Water restrictions in Longmont, CO — also called the watering schedule, outdoor irrigation rules, or drought ordinance — set which days and hours you can run sprinklers or irrigation.
As of 2026 Longmont is at a Mild Drought Response Level (Drought Watch) with no mandatory restrictions and no assigned watering days. The City recommends no more than two watering days per week and no irrigation before May 1. An updated 'waste of water' ordinance under LMC Chapter 14.04 took effect in May 2026.
Longmont's water comes from the St. Vrain Creek watershed (Ralph Price Reservoir at Button Rock Preserve), not Denver Water, so Front Range restrictions do not automatically apply. The Watering Restrictions page (longmontcolorado.gov/water/water-conservation/watering-restrictions/) confirms the 2026 status: Mild Drought Response — the City has cut municipal facility water use 10% but residents face no mandatory days/times. Recommendations: don't turn on automatic irrigation before May 1, water no more than 2 days per week, use cycle-and-soak, water early morning or late evening. The waste-of-water ordinance (LMC Chapter 14.04, updated by the City Council on April 14, 2026, effective May 2026) defines water waste to include broken sprinkler heads, leaking fixtures, and irrigation runoff onto sidewalks, streets or gutters, and authorizes the use of advanced metering data to detect underground leaks. Enforcement is graduated: written notice first, fines only if the issue is not corrected.
Under updated LMC 14.04 (effective May 2026): broken sprinklers, leaking fixtures, and runoff onto pavement are violations. The City sends a written notice and works with the customer to resolve. Continued noncompliance results in escalating municipal fines and possible water-service action. A formal mandatory restriction stage (Stage 1+) would add assigned watering days enforced under the same chapter.
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