The 48th Unionville Festival goes this weekend — but without a Saturday night pop and a bang.

The traditional Saturday night fireworks at Toogood Pond, a highlight looked forward to by thousands of festival-goers, is a no-go this year due to "construction delays," according to organizers.

It's a big disappointment, according to Unionville Festival committee member Shanta Sundarason, who was upset the construction around the pond wasn't done in time for the festival.

"We get 20,000 guests every year, people come from everywhere," said Sundarason, a Unionville resident.

"The work they're doing around Toogood Pond was supposed to have been finished by February, they fenced around the pond to redo a path. We heard they would then start in the spring, in April. Nothing's been done, the work's not going to be finished, we've advertised all the way up to Quebec," she said.

"We sent out 10,000 brochures, we now have to cancel the fireworks,” Sundarason added.

John Cabrelli, president of the festival, said it might have been better to put off the work until September 2017, when it was clear it couldn’t be accomplished this year so that the fireworks could take place.

He said the fireworks take months of planning by volunteers for safety and security reasons and that moving them to Carlton Park, as suggested by Unionville-area Coun. Don Hamilton wasn’t feasible.

Hamilton, who represents Unionville, blamed poor weather throughout April and May for lack of work on the area.

He admitted the contractor hired to do the work was originally scheduled to complete it last fall, but was delayed on another project. He tried to do the work during the winter, but the weather prevented him from doing that, Hamiton said.