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Lead

Water Service Line Inventory

Under the EPA’s 2021 Lead and Copper Rule Revisions (LCRR), all community water systems were required to conduct an inventory of service lines connected to the water system’s distribution system by October 16, 2024.

Through a combination of historical records review and field inspections, the Corona Utilities Department has completed its initial inventory and has determined it has no lead service lines within its distribution system. The Department has also determined there are no galvanized service lines that were once downstream of a lead service line. Therefore, no replacements are needed.

The Corona Utilities Department used approved methods by the State Water Resources Control Board to create the inventory. This included approved historical records including construction or plumbing codes, permits, installation records, and previous inspection and replacement records of service lines or meters. Along with this record review, the Department completed an inventory verification plan that was approved by the California Division of Drinking Water. This plan included visually inspecting 1,043 service lines that were representative of the system through a stratified random sampling approach. No lead or galvanized requiring replacement service lines were identified.

To view the map that provides details of our initial service line inventory, visit: https://experience.arcgis.com/experience/907d200066b24b23b0a7cb8cea7f8619/

Click here to view the Lead Service Line Inventory

Distribution System Results

While the Utilities Department has no known lead service lines, older homes (built before 1986) may have a privately-owned lead line. The Utilities Department routinely monitors for lead in the distribution system and the most recent water sample results received on September 14, 2026, showed that the 90^th percentile of all lead levels measured in the distribution system was 0.0019 mg/L. The current action level for lead in drinking water is 0.015 milligrams per liter (mg/L) or 15 micrograms per liter (µg/L).

‍The most recent water sample results do not exceed the action level of 0.015 mg/L for lead.

The City of Corona will continue to regularly test water within customers’ homes in adherence with the EPA’s Lead and Copper Rule and Rule Improvements.

‍What about my service line?

• You can help your public water system verify your service line material.
  • EPA has developed an online step-by-step guide to help people identify lead pipes in their homes called Protect Your Tap: A Quick Check for Lead. https://www.epa.gov/ground-water-and-drinking-water/protect-your-tap-quick-check-lead
  • Other organizations have also provided tools to identify service line material, such as the LSLR Collaborative https://www.lslr-collaborative.org/identifying-service-line-material.html
• Inform us immediately if you plan to alter or replace your service line because we may be required to replace the system portion.
• Please contact us immediately if you feel that we have incorrectly categorized the service line material.

Contact Chase Michelotti, Chief Distribution Operator at (951) 736-2276 or Chase.Michelotti@CoronaCA.gov to inform us if your service line has been incorrectly categorized, to share any information you may find about your service line, or to inform us of your plans to alter or replace your service line.

‍Lead Related Health Information

• Exposure to lead in drinking water can cause serious health effects in all age groups. Infants and children can have decreases in IQ and attention span. Lead exposure can cause new learning and behavior problems or exacerbate existing learning and behavior problems. The children of women who are exposed to lead before or during pregnancy can have increased risk of these adverse health effects. Adults can have increased risks of heart disease, high blood pressure, kidney or nervous system problems.
• If you have concerns about your water quality, the State Water Board’s Environmental Laboratory Accreditation Program has a map of laboratories that can test your water at the consumer’s expense, which can be found at: https://www.waterboards.ca.gov/drinking_water/certlic/labs/
• If you still have health concerns from potential lead exposure in your drinking water, there are point-of-use (POU) devices that can be used on your drinking water taps to provide an additional barrier of protection. A list of these residential treatment devices can be found at: https://www.waterboards.ca.gov/drinking_water/certlic/device/watertreatmentdevices.html
• If you have other health issues concerning the consumption of this water, you may wish to consult your health care provider.

Additional Resources

To verify the material of an unknown service line or for any other information, contact Chase Michelotti at (951) 736-2276 or Chase.Michelotti@CoronaCA.gov and/or visit https://www.CoronaCA.gov/lead.