After delays in repairs, Congress Park Pool — one of the city’s oldest — officially reopened in mid-June.

Cynthia Karvaski, a spokesperson with Denver Parks and Recreation, said the summer pool season started on June 4 this year. Once the danger of frost is over, maintenance workers fill Denver’s outdoor pools. Parks staff cannot check for leaks until the pools are filled.

“After months of the ground freezing, thawing and re-freezing in the fluctuating temperatures often experienced on the Front Range, it’s not uncommon to find leaks and other damage to operating equipment such as pumps, valves and more,” Karvaski said in an email. “Many of these issues can be repaired quickly.”

The Congress Park outdoor pool, at 850 Josephine St., was built in 1955, because of its age, Karvaksi said it is one of the most expensive pools to maintain.

Over the years, staff have been able to make temporary fixes to leaks. But this year, Karvaski said the damage was significantly worse. While they were able to repair leaks and reopen the pool for the 2018 summer season, continued repairs and maintenance will cost the city more than rebuilding the pool.

Last November, voters approved a $937 General Obligation Bond to pay for more than 460 projects across the city — $8.3 million of that is going toward the reconstruction of the Congress Park Pool.

The city has started design work on the new pool, Karvaski said. The design process will take about nine months. Construction on the pool will take an additional 12-18 months.

The summer pool season ends on Aug. 12 at Congress Park.