Annual Notifications of Service Line Material

More than 97% of customer-owned water service lines in our service area are not lead. These customers do not receive annual notifications.

Recurring Reminders

The U.S. Environmental Protection Agency mandates that water utilities send annual notifications to any address with a lead, GRR or unknown service line material until the service line is confirmed as non-lead (either through replacement or verification).

While not required, customers who do not receive notifications are welcome to use our interactive inventory map to verify the type of pipe servicing the property. 

Why Some Customers Receive a Notification

WSSC Water, in line with EPA regulations, sends annual letters to customers whose service lines are unknown, GRR or lead. 

In the fall 2024, we mailed letters to over 17,000 customers.

What We've Done Since the 2024 Letters

•  Reclassified about 3,500 previously unknown service lines as non-lead, based on updated records research. 
• 600+ customers took the survey between October 2024 and February 2025, helping us verify pipe types.
  No lead service lines were found, and a small number of GRRs were confirmed.
• Neighborhood-level verifications have begun, where we assist occupants by performing the survey for them, starting with neighborhoods with a high concentration of GRRs.

Reducing Your Exposure to Lead

Sources of Lead

Have Questions?

Please contact us at PipeType@wsscwater.com.