A school district in Michigan's Upper Peninsula says tests found elevated levels of lead in water at some of its buildings.
WLUC-TV reports Marquette Area Public Schools recently had samples tested in part because of similar issues reported at Northern Michigan University and concern for the safety of students and employees.
The station says lead levels above a recommended threshold were found in some drinking fountains, classroom sinks, custodial sinks and other water sources. Tests also looked for copper, but no issues were found.
The district says many newer fixtures such as bottle fill stations, drinking fountains and sinks had results below the lead threshold.
More tests are being conducted to pinpoint the source of the lead. The district plans to deal with the issues before school starts in September.