The Lansing School District has flushed water lines, changed some plumbing fixtures and removed others after recent testing showed elevated levels of lead in water samples from five of its buildings.
In a statement, Superintendent Yvonne Caamal Canul says the district took "minor action in a few very limited locations, but children were never in danger."
Caamal Canul says all sites "came back clean" in subsequent tests.
Testing was prompted by the crisis with lead-tainted water in Flint.
Teresa Szymanski, the district's operations director, tells the Lansing State Journal the district removed 11 fountains and replaced three.
The Lansing Board of Water and Light says there are no lead service lines leading into school buildings.
Lead can leach into water, however, at fixtures or pipes joined by lead solder.