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Lead service lines in San Antonio, TX

89 water utilities serve San Antonio, with approximately 2,198,147 people served.

Last verified from EPA SDWIS + utility inventories: 2026-04-14
Known lead
0
Galvanized
0
Unknown
0
% unknown
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Lead Service Lines in San Antonio, TX

San Antonio serves about 2.2 million people through 89 water systems. The largest is the San Antonio Water System (SAWS), which provides water to over 2.1 million residents. Other systems serve military bases, smaller municipalities, and school districts across the area.

What we know about lead in San Antonio's water

Lead enters drinking water primarily through lead service lines—pipes that connect the water main in the street to homes and buildings. These lines are most common in older neighborhoods, typically built before 1980. San Antonio does not currently have reported counts of known lead service lines or galvanized pipes in its public inventories.

This does not mean lead pipes don't exist in San Antonio; it means the data has not yet been fully compiled and made public. Federal law (the Lead and Copper Rule) requires water utilities to maintain inventories, but many systems nationwide are still completing these records.

What you can do now

Contact your water utility directly. The San Antonio Water System and other local utilities can tell you:

  • Whether your address has a lead service line
  • What material your service line is made of
  • Whether they have testing programs

You can also request your utility's lead service line inventory, which they are required to maintain under federal rules.

If your home was built before 1980 and you're concerned about lead, a licensed plumber can inspect your service line. You can also install a point-of-use water filter certified for lead (look for NSF/ANSI Standard 53).

Health and testing

Lead exposure can harm children's development. If you have young children or are pregnant, talk to your pediatrician or contact the CDC for guidance on testing and next steps. A simple water test from your utility or a certified lab can tell you if lead is present in your tap water.

Next steps for residents

  • Contact your water utility (SAWS: 210-704-7575) and ask about your service line material and any lead testing programs
  • Request your utility's lead service line inventory — they are required to have one
  • Have your water tested if your home is pre-1980 and you're concerned; your utility or a certified lab can do this
  • Consult your pediatrician if you have children and want guidance on lead exposure

Utilities serving San Antonio

Common questions

Does San Antonio have lead in the water?

Lead gets into water through lead service lines connecting homes to the water main. San Antonio does not currently publish counts of lead service lines, but they may exist in older neighborhoods. Contact your water utility to find out if your address has one.

How do I know if my house has a lead service line?

Call your water utility (San Antonio Water System at 210-704-7575 for most residents) and ask about your service line material. You can also request the utility's lead service line inventory. A licensed plumber can inspect it in person if needed.

Is lead in San Antonio tap water safe for kids?

Lead can harm children's development, especially at high levels. Talk to your pediatrician about testing your water and next steps. You can also contact the CDC for guidance on lead exposure and children's health.

Can I remove lead from my tap water?

Yes. Water filters certified for lead removal (NSF/ANSI Standard 53) can reduce it at the tap. Long-term, replacing a lead service line is the most effective solution; your utility may offer assistance programs.