Looking for a plumber to replace a lead water line in Leonardtown, MD? Describe your project once and up to five licensed plumbers who work in Leonardtown and St. Mary's County get back to you with a quote. It's free and there is no obligation.
Leonardtown is home to about 5,041 people (2024 Census Bureau estimate), a growing community (+11.7% since 2020). With 1,309 people per sq mi, it is a suburban area. Homes built before the mid-1980s, and especially before 1950, are the most likely to have a lead or galvanized service line.
Leonardtown at a glance
- Population (Census Bureau estimate, 2024)
- 5,041 (+11.7% since 2020)
- Rank in Maryland
- 46th of 157 cities and towns
- Land area
- 3.9 sq mi
- Population density
- 1,309 people per sq mi (suburban)
- Type
- Town (Leonardtown town)
- Main county
- St. Mary's County
What to check before hiring in Leonardtown
- Ask your utility first: it holds the service line inventory and may run a replacement program with free or shared costs.
- License and permit: in Maryland, the work is done by a licensed plumber or contractor under a permit.
- Price drivers: line length and depth, sidewalk or driveway crossings, and the connection inside the home.
- Meanwhile: follow your utility's advice and use a filter certified for lead.
Useful official resources
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EPA: lead in drinking water
Health effects and how to reduce exposure.
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EPA: lead
Federal information on lead hazards.
Services available in Leonardtown
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Lead service line replacement
Replacement of the private side of a lead or galvanized service line, coordinated with the water utility.
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Service line material check
Identification of the service line material at the meter and the entry point, for the utility inventory or a purchase.
Frequently asked questions in Leonardtown
How much does lead line replacement cost in Leonardtown, MD?
It depends on the line length and depth and on what your utility covers. Describe your home: plumbers who serve Leonardtown reply with a quote.
Will my utility replace my line?
Many utilities have programs to replace lead lines; check with yours before hiring, as they may cover all or part of the cost.
How long does it take?
A typical replacement takes a day, plus the permit and the coordination with the utility.
Which licensed plumbers will contact me?
Up to five independent licensed plumbers who serve Leonardtown and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.