It’s only been open for a little more than a week, but Hill Pool is now closed for the season.

City officials say an act of vandalism has forced them to shut things down at the site.

Medicine Hat Police confirmed a “liquid substance” was poured into the pool, contaminating the water.

Parks and Recreation general manager James Will says the pool needs to be drained, all surfaces scrubbed and all water lines rinsed.

Will adds that the decision was made to keep it closed and move to winterize it after the pool has been cleaned.

Swimming lessons have been cancelled and will try to be accommodated at other city pools.