Lead Service Lines in Mesa, Arizona
What you need to know about your water system
The City of Mesa serves approximately 466,000 people across the Arizona area. Like many older water systems in the United States, Mesa's pipes may include lead service lines—the pipes that connect the public water main to individual homes.
Lead service lines are a common legacy of 20th-century water infrastructure. While modern plumbing codes prohibit lead, older lines installed before the 1980s can leach lead into drinking water, especially when water is corrosive or sits in pipes for hours.
Where Mesa stands on lead inventories
As of the information available, Mesa has not yet completed a comprehensive inventory of lead service lines across its system. The EPA requires all water utilities to identify and map lead service lines, with inventories due by October 2024. Mesa is working to meet these requirements and should have clearer information about the scope and location of lead service lines in the coming months.
When the utility completes its inventory, it will show:
- How many lead service lines are confirmed in the system
- Which lines are galvanized (steel pipes that can corrode and release lead)
- Which lines are definitively non-lead
- How many lines remain unknown
What this means for your home
If your home was built before the 1990s, there's a chance your service line contains lead. The only way to know for certain is to:
- Contact Mesa directly and ask if your address has a known lead service line
- Have your water tested (the utility or a certified lab can do this)
- Have a licensed plumber inspect your line if you want visual confirmation
If lead is detected in your water, the most effective solution is replacing the service line. In the meantime, you can reduce exposure by flushing your tap for 30 seconds before drinking, using cold water for cooking and drinking, and installing a point-of-use filter certified for lead removal.
Next steps for residents
- Contact Mesa City of Water Services to ask whether a lead service line has been identified at your address
- Check the EPA's guidance on lead in drinking water and testing options
- Ask about replacement programs—many utilities now offer grants or assistance for removing lead service lines
- Have your water tested if you're concerned, especially if you have young children or pregnant household members
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 in Mesa has a lead service line?
Contact Mesa City of Water Services with your address to ask if they've identified lead on your property. You can also have your water tested by a certified lab, or hire a plumber to inspect the line physically. The city is completing its lead service line inventory.
Is lead in Mesa water dangerous?
Lead can be harmful, especially to children and pregnant people. For health concerns, talk to your doctor or call the CDC. You can reduce exposure by flushing your tap, using cold water for drinking and cooking, and installing a certified lead-removal filter.
How much does it cost to replace a lead service line in Arizona?
Replacement costs vary (typically $2,000–$5,000 or more), but Mesa and other Arizona utilities may offer grants or assistance programs. Contact your utility to ask about rebates or funding before getting quotes from contractors.
When will Mesa finish mapping all lead service lines?
The EPA deadline for water utilities to complete lead service line inventories is October 2024. Check back with Mesa City of Water Services for updates on their inventory status and results.