Lead Service Lines in San Diego, CA

What we know about lead service lines in San Diego

San Diego's 66 water systems serve about 1.6 million people. Based on available inventory data, no lead service lines have been confirmed in the systems we've surveyed.

That said, "no confirmed" doesn't mean "none exist." California requires water utilities to inventory their service lines, but many systems—especially smaller ones—are still completing those inventories. If your utility hasn't finished its survey, the absence of a report doesn't guarantee your home is lead-free.

The City of San Diego's lead service line data

The City of San Diego supplies water to about 1.4 million residents and is the largest utility in the region. Like all California water systems, it is required to maintain and update a service line inventory. You can contact the utility directly to ask whether your specific address has been surveyed and what material your service line is made from.

Smaller systems serving military installations, border stations, and rural areas (like Pine Valley Border Patrol Station and NAS North Island) are also required to track their infrastructure, though their inventories may be less complete.

What should you do if you're concerned about lead?

If your home was built before the 1970s, you have a higher statistical risk of having a lead or galvanized steel service line. The only way to know for sure is to contact your water utility and ask about your address.

If you want to get your water tested, the EPA recommends flushing your tap and collecting a sample from the cold water line. Many California health departments offer free or low-cost lead testing. Results typically come back within 1–2 weeks.

For health concerns—especially if there are children or pregnant people in your home—talk to your doctor or pediatrician. The CDC offers guidance on reducing lead exposure at home.

Next steps for residents

• Find your utility. Search your address at the California Water Boards service locator to confirm which system serves you.
• Request your service line inventory. Call your utility directly and ask whether your address has been surveyed and what your service line material is.
• Get your water tested. Contact your local health department for a free or low-cost lead test kit.
• Ask about treatment options. If you're concerned, your utility can discuss corrosion control measures or point you to certified plumbers who can install point-of-use filters or replace service lines.

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```json [ { "q": "Does San Diego have lead service lines?", "a": "No lead service lines have been confirmed in San Diego's 66 water systems based on current inventory data. However, inventories are still being completed by some utilities, so the absence of a report doesn't guarantee none exist. Contact your specific water utility to check your address." }, { "q": "How do I know if my house has a lead service line?", "a": "Call your water utility and ask if your address has been surveyed. You can also hire a plumber to visually inspect the line where it enters your home, or request a lead water test from your health department. Homes built before 1970 have higher risk." }, { "q": "Is San Diego tap water safe to drink?", "a": "San Diego's tap water meets federal and state safety standards. However, if your home has a lead service line or older plumbing, lead can leach into your water at the home level. Testing your specific tap water is the only way to know what you're exposed to." }, { "q": "What should I do if I'm worried about lead in my water?", "a": "Contact your water utility to find out your service line material. Get a free or low-cost lead test from your local health department. Talk to your doctor if you have health concerns, especially if children or pregnant people live in your home." }