Sonoma State University students, staff and anyone on campus were advised this weekend to not use its water due to a "quality issue," according to the university.

As of Saturday, anyone on campus should not drink the water or use it for cooking, showering, laundry, cleaning or to wash their hands, SSU said in a post on its environmental health and safety page. Employees were instructed to use hand sanitizer in place of handwashing. Students and staff can still flush toilets.

Recent testing of the water showed it had an "excessive" chlorine level, which is unsafe, the release said. Chlorine is used to treat water and make it safe to drink, but it becomes dangerous at higher amounts.

The university's water operator began addressing the issue Saturday and was still working Sunday morning.

The university began providing water bottles for on-campus residents about 10:30 p.m. Saturday in two locations -- the meeting room at Beaujolais Village in the southeast and the barrel room at Sauvignon Village, which is in the southwest portion.

About 10:15 a.m. Sunday, SSU posted an update saying the bottled water supply was "depleted" and that more water bottles would soon be available at the Student Center information desk in the middle of campus.

The university anticipates individual buildings will be cleared to restart water usage Sunday afternoon. Any notices and updates will be sent over email or posted to the university's website.

SSU's Environmental Health and Safety department and facilities management routinely tests the water for 200 components, including public health standards and aesthetic qualities like taste, and tests when concerns are reported.