link to the yahoo version of what is probably the same story...
the san francisco water district has switched to using chloramines, too. and if you think you're safe because your plumbing doesn't have lead pipes, think again. most plumbing fixtures contain lead. just waiting to be leached out by chloramines.
``...
By the summer of 2002, lead levels in the city's water had
reached 75 parts per billion, as measured by the EPA, five times
the level considered safe. In November that year, the EPA's
liaison to the District, Chris Ball, sent an e-mail to a
colleague about trying to alert his supervisor, Capacasa, to the
D.C. lead threat.
"Got through to Jon C on the drinking water issue," Ball wrote.
"It was news to him and he is looking into what's going on now.
He agreed that if it appears to be a real problem, fast action by
EPA would be key. . . ."
A few days later, Region III staff members prepared a memo
explaining that the spike in D.C. lead levels was a sure sign
that the water was corroding pipes and fixtures. In it, the EPA
surmised that the aqueduct's new chemical to treat bacteria,
chloramines, was a likely cause.
Chloramines "may also leave the pipe interiors more susceptible
to corrosion," the memo said. "EPA will work with the Aqueduct to
revisit corrosion control treatment options."
...''