LONGMONT CITY OF Lead Service Line Inventory
What you need to know
Longmont City of serves about 102,866 people in Colorado. The utility draws water primarily from surface sources.
As of now, the city has not publicly inventoried how many lead service lines exist in its system. This doesn't mean there are no lead lines—it means the utility either hasn't completed that survey yet or hasn't published the results.
Lead service lines are pipes that connect your home to the water main buried under the street. Lead doesn't dissolve in water, but it can leach into your drinking water, especially if the water is corrosive or has sat in pipes overnight. This is a real concern for infants, young children, and pregnant people.
Why this matters for your home
If your house was built before 1986, there's a reasonable chance you have a lead service line. Some homes built into the 1990s may also have them. The only way to know for sure is to ask your utility or have a plumber check the line on your property.
A lead service line poses the biggest risk at the tap where you drink, cook, or fill a baby bottle. Short-term fixes like running cold water before use or installing a point-of-use filter can reduce exposure while you decide on replacement. Long-term, the safest approach is to replace the lead line entirely—but that's a bigger conversation with your utility and a licensed plumber.
What Longmont is doing
The utility has not yet reported receiving funding under the Bipartisan Infrastructure Law to accelerate lead line replacements. You can ask Longmont directly whether they have plans to map their system and prioritize replacements, especially in neighborhoods with older housing stock.
Next steps for residents
- Contact Longmont City of and ask: "Do I have a lead service line?" They can often tell you based on your address and when your house was built.
- Get your water tested if you're concerned. A simple test costs $20–50 and tells you if lead is actually reaching your tap.
- Ask about replacement assistance. Utilities sometimes offer cost-sharing or payment plans for line replacements.
- If you have young children, talk to your pediatrician about lead exposure risk in your home.
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 I have a lead service line?
Call Longmont City of with your address—they can tell you based on your property records and when your house was built. A plumber can also do a visual inspection of the line where it enters your home. Lead lines are typically dull gray and soft enough to scratch with a coin.
Is lead in drinking water dangerous?
Yes, especially for infants, young children, and pregnant people. Lead affects brain development and learning. The CDC recommends testing your water if you're concerned, and talking to your pediatrician about your family's risk.
Can I fix a lead service line myself?
No. The entire pipe from the main to your meter typically needs to be replaced by a licensed plumber. Contact Longmont City of to ask about utility-funded replacement programs or cost-sharing.
What's a quick fix while I replace my lead line?
Run cold water for 30 seconds before drinking or cooking if water has sat in pipes overnight. Use only cold water for drinking and cooking (hot water leaches more lead). A point-of-use filter certified for lead removal is another temporary measure while you plan replacement.