Providing floodplain and stormwater management services since 2006.
Find what you’re looking for, quick.
![big-wave Wavy water-like element](https://www.semswa.org/wp-content/uploads/2021/05/big-wave.png)
Most Popular Pages
Permitting
For Park, Metro Dist. & HOA Maint.
Information For Businesses
- GESC Considerations for Pipe Relining Operations
- GESC Considerations for Minor Right of Way/Streetscape Construction
- GESC Considerations for Minor Commercial Construction
- Annual Bore Utility Permits
- Land Development Review Process Explained
- Permits
- Fees
- Am I in the Floodplain?
- Working in the Floodplain
- Maintaining your pond or other stormwater feature
- Grant Program
- Pollution Prevention
![Customer icon](https://www.semswa.org/wp-content/uploads/2021/05/icon-Customer.png)
Customer Service
SEMSWA strives to provide excellent service to all customers in our Service Area.
![Development icon](https://www.semswa.org/wp-content/uploads/2021/05/icon-Development.png)
Development Projects
We provide stormwater management services for land and community development in Centennial & Arapahoe County.
![Pencil icon](https://www.semswa.org/wp-content/uploads/2021/05/icon-Pencil.png)
Education & Outreach
Learn more about stormwater and our efforts to connect with our Community.
![Water icon](https://www.semswa.org/wp-content/uploads/2021/05/icon-Drop.png)
Our Work
Our Maintenance and Capital Improvement Programs conduct routine and project based work throughout our entire Service Area.
![Water Drop icon](https://www.semswa.org/wp-content/uploads/2021/05/icon-Water-Drop.png)
Water Quality
SEMSWA is an MS4 permit holder and responsible for monitoring and regulating activities that contribute to stormwater pollution.
![Home icon](https://www.semswa.org/wp-content/uploads/2021/05/icon-Home.png)
Floodplain Management
We preserve floodplain areas to minimize hazards, protect property, and have healthy drainageways.
![VacInAction Wandering stream](https://www.semswa.org/wp-content/uploads/2022/12/VacInAction.jpg)
Explore Our
Interactive Maps
![Rainwater channel](https://www.semswa.org/wp-content/uploads/2021/05/Map-Tour.jpg)
Stormwater Facilities & Maintenance Tour
Learn more about stormwater in our urban environment.
More maps coming soon!