In Longmont, Longmont Electric Utility provides electricity for most Longmont homes; Xcel Energy is Longmont's natural-gas utility; Longmont Water runs Longmont's water service. The exact lineup depends on your Longmont address — even nearby Boulder and Thornton answer differently.
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Colorado gives you no retail choice, so in Longmont there's nothing to shop for — your address decides who serves it. At nearly all addresses across town, electricity runs through Longmont Electric Utility. Natural gas is Xcel Energy at every sampled address. Water comes from Longmont Water, and sewer is run by the City of Longmont, the municipal government itself. In practice, getting power, gas, water, and sewer switched on can put you in front of more than one provider, not a single company.
Longmont was platted as a planned farming colony on the open plains, its street grid pointed west at Longs Peak, the mountain that handed the town half its name. St. Vrain Creek drops out of the foothills and cuts through the middle, and the city grew outward from that corridor, annexing farmland east toward the Weld County line. Service boundaries followed those annexations, which is part of why the utility reaching a given lot still tracks how and when that ground joined the city.
| Utility | Provider | Phone | Start service |
|---|---|---|---|
| ⚡ Electricity | Longmont Electric Utility | — | Look up address |
| 🔥 Natural gas | Xcel Energy | (800) 895-2999 | Provider site |
| 💧 Water | Longmont Water | — | Look up address |
| 🚽 Sewer | City of Longmont Municipal | (303) 651-8416 | Provider site |
Based on 11 sampled Longmont addresses spanning ZIP codes 80501, 80503, 80504 (2026-07-20). Yours may differ — the Longmont lookup is the tiebreaker.
The exception: at a few sampled addresses, power comes from Poudre Valley REA, Inc. rather than Longmont Electric Utility. Step outside city limits into unincorporated Boulder or Weld County, Niwot, or the Carbon Valley towns, and Longmont's utilities no longer apply — run the lookup to see what does.
The one-minute fix: run your Longmont address through the lookup and skip the guessing.
Moving into Longmont? Because power, gas, water, and sewer here can run through different providers, walk this checklist before your first St. Vrain Valley winter hits.
At nearly all of the Longmont addresses we sampled, Longmont Electric Utility was the electric utility. The exact Longmont provider depends on the address.
Generally no — Longmont electric territory is fixed by address: the utility holding your Longmont block is your utility, and at nearly all of sampled Longmont addresses that was Longmont Electric Utility — Longmont is a one-signup town.
At every one of the Longmont addresses we sampled, Longmont Water was the water provider. Other districts take over around Longmont's edges, so check your block.
No — at every one of the sampled Longmont addresses, Xcel Energy was the gas utility, but plenty of Longmont homes are all-electric and never open this account.
At nearly all addresses across Longmont, your electricity comes from Longmont Electric Utility. There's no competing plan to choose in Colorado, so the provider is set by where you live, not by shopping around. A handful of sampled addresses are served instead by Poudre Valley REA, Inc. If you want certainty for your specific place, run it through the lookup.
No. In Longmont these are two different providers. Your natural gas is Xcel Energy at every sampled address, while your electricity, at nearly all addresses, is Longmont Electric Utility. Because Colorado has no retail choice, you can't consolidate them by picking one seller — the setup is determined by your address. Plan on dealing with each provider on its own, and use the lookup first to confirm exactly who covers your home.
Water service comes from Longmont Water, and sewer is run by the City of Longmont, the municipal government itself, at every sampled address. Sewer being a city operation means it's tied to living inside Longmont's limits — a home just past the boundary can sit on a different setup entirely. Before you move, put your address through the lookup so you know which utilities actually reach that specific lot instead of assuming.
One minute with the Longmont lookup above returns your Longmont address's exact providers, phone numbers included.
Moving somewhere just outside Longmont? Providers likely differ:
Longmont-level lists can't be precise. Your Longmont address can.
Find my providersLongmont provider data comes from our address-level utility lookup engine — 11 Longmont sample addresses spread across ZIPs 80501, 80503, 80504, refreshed 2026-07-20. Individual Longmont addresses vary — check yours directly. Here's how we verify Longmont provider data.