Longmont Water Efficiency Rebates

Rebates available for City of Longmont residential water customers — while funds last.

Available Rebates

Weather-Based Irrigation Controller
Up to $65
  • Must be WaterSense certified
  • Must be connected to permanent in-ground irrigation system
  • Proof of purchase with model number required
Rotary / High-Efficiency Nozzles
Up to $4 each
  • Minimum of 3 nozzles required
  • Slowly deliver multiple rotating streams to reduce waste
Rain Sensor
$20 (wired) / $40 (wireless)
  • Must be connected to permanent in-ground irrigation system
  • Pauses irrigation during rainfall
Soil Moisture Sensor
Up to $60
  • Must be connected to permanent in-ground system
  • Calibrates with controller to irrigate only when moisture is depleted
Flow Sensor
Up to $130
  • Must be connected to a WaterSense irrigation controller
  • Measures water flow and sends data to controller
  • Helps detect leaks and overwatering
Drip Conversion Equipment
Up to $130
  • For converting turf zones to drip irrigation
  • Eligible: drip hose, conversion heads, emitters, hooks/clamps, risers
Spigot Timer
Up to $65
  • Must have automatic shutoff
  • Prevents overwatering from hose-end sprinklers

How to Apply

Purchase window: Year-round (submit within 45 days of purchase) · Deadline: 45 days after purchase/installation

  1. 1

    Purchase qualifying equipment from any retailer.

  2. 2

    Install the equipment at your Longmont residential service address.

  3. 3

    Submit the online rebate application within 45 days of purchase or installation.

  4. 4

    Include proof of purchase with model number.

  5. 5

    Rebates are processed on a first-come, first-served basis while funds are available.

Additional Resources

Slow the Flow — Free Sprinkler Evaluation

Longmont offers free Slow the Flow evaluations through Resource Central. After completing an evaluation, you may qualify for a $50 bonus rebate on a Wi-Fi irrigation controller (in addition to the standard rebate).

Sign Up at Resource Central

Frequently Asked Questions

How long do I have to submit a Longmont rebate application?

You must submit your rebate application within 45 days of purchase or installation. Applications are processed on a first-come, first-served basis while funds are available.

Can I combine multiple Longmont rebates?

Yes. You can apply for rebates on multiple qualifying items. Each rebate type has its own limits. For example, you could get rebates on a smart controller, rotary nozzles, and drip conversion equipment all in the same year.

Does Longmont require a Slow the Flow evaluation for rebates?

No, but it is recommended. A free Slow the Flow evaluation helps identify where upgrades will save the most water. After completing an evaluation, Longmont residents may also qualify for a $50 bonus rebate on a Wi-Fi irrigation controller.

Is Longmont currently in a drought?

As of 2026, Longmont is at a Sustainable Conservation Level — Drought Watch. While no mandatory restrictions are in place, the city strongly encourages voluntary water reduction. This makes irrigation efficiency rebates especially timely.

Ready to Get Started?

Get a free quote on irrigation installation, repair, or seasonal service. Call today or send us a message.