Charleston Water System working on map to show where lead service lines are

The Post and Courier
Chloe Johnson

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A new rule on lead and copper for the U.S. drinking water system is under consideration at the Environmental Protection Agency, the first update to these standards in over 30 years. 

If finalized as expected this June, the rule will make local water utilities across the country create maps for the public to show where lead is located in underground water systems.

That has officials at Charleston Water System retracing old records that were kept for decades on small paper cards and developing a website to show where lead and copper lines are located. There are about 4,500 known lead service lines in the CWS system and 7,000 lines of unknown material.