LeadPipeLookup

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Lead service lines in San Jose, CA

96 water utilities serve San Jose, with approximately 3,401,514 people served.

Last verified from EPA SDWIS + utility inventories: 2026-04-14
Known lead
0
Galvanized
0
Unknown
0
% unknown
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Lead Service Lines in San Jose, CA

San Jose's water system serves over 3.4 million people across 96 different water systems. While lead service lines—pipes that connect homes to the main water line—pose a genuine health concern, the good news is that your utility can tell you whether yours exists.

What you need to know

Lead pipes can leach lead into drinking water, especially in homes built before the 1980s. Lead exposure is particularly risky for young children and pregnant people. However, not every old home has a lead service line, and even if yours does, simple steps (like running the tap before drinking) can reduce exposure.

California requires water utilities to maintain inventories of lead service lines in their systems. This means your water company should have records about whether your home has one—or is actively trying to find out.

San Jose's largest water providers

San Jose Water, which serves nearly 1 million people, is the largest utility in the area. Other major providers include California Water Service (Bakersfield and Stockton divisions) and the City of Bakersfield. None of these systems have reported confirmed lead service lines in their current inventories, though many utilities are still mapping their systems to improve their records.

Important note: "No confirmed lead service lines" doesn't necessarily mean there are none—it often means the utility hasn't finished its investigation or records from decades ago are incomplete.

What to do now

Contact your water utility directly. They can tell you:

  • Whether your address has a known or suspected lead service line
  • What testing options are available
  • What they recommend for your specific situation

If you're concerned about lead in your water, the CDC recommends testing. Your utility can explain the process and may offer free or subsidized testing kits.

Next steps for residents

  • Find your water provider: Check your water bill or visit your city's website to identify which utility serves your address (it may not be San Jose Water)
  • Contact them about your service line: Call or visit their website to request information about your home's pipes
  • Ask about testing: If you're concerned, ask whether your utility offers free lead testing or can recommend a certified lab
  • Learn more: Visit the EPA's lead in drinking water page for additional resources and health information

Utilities serving San Jose

Common questions

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

Your water utility maintains records of service line materials. Contact them with your address, and they can tell you whether your line is lead, copper, galvanized steel, or unknown. If it's unknown, they may send someone to inspect it.

Is lead in water really dangerous?

Yes—lead exposure can harm brain development in young children and cause other serious health effects. For specific health concerns, talk to your pediatrician or call the CDC's lead hotline.

Can I fix a lead service line myself?

No. Replacing a service line requires licensed plumbers and coordination with your utility. Your water company can connect you with approved contractors and may offer financial assistance.

What should I do right now if I'm worried about lead?

Start by contacting your water utility to find out if your service line is lead. If you want to test your water, ask them about free or low-cost testing options in your area.