The water will be tested to determine the source of the problem, officials said.

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Elevated levels of copper have been found in drinking fountains at five Olympia Schools: Garfield, L.P. Brown and Roosevelt elementary schools, Jefferson Middle school and Avanti High School, which also houses the Knox Administrative Center.

“A state Department of Health official this morning recommended the district notify families and employees of the five sites with the elevated copper and then take flush samples at those sites,” says a news release issued Monday evening by the district. “The flush sample method requires running water for 30 seconds after water sits unused for eight to 18 hours before collecting samples.”

Testing will help determine if the elevated copper is coming from a specific fixture or a building’s pipes, officials said. The action level for copper is 1.3 milligrams per liter, and the water samples ranged from 1.4 to 3.9 milligrams per liter, according to the news release. Unlike elevated lead levels, the state does not require fountains to be shut off for elevated copper, officials said.