Some City residents receive water service from other agencies or companies, not the City of San Diego Public Utilities Department. This map shows only addresses served by the City of San Diego Public Utilities Department. Please check with your water service provider for information on your water service line.

A service line is the water pipe that connects your home to the public water main. It conveys water from the main to the faucets, toilets and other fixtures within your house and can typically be seen in the basement or utility area where it enters your home.

The Lead and Copper Rule Revisions (LCRR) were released by the U.S. Environmental Protection Agency (EPA) in 2021 and require all utilities to complete a service line material inventory by October 2024.

The predictive model used to help identify service lines utilizes artificial intelligence and machine learning to predict the probability of a lead service line. First, information about the system is collected, such as the age of residence, when pipes were installed, historical records, water quality data, and other factors that influence the potential for lead to be present. Using this data, the predictive model is trained to understand the data and find unique patterns that may not be apparent to someone looking at the data manually. Once the model makes predictions, the predictions can be verified by conducting field investigations.

View our service line map above to find your property and the survey results. Additionally, if there is a possibility of lead in your pipes, you will receive a notification in the mail.

No, the City is providing the inspection as a free service.  

If the customer-owned service line meets the requirements for replacement, the City will work with the property owner to determine how it will be replaced.

Lead can enter drinking water when plumbing materials containing lead corrode. The rate of corrosion is based on the water chemistry. Decades of water sampling results have shown that the San Diego water chemistry does not corrode lead pipes. The City manages the water chemistry to minimize corrosion.

All lead service lines have the potential to leach lead into drinking water, but the City of San Diego carefully manages the water chemistry to prevent this from happening. Decades of sampling data and lab results prove that the City of San Diego's water chemistry does not corrode lead pipes.

Please call our Water Quality Hotline at 619-668-3232 or send an email to DrinkingWaterQuality@sandiego.gov for assistance in identifying private labs that could perform testing.