Contact Us
Please contact us for stormwater drainage, infrastructure, flooding, or water quality needs.
BILLING NOTICE: If your request is Annual Stormwater Fee related, please use our fee-dedicated web page and form for self-service and expedited response.
SEASONAL NOTICE: Spring is our wet season, please report any stormwater drainage issues using the contact form below. For mosquito control, please contact the City of Centennial Public Works Department or Arapahoe County Open Spaces, depending on where you live.
City of Centennial:
Information: Mosquito Control webpage
Contact Link: City of Centennial Report a Problem page
303-325-8000
OR
Arapahoe County Open Spaces Department:
Information: Mosquito Control webpage
Contact Link: askopenspaces@arapahoegov.com
720-874-6540
CONTACT SEMSWA FORM:
SEMSWA OFFICE LOCATION:
Business Hours: 8:00 am – 4:30 pm Monday thru Friday
Email: semswamain@semswa.org