To find out that your city water company offer rebates for "Weather-Based Irrigation Controllers" follow this official WaterSense EPA rebates finder link:
http://www.epa.gov/watersense/rebate-finder
1) Select "Weather-Based Irrigation Controller" on the "Rebate Type" option.
2) On "State/Province" option you can select your state or province from the list.
3) Optionally you can enter your city water company name in the "Partner Name" input field.
If your city water company appears in the search results, then you may be eligible for rebates.
Click on its name to find out more about their offer.
Thank you!