Charleston Water System prevents the corrosion of lead plumbing into water by adjusting the properties of our water. We add a corrosion inhibitor during the treatment process, which forms a molecular barrier between the pipe and the water inside.
The results of our lead testing are well below the USEPA’s limit of 15 parts per billion (ppb). Lead testing results are included in our most recent water quality report.
As an extra precaution, customers can minimize the potential for lead exposure by flushing out water that has been sitting in your home’s plumbing for several hours or more. Just let your water run for up to two minutes before using it for cooking or drinking.
Charleston Water System offers free lead tests. Testing kits are available at our office locations: 103 St. Philip St., Downtown, and 6330 Murray Drive, Hanahan, Customer Service Center.