The same bucket was stolen back in 2016, and later returned under cover of darkness, with a new paint job, The interior of the bucket had been covered in bright psychedelic artwork.
MacLean says it'll be a while before a new bucket can be put in place to replace the stolen one, even though a number of weeks have already passed.
"The fountain isn't working right now and we've got a local company to build a new bucket out of fibreglass. It'll probably take a couple of weeks to get everything going again."
He says whoever is harbouring the bucket can bring it back, no questions asked.
"But in saying that, we'll also be having a look at our CCTV cameras to see if we can spot any perpetrators."
Wellington District Police are on the case too, posting on Facebook that the bucket's owner – Wellington City Council – is concerned for its welfare.
"Bucket is described as bright yellow and resembles a deep vessel with an oval opening."
But police were not all laughs, reminding Wellingtonians that the missing bucket is still considered theft, and a costly one at that, with a replacement likely to cost around $2000.
"If you know where the missing bucket is, please call 105."