PRINCETON — The Princeton City Pool has closed for the rest of the summer.

Amanda McCabe, the city’s director of parks and recreation, said the pool, which is the only public pool in the county, opened for the summer on June 7 but had to be closed when a problem surfaced on June 17.

“We made (closing for the rest of the summer) official,” she said Monday, adding that a mechanical issue is the cause.

“Our pump to the main pool went out,” she said, explaining that the impeller stopped functioning and the water could not be filtered.

McCabe said the problem is the pump, including the impeller, was custom made for the pool and installed in 1996, so many of the parts are not available commercially and have to also be custom made.

“We searched for a place to have it made,” she said. “We found a place in Seattle (Washington State), but it would take four weeks.”

That meant the pool would not reopen until the end of July, and it was scheduled to close right after than anyway, just before school reopened.

“People lose interest in the pool in August,” she said, with school opening and fall sports and activities revving up.

Although it’s closed for the remaining of this summer, the city plans to reopen it next year, she added, and in the meantime figure out the best way to proceed with the repair or possibly a new pump.

“There will be discussions about it,” she said, and grant funding may be sought for upgrades as well.

McCabe said the public pool serves all residents of Mercer County.

“Over the course of a typical summer we see about 9,000 visits,” she said of the Olympic-size outdoor pool with a slide and also in surrounded by trails, playgrounds and picnic shelters.

Contact Charles Boothe at cboothe@bdtonline.com