Lead Service Lines in San Diego
The City of San Diego serves about 1.4 million people. Like water systems across the United States, San Diego may have lead service lines—pipes that connect homes to the main water line under the street. Lead service lines are a potential source of lead in drinking water, especially in older homes.
What you need to know
San Diego's lead service line inventory is still being developed. The utility has not yet published a complete count of how many lead, galvanized, or unknown service lines exist in its service area. This is normal—many large water systems are still building these inventories, which can take years to complete because the information isn't always easy to access.
In the meantime, you can reduce your risk of lead exposure at home by:
- Using cold water for drinking and cooking. Hot water leaches more lead from pipes and solder.
- Flushing the line. If water has been sitting unused for more than 6 hours, run the tap until the water gets noticeably colder (usually 30 seconds to 2 minutes).
- Testing your water. San Diego may offer free or low-cost lead testing; contact the utility directly.
- Installing a certified filter. If you want extra protection, look for filters certified to remove lead (NSF/ANSI Standard 42 or 53).
Getting more information
Contact the City of San Diego's water quality team to ask about:
- Whether your home has a lead service line (some utilities can tell you based on your address and installation records)
- Free water testing programs
- Available replacement programs or financial assistance
You can also visit the EPA's guide on lead in drinking water for more details on risks and testing.
Next steps for residents
- Call or email the City of San Diego water utility to ask if your home has been identified as having a lead service line.
- If your home was built before 1980, assume the service line could be lead and follow the flushing and cold-water tips above.
- Request a free lead test through your utility if available.
- If you have young children or are pregnant, talk to your doctor or pediatrician about testing recommendations.
Key figures
| Total inventoried lines | 0 |
|---|---|
| BIL/IIJA funding received | — |
| Replacement plan status | Not reported |
| Utility's LCRR inventory | Not provided |
Frequently asked
How do I know if my house has a lead service line?
The City of San Diego may have records based on your address and when your home was built. Call the utility to ask. Homes built before 1980 are more likely to have lead service lines. A plumber can also inspect the pipe where it enters your home—lead is soft and will mark if you scrape it with a coin.
Is San Diego water safe to drink?
San Diego's drinking water meets federal safety standards. However, if your home has a lead service line, lead can leach into water inside your home. Using cold water, flushing the tap, and testing are simple ways to reduce risk.
Can I get help replacing my lead service line?
Contact the City of San Diego directly to ask about replacement programs or financial assistance. Some utilities offer rebates or low-interest loans. The availability and terms vary by service area.
What does a free water test tell me?
A lead test shows whether lead is present in your tap water and at what level. This helps you decide if you need additional action like a filter or pipe replacement. Contact San Diego's water utility to see if they offer free testing.