Dallas school district won't test water if no complaint

The Dallas Morning News (http://bit.ly/24V976C ) reports that the district doesn't routinely test water quality, even though school officials have known for years that many campuses have old plumbing systems, some of them potentially containing lead.

There's typically problems that serve as a catalyst, he said.

Besides corrosive water, changes to water usage pattern can affect lead levels, he said.