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Lead service lines in Watertown, SD

2 water utilities serve Watertown, with approximately 27,510 people served.

Last verified from EPA SDWIS + utility inventories: 2026-04-14
Known lead
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Galvanized
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Unknown
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% unknown
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Lead service lines in Watertown, SD

Watertown's two water systems serve about 27,500 people. Neither system has reported known lead service lines in their inventories—but that doesn't mean none exist. Many older cities across the country are still discovering lead lines as they conduct detailed surveys.

What you need to know

Lead service lines are pipes made of lead that connect the water main under the street to your home. They were common in homes built before the 1980s. If water sits in a lead line overnight or longer, small amounts of lead can leach into your tap water.

The EPA and CDC recommend testing your water if your home was built before 1986, or if you don't know your service line material. A lead test costs $10–30 and takes about a week for results.

Watertown's water systems

Your water comes from one of two utilities:

  • Watertown Municipal Utilities (serves ~23,230 people)
  • Sioux Rural Water System (serves ~4,280 people)

Both are required by federal law to maintain an inventory of service line materials and to tell you what material connects your home to the main. Neither has reported confirmed lead service lines yet, but inventories are often incomplete—especially in older neighborhoods.

How to check your service line

1. Contact your water utility directly and ask about your service line material. They should have records or be able to schedule an inspection. 2. Look at your water bill or utility website for contact info and an inventory link. 3. If they can't confirm your line is lead-free, assume it could be lead or unknown material and test your water.

If you find or suspect a lead line

Do not panic. Lead exposure happens over time, and simple steps reduce risk:

  • Run your tap for 30 seconds before drinking or cooking (especially first thing in the morning).
  • Use cold water for cooking and baby formula—hot water leaches more lead.
  • Consider a certified water filter (NSF Standard 53) if you're concerned.

For health questions, contact your pediatrician or the CDC's lead information line.

Next steps for residents

  • Contact Watertown Municipal Utilities or Sioux Rural Water System and ask about your service line material
  • If it's unknown or lead, test your tap water through a certified lab
  • Ask your utility about lead line replacement programs—South Dakota may offer state or federal funding
  • If you have children under 6, discuss lead testing with your doctor

Utilities serving Watertown

Common questions

Does Watertown SD have lead in the water?

Watertown's water systems have not reported known lead service lines. However, the inventory may be incomplete. The only way to know if lead is entering your home is to test your tap water, especially if your house was built before 1986.

How do I know if I have a lead service line in Watertown?

Contact your water utility (Watertown Municipal Utilities or Sioux Rural Water System) and ask about your service line material. They should have records or be able to inspect it. If they cannot confirm it's not lead, assume it could be and test your water.

How much does a water lead test cost?

A water test typically costs $10–30 and takes about a week for results. Contact your local health department or a certified lab in South Dakota for pricing and locations.

What should I do if I have a lead service line?

Run your tap for 30 seconds before drinking, use cold water for cooking and formula, and consider a certified water filter (NSF 53). Ask your utility about lead line replacement programs and funding. For health concerns, consult your pediatrician.