Annual Stormwater Fees
How are Annual Stormwater Fees determined?
SEMSWA calculates Impervious Areas and Annual Stormater Fees for ALL properties by:
- Aerial photography based impervious surface (building and hard surfaces) mapping
- Rate calculation using impervious surface square footage and current property boundaries
- Property types are sorted into taxable and non-taxable
- Fees are certified to Arapahoe County (for taxable properties), and SEMSWA invoices are sent (for tax-exempt properties).
Additional Information:
- Please see our Fee Schedule for current fee rates
- Single Family Residential properties are assigned to a fee tier and flat rate
- Non-Single Family Residential property rates are dictated by percent impervious, calculated as: Rate x Impervious Area = Fee
- If you would like a map and fee calculation report for your property please fill out a Contact Us form, or call Customer Service at 303-858-8844. Please include your street address and parcel number if available.
Basic Stormwater Fee Statistics
| 2022 Billed | Total Properties (Approximate) | Total Amount (Approximate) |
|---|---|---|
| Billed by Arapahoe County | 62,600 | $ 10,960,000 |
| Billed by SEMSWA in Arapahoe County (Tax Exempt) | 1,030 | $ 1,470,000 |
| Billed by SEMSWA in Dougas County | 70 | $ 505,000 |
For more information…
Please visit our Stormwater Fee Request and Lookup System Page
If you would like a map of your property please fill out a Contact Us form, please include your street address and parcel number.