Is lead in my Maryland tap water a health emergency?

Lead in drinking water is a serious health concern, especially for children and pregnant people, but it is preventable. If you are concerned about exposure, contact your pediatrician or the CDC's lead hotline (1-800-232-4636) for guidance on testing and next steps.

How do I know if my house has a lead service line?

Your water utility is required to tell you. Contact them and ask what material your service line is made of. If they don't know, ask about their investigation plan or request a lead test of your tap water.

Can I get my lead service line replaced?

Yes, but cost and availability vary by utility. Ask your water provider about replacement programs, financial assistance, or rebates. Some Maryland utilities offer partial or full funding for LSL replacement.

What should I do if my water utility hasn't responded to my inventory question?

Document your request and follow up in writing. If they continue to ignore you, file a complaint with the Maryland Department of the Environment (MDE), which enforces federal water safety rules.

Lead Service Line Compliance in Maryland Water Systems

Maryland's water utilities are in the early stages of the EPA's Lead and Copper Rule Revisions (LCRR), which requires all community water systems to complete a lead service line (LSL) inventory by October 16, 2024, and submit it to the state.

What the October 2024 inventory deadline means

The LCRR is a federal rule designed to protect public health by requiring water systems to identify and track lead service lines—pipes that connect the water main to homes and buildings. Maryland's primacy agency, the Maryland Department of the Environment (MDE), oversees compliance for the state's 3,167 water systems, which collectively serve about 6 million residents.

By October 2024, all community water systems in Maryland were required to submit their initial LSL inventory to MDE. This inventory captures three categories of pipes: those confirmed to contain lead, those confirmed to be lead-free, and those whose status is unknown.

Inventory status and unknown service lines

The LCRR recognizes that many utilities cannot immediately determine the material of every service line—particularly for older systems where records are incomplete or pipes are buried underground. The rule allows systems to classify lines as "unknown" temporarily while they conduct further investigation through water testing, customer surveys, and physical inspections.

Unknown service lines are not ignored. The rule requires utilities to develop a plan to resolve their unknown status over time, prioritizing areas where lead risk is highest.

Compliance and enforcement

Water utilities in Maryland that failed to meet the October 2024 deadline or did not submit an inventory face potential enforcement action from MDE. The state has authority to issue citations and require corrective action plans.

If you want to know your specific utility's compliance status, MDE publishes compliance reports and inventory data. You can also contact your local water utility directly—they are required by federal law to inform customers about their LSL inventory and any known or suspected lead service lines serving their property.

Next steps for residents

Contact your water utility and ask whether your service line has been inventoried and what material it is made of.
Request a lead test if your utility cannot confirm your line is lead-free; many utilities offer free or low-cost testing.
Ask about replacement programs: If you have an LSL, ask whether your utility offers financial assistance or a replacement timeline.
Visit MDE's Lead and Copper Rule page for the most current state compliance information and utility contact details.

LCRR utility compliance status in Maryland