The 20-year-old, who hails from Wollaston, cruised to first place in the S6 100m breaststroke in front of her home crowd at the Sandwell Aquatics Centre.
It was the first time the S6 100m breaststroke had been held as part of the Commonwealth Games, and the world, paralympic and European champion added another title to her growing collection.
Summers-Newton is the world record holder in the event, and she dominated the race in Birmingham from the very start.
Summers-Newton took to Twitter to praise the supporters inside the Sandwell Aquatics Centre.
"I didn’t expect that roar to be honest," she wrote.
"It put a smile on my face. It spurred us on a little bit more – trying to spot my family, that was the hardest part. It was really good."