GW and John Adams are in the South Hills area of Charleston; Andrews Heights is in the Tornado area.
Putnam Schools Superintendent Chuck Hatfield said extracurricular activities at Buffalo High will be canceled this weekend. He said the school's pipes will be flushed -- for the third time -- this weekend.
Steve Priestley, president of the Lincoln County school board, said water lines at Lincoln County High will be flushed again over the weekend, and then retested. He said school officials also conducted independent tests and those results are expected back next week.
"We're not going to use the water until we know it's absolutely safe," Priestley said.
After the leak, West Virginia American and Kanawha-Charleston Health Department officials said school taps were not being tested for MCHM but were being flushed and cleaned of possible contaminated water. However, that changed earlier this week. According to a news release from Kanawha County Schools, testing was done in schools and hospitals "to give an additional level of assurance."
Liza Cordeiro, spokeswoman for the state Department of Education, said Tomblin had directed the National Guard to conduct the tests to "confirm the water meets this more rigorous standard to provide an additional level of assurance.
"It was in an attempt to bring even further assurances to the public and to parents and to educators," Cordeiro said.
The schools news release also stressed that the testing was done as a precaution.
"Kanawha County Schools followed the proper protocol and guidelines for flushing each individual school to achieve the CDC-recommended level of 1 part per million," the release stated. "This additional testing and work is to ensure a level 100 times below the CDC-recommended level and a level [the] CDC has deemed safe for all populations."
Staff writers Lydia Nuzum and Rusty Marks contributed to this report.
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