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LCRR utility compliance status in Colorado

How are Colorado water utilities doing on EPA LCRR compliance?

Last verified from EPA SDWIS: 2026-04-14
Water systems
2,241
Known lead
0
Unknown
0
BIL funding
$0M

Lead Service Line Compliance in Colorado Water Systems

What Colorado utilities reported in October 2024

Colorado's 2,241 water systems serve nearly 7.5 million people. In their October 2024 Lead and Copper Rule Revision (LCRR) inventory submissions to the EPA, Colorado utilities reported zero known lead service lines across the entire state.

The state also reported zero service lines classified as unknown — meaning utilities indicated they had either completed their inventories with definitive information, or had no reason to believe unknown lines existed in their service areas.

This stands out: most states have substantial numbers of unknown lines, which reflects incomplete historical records or ongoing inventory work. Colorado's reporting suggests either comprehensive documentation, very limited historical use of lead service lines, or a combination of both.

What this means for residents

A "zero unknown" inventory doesn't automatically mean your home is lead-free. It means your local utility has classified every service line in its records as either lead or non-lead based on available evidence—installation records, previous testing, material documentation, or field inspection.

If you live in a Colorado home built before 1986, or you're unsure about your service line material, the EPA and CDC recommend:

  • Contact your water utility and ask directly about your service line.
  • Request a free or low-cost test if your utility offers one.
  • Use a lead filter on your tap water while awaiting results or confirmation, if you're concerned.

Enforcement and oversight

Colorado's Division of Reclamation, Mining and Safety (DRMS) — the state primacy agency for drinking water — oversees compliance with federal LCRR rules. Utilities that fail to submit inventories or meet compliance deadlines can face enforcement actions, though specific current cases are not listed here. For the latest enforcement actions or compliance updates, contact DRMS directly or check the Colorado Department of Natural Resources website.

Next steps for residents

  • Contact your water utility with your address and ask: Is my service line lead, non-lead, or unknown?
  • Request documentation if they say it's non-lead—ask what evidence they used (records, inspection, etc.).
  • Get your water tested for lead if your utility can't confirm the service line material. Many utilities offer this free or cheap.
  • Use a NSF-certified lead filter on your kitchen tap while waiting for answers, especially if anyone in your home is pregnant, nursing, or under 6 years old.

Related topics in Colorado

Common questions

Does Colorado have lead service lines?

Colorado utilities reported zero known lead service lines in their October 2024 inventory. However, some older homes may still have unknown or misclassified lines. Contact your utility to confirm your service line material.

How do I find out if my house has a lead service line in Colorado?

Call your water utility with your address and ask directly. They can tell you based on installation records or prior inspections. If they can't confirm, request a free or low-cost test.

What should I do if I'm worried about lead in my tap water?

Use an NSF-certified lead filter on your kitchen tap, let cold water run for 30 seconds before drinking, and have your water tested. Contact your utility for free testing programs. For health concerns, speak with your doctor or call the CDC.

Who regulates water safety in Colorado?

Colorado's Division of Reclamation, Mining and Safety oversees drinking water compliance, including lead service line inventories and EPA rules. You can contact them for enforcement updates or utility complaints.