SONTERRA MUD Lead Service Line Inventory

SONTERRA MUD serves approximately 16,614 people in Texas. Like all U.S. water systems, it is required by federal law to maintain an inventory of lead service lines—the pipes that connect homes to the public water main—and to share that information with customers.

What we know about SONTERRA MUD's lead service lines

SONTERRA MUD has not yet completed or publicly reported a lead service line inventory. This means the utility has not disclosed how many lead, galvanized, or non-lead service lines exist in its system.

This is not unusual. Many smaller water systems across the country are still in the early stages of inventory work. Federal rules require completion, but timelines vary by system size and state oversight.

How to find SONTERRA MUD's inventory

You have two options:

Contact the utility directly. Call or email SONTERRA MUD and ask for their lead service line inventory or their latest inventory progress report. The utility can tell you whether your home has a lead service line and may share a timeline for when a full inventory will be public.

Ask about their lead reduction plan. Even without a complete inventory, SONTERRA MUD may have a plan to identify and replace lead service lines. Asking about this shows the utility you care and can prompt faster action.

If your home may have a lead service line

Lead service lines typically exist in homes built before the 1980s, though age alone does not guarantee the presence of lead pipes. The only certain way to know is to have your water tested or ask your utility.

If you're concerned about lead in your drinking water, the CDC recommends testing your tap water. A simple lead test costs $10–$50 and takes about a week. Your utility or local health department can recommend certified testing labs.

For health questions about lead exposure—especially if you have young children or are pregnant—contact your pediatrician or the CDC.

Why lead service lines matter

Lead can leach into drinking water, especially from older pipes or in homes with corrosive water. The most vulnerable populations are young children and pregnant women. Reducing exposure is a public health priority.

Federal funding is now available to help water systems replace lead service lines. You can check whether SONTERRA MUD has received funding or has a replacement schedule by contacting them directly.

Next steps for residents

• Contact SONTERRA MUD to ask about your service line material and their inventory status.
• Test your tap water if you want a baseline measurement of lead levels.
• Ask about replacement programs and any costs you might incur.
• Keep records of any testing or communications with your utility.

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

The most direct way is to contact SONTERRA MUD and ask. You can also request a water test from your utility or a certified lab—lead in the water sometimes indicates a lead service line, though not always. The utility may also send a technician to inspect the service line where it enters your home.

Is water from a lead service line safe to drink?

It depends on factors like water pH, temperature, and pipe age. Lead can leach into drinking water, but not all lead service lines result in unsafe water. Testing is the only way to know your actual lead levels. If results are high, the CDC recommends flushing the line or using a filter certified for lead.

Does SONTERRA MUD have to replace my lead service line?

Federal law requires water systems to have an inventory and a replacement plan, but rules vary by state and utility size. Some utilities replace lines at no cost to residents; others split costs. Contact SONTERRA MUD directly to ask about their policy and any available funding.

What should I do if I'm pregnant or have a young child?

Talk to your pediatrician or OB/GYN about lead exposure risk in your area. They may recommend a water test or other precautions. The CDC also has guidance on protecting young children and pregnant women from lead.