If you're a customer of Erie Water Works, chances are, you received a notice in the mail about levels of aluminum that tested above the safe standard for drinking water.

The letter comes from the department of environmental protection bureau of safe drinking water. On September 20th, water tested at .31 milligrams per liter, and the standard is .20. According to Erie Water Works, the levels come from poly aluminum chloride - an anti-coagulant used in the treatment process. They reduced that and say levels began to come down. It should all be resolved within a month. They say it's not health threatening, and customers don't need to drink bottled water, but if you have specific health concerns, contact your doctor.