Looking for a plumber to replace a lead water line in Los Altos, CA? Describe your project once and up to three licensed plumbers who work in Los Altos and Santa Clara County get back to you with a quote. It's free and there is no obligation.
Los Altos is home to about 30,864 people (2024 Census Bureau estimate), a shrinking community (−1.9% since 2020). With 4,719 people per sq mi, it is a densely built-up area. Homes built before the mid-1980s, and especially before 1950, are the most likely to have a lead or galvanized service line.
Los Altos at a glance
- Population (Census Bureau estimate, 2024)
- 30,864 (−1.9% since 2020)
- Rank in California
- 241st of 482 cities and towns
- Land area
- 6.5 sq mi
- Population density
- 4,719 people per sq mi (densely built-up)
- Type
- City (Los Altos city)
- Main county
- Santa Clara County
What to check before hiring in Los Altos
- 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 California, 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 Los Altos
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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 Los Altos
How much does lead line replacement cost in Los Altos, CA?
It depends on the line length and depth and on what your utility covers. Describe your home: plumbers who serve Los Altos 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 three independent licensed plumbers who serve Los Altos 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.