understand the problems that are being experienced in Calne, and I really feel for the residents", he said.
"It's completely unacceptable the levels of odour that we're experiencing at the moment."
Local councillor Sam Pearce-Kearney said "it was good that Hills' have taken responsibility" and added he is "confident" the issue will be resolved by late summer.